EXHIBIT 1










                          AGREEMENT AND PLAN OF MERGER

                                  BY AND AMONG

                              THERATX, INCORPORATED

                            ATLANTA ACQUISITION CORP.

                                       AND

                            HELIAN HEALTH GROUP, INC.


                           DATED AS OF AUGUST 29, 1995







                                TABLE OF CONTENTS
                                                                            Page
                                    CONTENTS
Preamble...................................................................    1
ARTICLE 1 - TRANSACTIONS AND TERMS OF MERGER...............................    1
     1.1    Merger.........................................................    1
     1.2    Time and Place of Closing......................................    1
     1.3    Effective Time.................................................    1
     1.4    Execution of Stock Option Agreement............................    2
     1.5    Stockholders' Agreements.......................................    2
ARTICLE 2 - TERMS OF MERGER................................................    2
     2.1    Charter........................................................    2
     2.2    Bylaws.........................................................    2
     2.3    Directors and Officers.........................................    2
ARTICLE 3 - MANNER OF CONVERTING SHARES....................................    2
     3.1    Conversion of Shares...........................................    2
     3.2    Anti-Dilution Provisions.......................................    3
     3.3    Shares Held by Helian or TheraTx...............................    3
     3.4    Fractional Shares..............................................    3
     3.5    Conversion of Rights; Restricted Stock.........................    4
ARTICLE 4 - EXCHANGE OF SHARES.............................................    5
     4.1    Exchange Procedures............................................    5
     4.2    Rights of Former Helian Stockholders...........................    5
ARTICLE 5 - REPRESENTATIONS AND WARRANTIES OF HELIAN.......................    5
     5.1    Organization, Standing, and Power..............................    5
     5.2    Authority; No Breach By Agreement..............................    6
     5.3    Capital Stock..................................................    6
     5.4    Helian Subsidiaries............................................    7
     5.5    SEC Filings; Financial Statements..............................    7
     5.6    Absence of Certain Changes or Events...........................    8
     5.7    No Liabilities as Guarantor....................................    8
     5.8    Tax Matters....................................................    8
     5.9    Assets.........................................................    9
     5.10   Intellectual Property..........................................    9
     5.11   Environmental Matters..........................................    9
     5.12   Compliance With Laws...........................................   10
     5.13   Labor Relations................................................   10
     5.14   Employee Benefit Plans.........................................   11
     5.15   Material Contracts.............................................   12
     5.16   Legal Proceedings..............................................   13
     5.17   Reports........................................................   13
     5.18   Statements True and Correct....................................   13
     5.19   Accounting, Tax and Regulatory Matters.........................   13
     5.20   State Takeover Laws............................................   13
     5.21   Charter Provisions.............................................   13
ARTICLE 6 - REPRESENTATIONS AND WARRANTIES OF THERATX......................   14
     6.1    Organization, Standing, and Power..............................   14
     6.2    Authority; No Breach By Agreement..............................   14
     6.3    Capital Stock..................................................   15
     6.4    SEC Filings; Financial Statements..............................   15

                                      -i-



     6.5    Absence of Certain Changes or Events...........................   15
     6.6    Tax Matters....................................................   15
     6.7    Assets.........................................................   16
     6.8    Intellectual Property..........................................   16
     6.9    Environmental Matters..........................................   17
     6.10   Compliance With Laws...........................................   17
     6.11   Labor Relations................................................   18
     6.12   Employee Benefit Plans.........................................   18
     6.13   Material Contracts.............................................   19
     6.14   Legal Proceedings..............................................   19
     6.15   Reports........................................................   19
     6.16   Statements True and Correct....................................   20
     6.17   Authority of Merger Sub........................................   20
     6.18   Accounting, Tax and Regulatory Matters.........................   20
ARTICLE 7 - CONDUCT OF BUSINESS PENDING CONSUMMATION.......................   20
     7.1    Affirmative Covenants of Helian................................   20
     7.2    Negative Covenants of Helian...................................   21
     7.3    Covenants of TheraTx...........................................   22
     7.4    Adverse Changes in Condition...................................   22
     7.5    Reports........................................................   22
ARTICLE 8 - ADDITIONAL AGREEMENTS..........................................   23
     8.1    Registration Statement; Proxy Statement; Stockholder Approval..   23
     8.2    Exchange Listing...............................................   23
     8.3    Applications; Antitrust Notification...........................   23
     8.4    Filings with State Offices.....................................   23
     8.5    Agreement as to Efforts to Consummate..........................   23
     8.6    Investigation and Confidentiality..............................   24
     8.7    Press Releases.................................................   24
     8.8    Certain Actions................................................   24
     8.9    Accounting and Tax Treatment...................................   24
     8.10   State Takeover Laws............................................   25
     8.11   Charter Provisions.............................................   25
     8.12   Agreements of Affiliates.......................................   25
     8.13   Employee Benefits and Contracts................................   25
     8.14   Indemnification................................................   25
     8.15   Stock Plans....................................................   26
ARTICLE 9 - CONDITIONS PRECEDENT TO OBLIGATIONS TO CONSUMMATE..............   27
     9.1    Conditions to Obligations of Each Party........................   27
     9.2    Conditions to Obligations of TheraTx...........................   28
     9.3    Conditions to Obligations of Helian............................   29
ARTICLE 10 - TERMINATION...................................................   30
     10.1   Termination....................................................   30
     10.2   Effect of Termination..........................................   31
     10.3   Non-Survival of Representations and Covenants..................   31
ARTICLE 11 - MISCELLANEOUS.................................................   31
     11.1   Definitions....................................................   31
     11.2   Expenses.......................................................   37
     11.3   Brokers and Finders............................................   38
     11.4   Entire Agreement...............................................   38
     11.5   Amendments.....................................................   38
     11.6   Waivers........................................................   38

                                      -ii-


     11.7   Assignment.....................................................   39
     11.8   Notices........................................................   39
     11.9   Governing Law..................................................   39
     11.10 Counterparts....................................................   39
     11.11 Captions........................................................   39
     11.12 Interpretations.................................................   40
     11.13 Enforcement of Agreement........................................   40
     11.14 Severability....................................................   40
Signatures.................................................................   40


                                     -iii-






                          AGREEMENT AND PLAN OF MERGER


              THIS AGREEMENT AND PLAN OF MERGER (this  "Agreement")  is made and
entered  into as of August 29,  1995,  by and among Helian  Health  Group,  Inc.
("Helian"),  a Delaware  corporation  having  its  principal  office  located in
Monterey,  California;  Atlanta  Acquisition  Corp.  ("Merger  Sub"), a Delaware
corporation  having its  principal  office  located  in  Atlanta,  Georgia;  and
TheraTx,  Incorporated ("TheraTx"),  a Delaware corporation having its principal
office located in Atlanta, Georgia.


                                    PREAMBLE

              The Boards of Directors  of Helian,  Merger Sub and TheraTx are of
the opinion that the transactions  described herein are in the best interests of
the parties and their respective  stockholders.  This Agreement provides for the
acquisition  of Helian by TheraTx  pursuant to the merger of Merger Sub with and
into Helian. At the effective time of such merger, the outstanding shares of the
capital stock of Helian shall be converted  into the right to receive  shares of
the  common  stock  of  TheraTx  (except  as  provided  herein).  As  a  result,
stockholders  of Helian  shall become  stockholders  of TheraTx and Helian shall
continue to conduct its business and operations as a wholly owned  subsidiary of
TheraTx.  The  transactions  described  in this  Agreement  are  subject  to the
approvals of the  stockholders  of Helian,  expiration of the mandatory  waiting
period  under the HSR Act,  and the  satisfaction  of certain  other  conditions
described  in  this  Agreement.  It is the  intention  of the  parties  to  this
Agreement  that the Merger for federal  income tax purposes  shall  qualify as a
"reorganization"  within the meaning of Section  368(a) of the Internal  Revenue
Code,  and for  accounting  purposes shall qualify for treatment as a pooling of
interests.

              After execution and delivery of this Agreement, as a condition and
inducement to TheraTx's  willingness  to enter into this  Agreement,  Helian and
TheraTx are entering into a stock option agreement as provided herein.

              Certain  terms used in this  Agreement are defined in Section 11.1
of this Agreement.

              NOW,  THEREFORE,  in  consideration  of the above  and the  mutual
warranties,  representations,  covenants and  agreements  set forth herein,  the
parties agree as follows:


                                    ARTICLE 1
                        TRANSACTIONS AND TERMS OF MERGER

              1.1 MERGER. Subject to the terms and conditions of this Agreement,
at the  Effective  Time,  Merger  Sub  shall be merged  with and into  Helian in
accordance  with the  provisions  of Section 251 of the DGCL and with the effect
provided  in  Section  259 of the  DGCL  (the  "Merger").  Helian  shall  be the
Surviving  Corporation resulting from the Merger and shall become a wholly owned
Subsidiary of TheraTx and shall continue to be governed by the Laws of the State
of  Delaware.  The Merger  shall be  consummated  pursuant  to the terms of this
Agreement,  which has been  approved  and  adopted by the  respective  Boards of
Directors  of Helian,  Merger Sub and  TheraTx  and by the sole  stockholder  of
Merger Sub.

              1.2 TIME AND PLACE OF CLOSING. The Closing will take place at 9:00
A.M. on the date that the Effective  Time occurs (or the  immediately  preceding
day if the Effective  Time is earlier than 9:00 A.M.),  or at such other time as
the Parties,  acting through their chief executive officers, may mutually agree.
The place of Closing shall be at Alston & Bird, One Atlantic Center, 1201 Helian
Peachtree Street,  Atlanta,  Georgia  30309-3424,  or such other place as may be
mutually agreed upon by the Parties.

              1.3 EFFECTIVE TIME. The Merger and other transactions contemplated
by this  Agreement  shall  become  effective  on the  date  and at the  time the
Certificate  of Merger  reflecting  the Merger shall become  effective  
-10-



with the  Secretary of State of the State of Delaware  (the  "Effective  Time").
Subject to the terms and conditions  hereof,  unless  otherwise  mutually agreed
upon in writing by the chief executive officers of each Party, the Parties shall
use their  reasonable  efforts to cause the Effective Time to occur on the first
business day following the last to occur of (i) the  effective  date  (including
expiration of any applicable waiting period) of the last required Consent of any
Regulatory  Authority  having  authority  over and  approving or  exempting  the
Merger,  and (ii) the date on which  the  stockholders  of Helian  approve  this
Agreement to the extent such approval is required by applicable Law.

              1.4  EXECUTION OF STOCK OPTION  AGREEMENT.  Immediately  following
execution of this Agreement,  Helian will execute and deliver to TheraTx a stock
option agreement (the "Stock Option  Agreement"),  in substantially  the form of
Exhibit 1.

              1.5 STOCKHOLDERS' AGREEMENTS.  Immediately following execution and
delivery  of the  Stock  Option  Agreement,  each  of the  directors  of  Helian
beneficially  owning more than 3% of the  outstanding  Helian Common Stock,  and
each  corporation,  partnership  or other entity  holding shares over which such
director  has or shares  discretionary  dispositive  or voting  authority,  will
execute and deliver to TheraTx a Stockholder  Agreement,  in  substantially  the
form of Exhibit 2.


                                    ARTICLE 2
                                 TERMS OF MERGER

              2.1 CHARTER.  The Certificate of Incorporation of Helian in effect
immediately prior to the Effective Time shall be amended and restated, effective
at the Effective Time, in a manner  satisfactory to TheraTx.  The Certificate of
Incorporation of Helian, as so amended and restated, shall be the Certificate of
Incorporation of the Surviving Corporation until otherwise amended or repealed.

              2.2 BYLAWS. The Bylaws of Merger Corp. in effect immediately prior
to the  Effective  Time shall be the Bylaws of the Surviving  Corporation  until
otherwise amended or repealed.

              2.3 DIRECTORS AND OFFICERS.  Each of the directors and officers of
Helian shall submit a written  resignation,  in form and substance acceptable to
TheraTx, effective as of the Effective Time.


                                    ARTICLE 3
                           MANNER OF CONVERTING SHARES

              3.1  CONVERSION  OF  SHARES.  Subject  to the  provisions  of this
Article 3, at the Effective Time, by virtue of the Merger and without any action
on the part of TheraTx,  Helian,  Merger Sub or the  stockholders  of any of the
foregoing,  the shares of the  constituent  corporations  shall be  converted as
follows:

                  (a)  Each  share  of  TheraTx  Capital  Stock,  including  any
       associated  TheraTx Rights,  issued and outstanding  immediately prior to
       the Effective Time shall remain issued and outstanding from and after the
       Effective Time.

                  (b)  Each  share  of  Merger  Sub  Common   Stock  issued  and
       outstanding at the Effective Time shall cease to be outstanding and shall
       be converted into one share of Helian Common Stock.

                  (c) Each share of Helian Common Stock  (excluding  shares held
       by any Helian Company or any TheraTx Company,  in each case other than in
       a  fiduciary  capacity  or as a result  of debts  previously  contracted)
       issued  and   outstanding  at  the  Effective  Time  shall  cease  to  be
       outstanding  and shall be converted  into and  exchanged for the right to
       receive that multiple of a share of TheraTx  Common Stock (the  "Exchange
       Ratio") obtained in accordance with the following:

                                      -2-


                           (i) if the Base Period Trading Price (defined to mean
              the  average  of the daily  last  sale  prices  for the  shares of
              TheraTx Common Stock for the ten (10) consecutive  trading days on
              which  such  shares  are  actually   traded  as   over-the-counter
              securities and quoted on the Nasdaq  National  Market (as reported
              by The Wall Street Journal or, if not reported thereby,  any other
              authoritative  source) ending at the close of trading on the fifth
              trading day  immediately  preceding  the date of the  Shareholders
              Meeting (the "Measurement Period") is $16.00 (the "Maximum Price")
              or greater,  then the Exchange Ratio shall be 0.4063 (the "Minimum
              Exchange Ratio");

                           (ii) if the Base Period  Trading Price is $10.00 (the
              "Minimum  Price") or less, then the Exchange Ratio shall be 0.4809
              (the "Maximum Exchange Ratio");

                           (iii) if the Base  Period  Trading  Price is  greater
              than or equal to $12.00 (the "Lower Intermediate  Price") and less
              than or equal to $13.375 (the "Upper  Intermediate  Price"),  then
              the  Exchange  Ratio shall be 0.4486 (the  "Intermediate  Exchange
              Ratio"); and

                           (iv) if the  Base  Period  Trading  Price is (x) less
              than the  Maximum  Price but greater  than the Upper  Intermediate
              Price or (y) less than the Lower  Intermediate  Price but  greater
              than  the  Minimum  Price,   then  the  Exchange  Ratio  shall  be
              determined in accordance with the procedures  described in Exhibit
              6.

       Pursuant to the TheraTx  Rights  Agreement,  each share of TheraTx Common
       Stock  issued in  connection  with the Merger upon  conversion  of Helian
       Common Stock shall be accompanied by a TheraTx Right.

              3.2  ANTI-DILUTION  PROVISIONS.  In the event  Helian  changes the
number of shares of Helian  Common  Stock  issued and  outstanding  prior to the
Effective  Time as a  result  of a  stock  split,  stock  dividend,  or  similar
recapitalization with respect to such stock and the record date therefor (in the
case of a stock  dividend) or the effective date thereof (in the case of a stock
split or similar  recapitalization  for which a record date is not  established)
shall be prior to the Effective  Time,  the Exchange Ratio and the amount of the
Cash Payment (as appropriate)  shall be proportionately  adjusted.  In the event
TheraTx  changes  the  number of shares  of  TheraTx  Common  Stock  issued  and
outstanding  prior to the  Effective  Time as a result of a stock  split,  stock
dividend, or similar  recapitalization with respect to such stock and the record
date therefor (in the case of a stock  dividend) or the  effective  date thereof
(in the case of a stock  split or  similar  recapitalization  for which a record
date is not established) shall be (a) prior to the expiration of the Measurement
Period,  (i) the Minimum Exchange Ratio, the Maximum Exchange Ratio, the Minimum
Price, the Maximum Price,  each Reference Price,  each Reference  Exchange Ratio
and (except as provided in clause (ii) below) the Base Period  Trading Price (as
used in the  formulae  set  forth in  Section  3.1(c)  and  Exhibit  6) shall be
proportionately adjusted to reflect the market effect of such stock split, stock
dividend, or similar  recapitalization,  and (ii) if necessary,  the Measurement
Period and the anticipated  Effective Time shall be postponed for an appropriate
period of time agreed  upon by the parties in order for the Base Period  Trading
Price to reflect  the market  effect of such stock  split,  stock  dividend,  or
similar recapitalization, and (b) after expiration of the Measurement Period and
prior to the  Effective  Time,  the  Exchange  Ratio  shall  be  proportionately
adjusted to reflect the market effect of such stock split,  stock  dividend,  or
similar recapitalization.

              3.3 SHARES HELD BY HELIAN OR THERATX. Each of the shares of Helian
Common Stock held by any Helian Company or by any TheraTx Company,  in each case
other than as a result of debts  previously  contracted,  shall be canceled  and
retired at the Effective Time and no  consideration  shall be issued in exchange
therefor.

              3.4 FRACTIONAL SHARES. Notwithstanding any other provision of this
Agreement,  each holder of shares of Helian Common Stock  exchanged  pursuant to
the Merger who would  otherwise  have been  entitled  to receive a fraction of a
share of TheraTx  Common  Stock  (after  taking into  account  all  certificates
delivered  by such  holder)  shall  receive,  in  lieu  thereof,  cash  (without
interest)  in an  amount  equal to such  fractional  part of a share of  TheraTx
Common Stock multiplied by the market value of one share of TheraTx Common Stock
at the Effective

                                      -3-



Time.  The market value of one share of TheraTx  Common  Stock at the  Effective
Time shall be the last sale price of such  common  stock on the Nasdaq  National
Market (as reported by The Wall Street Journal or, if not reported thereby,  any
other  authoritative  source) on the last trading day  preceding  the  Effective
Time. No such holder will be entitled to dividends,  voting rights, or any other
rights as a stockholder in respect of any fractional shares.

              3.5   CONVERSION OF RIGHTS; RESTRICTED STOCK.

                    (a) At the  Effective  Time,  each  option or other Right to
purchase  shares of Helian  Common  Stock  pursuant  to stock  options  or stock
appreciation  rights ("Helian Options") granted by Helian under the Helian Stock
Plans and outstanding at the Effective Time, whether or not exercisable, and all
other  warrants  or other  Rights to  purchase  shares of  Helian  Common  Stock
(together with the Helian Options, the "Helian Rights"), shall be converted into
and become rights with respect to TheraTx Common Stock, and TheraTx shall assume
each Helian  Right,  in  accordance  with the terms of the Helian Stock Plan and
stock option agreement or other agreement by which it is evidenced,  except that
from and after the Effective  Time, (i) TheraTx and its  Compensation  Committee
shall be substituted for Helian and the Committee of Helian's Board of Directors
(including,   if   applicable,   the  entire   Board  of  Directors  of  Helian)
administering  such Helian Stock Plan, (ii) each Helian Right assumed by TheraTx
may be exercised solely for shares of TheraTx Common Stock (or cash, in the case
of stock  appreciation  rights),  (iii) the number of shares of  TheraTx  Common
Stock  subject to such  Helian  Right  shall be equal to the number of shares of
Helian  Common  Stock  subject to such  Helian  Right  immediately  prior to the
Effective Time multiplied by the Exchange Ratio, and (iv) the per share exercise
price under each such Helian  Right shall be adjusted by dividing  the per share
exercise  price under each such Helian Right by the Exchange  Ratio and rounding
up to the nearest cent.  Notwithstanding  the  provisions of clause (iii) of the
preceding  sentence,  TheraTx  shall not be obligated to issue any fraction of a
share of TheraTx Common Stock upon exercise of Helian Rights and any fraction of
a share of TheraTx Common Stock that  otherwise  would be subject to a converted
Helian Right shall  represent  the right to receive a cash payment upon exercise
of such  converted  Helian  Right equal to the product of such  fraction and the
difference  between the market value of one share of TheraTx Common Stock at the
time of exercise of such Right and the per share  exercise  price of such Right.
The market value of one share of TheraTx Common Stock at the time of exercise of
a Right shall be the last sale price of such common stock on the Nasdaq National
Market (as reported by The Wall Street Journal or, if not reported thereby,  any
other  authoritative  source)  on the last  trading  day  preceding  the date of
exercise.  In addition,  notwithstanding the clauses (iii) and (iv) of the first
sentence of this Section 3.5, each Helian  Option which is an  "incentive  stock
option"  shall be  adjusted  as  required  by Section  424 of the Code,  and the
regulations  promulgated  thereunder,  so as not to  constitute a  modification,
extension or renewal of the option,  within the meaning of Section 424(h) of the
Code.

                    (b) All contractual  restrictions or limitations on transfer
with respect to Helian  Common Stock awarded under the Helian Stock Plans or any
other plan,  program,  Contract or  arrangement  of any Helian  Company,  to the
extent that such restrictions or limitations shall not have already lapsed,  and
except as  otherwise  expressly  provided  in such plan,  program,  Contract  or
arrangement,  shall  remain in full force and effect  with  respect to shares of
TheraTx Common Stock into which such stock is converted  pursuant to Section 3.1
of this Agreement.

                    (c)  Immediately  prior  to the  Effective  Time,  all  then
outstanding  rights to acquire  shares of Helian  Common  Stock  under  Helian's
Employee  Stock  Purchase  Plan (the "Helian  ESPP") will be  exercised  for the
purchase of shares of Helian Common Stock as provided in Section 8.15.

                    (d) Helian agrees to take all necessary  steps to effectuate
the foregoing  provisions of this Section 3.5,  including  using its  reasonable
efforts to obtain  from each holder of a Helian  Right any consent or  agreement
that  may  be  deemed   necessary  or  advisable  in  order  to  effectuate  the
transactions contemplated by this Section 3.5. Anything in this Agreement to the
contrary notwithstanding,  TheraTx shall have the right, in its sole discretion,
not to deliver the consideration provided in this Section 3.5 to a former holder
of a Helian Right who has not delivered such consent or agreement.

                                      -4-


                                    ARTICLE 4
                               EXCHANGE OF SHARES

              4.1  EXCHANGE  PROCEDURES.  Promptly  after  the  Effective  Time,
TheraTx  and Helian  shall cause the  exchange  agent  selected by TheraTx  (the
"Exchange  Agent")  to mail to the  former  stockholders  of Helian  appropriate
transmittal materials (which shall specify that delivery shall be effected,  and
risk of loss and title to the certificates  theretofore  representing  shares of
Helian Common Stock shall pass, only upon proper  delivery of such  certificates
to the  Exchange  Agent).  After the  Effective  Time,  each holder of shares of
Helian Common Stock (other than shares to be canceled pursuant to Section 3.3 of
this Agreement) issued and outstanding at the Effective Time shall surrender the
certificate or certificates  representing  such shares to the Exchange Agent and
shall  promptly  upon  surrender   thereof  receive  in  exchange  therefor  the
consideration  provided  in Section  3.1 of this  Agreement,  together  with all
undelivered  dividends  or  distributions  in  respect of such  shares  (without
interest  thereon)  pursuant  to Section  4.2 of this  Agreement.  To the extent
required  by  Section  3.4 of this  Agreement,  each  holder of shares of Helian
Common Stock issued and  outstanding  at the Effective  Time also shall receive,
upon surrender of the certificate or certificates representing such shares, cash
in lieu of any fractional share of TheraTx Common Stock to which such holder may
be otherwise  entitled  (without  interest).  TheraTx  shall not be obligated to
deliver the  consideration  to which any former holder of Helian Common Stock is
entitled as a result of the Merger until such holder  surrenders his certificate
or certificates  representing  the shares of Helian Common Stock for exchange as
provided in this Section 4.1. The  certificate or  certificates of Helian Common
Stock so  surrendered  shall be duly endorsed as the Exchange Agent may require.
Any other  provision of this Agreement  notwithstanding,  neither  TheraTx,  the
Surviving  Corporation  nor the  Exchange  Agent  shall be liable to a holder of
Helian Common Stock for any amounts paid or property  delivered in good faith to
a public official pursuant to any applicable abandoned property Law.

              4.2 RIGHTS OF FORMER HELIAN  STOCKHOLDERS.  At the Effective Time,
the stock  transfer  books of Helian  shall be  closed as to  holders  of Helian
Common Stock  immediately  prior to the Effective Time and no transfer of Helian
Common Stock by any such holder shall  thereafter be made or  recognized.  Until
surrendered  for exchange in  accordance  with the  provisions of Section 4.1 of
this  Agreement,  each  certificate  theretofore  representing  shares of Helian
Common Stock  (other than shares to be canceled  pursuant to Section 3.3 of this
Agreement)  shall from and after the Effective  Time  represent for all purposes
only the right to receive the consideration  provided in Sections 3.1 and 3.4 of
this  Agreement  in  exchange  therefor,  subject,  however,  to  the  Surviving
Corporation's  obligation to pay any  dividends or make any other  distributions
with a record date prior to the Effective  Time which have been declared or made
by Helian in respect of such shares of Helian  Common Stock in  accordance  with
the terms of this  Agreement  and which  remain  unpaid at the  Effective  Time.
Whenever a dividend or other  distribution is declared by TheraTx on the TheraTx
Common Stock,  the record date for which is at or after the Effective  Time, the
declaration  shall  include  dividends  or  other  distributions  on all  shares
issuable  pursuant to this  Agreement,  but no  dividend  or other  distribution
payable  to the  holders  of  record  of  TheraTx  Common  Stock  as of any time
subsequent  to the  Effective  Time  shall be  delivered  to the  holder  of any
certificate representing shares of Helian Common Stock issued and outstanding at
the Effective Time until such holder surrenders such certificate for exchange as
provided in Section  4.1 of this  Agreement.  However,  upon  surrender  of such
Helian  Common Stock  certificate,  both the TheraTx  Common  Stock  certificate
(together with all such  undelivered  dividends or other  distributions  without
interest) and any  undelivered  cash  payments for  fractional  share  interests
(without  interest)  shall be  delivered  and paid with  respect  to each  share
represented by such certificate.


                                    ARTICLE 5
                    REPRESENTATIONS AND WARRANTIES OF HELIAN

              Helian hereby represents and warrants to TheraTx as follows:

              5.1  ORGANIZATION,  STANDING,  AND POWER.  Helian is a corporation
duly  organized,  validly  existing,  and in good standing under the Laws of the
State of Delaware,  and has the  corporate  power and  authority to carry

                                      -5-



on its  business  as now  conducted  and to own,  lease and  operate its Assets.
Helian  is  duly  qualified  or  licensed  to  transact  business  as a  foreign
corporation  in good  standing  in the States of the United  States and  foreign
jurisdictions  where the character of its Assets or the nature or conduct of its
business  requires  it  to  be  so  qualified  or  licensed,   except  for  such
jurisdictions  in which  the  failure  to be so  qualified  or  licensed  is not
reasonably likely to have,  individually or in the aggregate, a Material Adverse
Effect on Helian.

              5.2   AUTHORITY; NO BREACH BY AGREEMENT.

                    (a) Helian has the corporate  power and authority  necessary
to execute,  deliver,  and perform its  obligations  under this Agreement and to
consummate the transactions  contemplated hereby. The execution,  delivery,  and
performance  of  this  Agreement  and  the   consummation  of  the  transactions
contemplated herein, including the Merger, have been duly and validly authorized
by all  necessary  corporate  action in  respect  thereof on the part of Helian,
subject to the  approval of this  Agreement  by the holders of a majority of the
outstanding Helian Common Stock, which is the only stockholder vote required for
approval of this Agreement and consummation of the Merger by Helian.  Subject to
such requisite stockholder approval,  this Agreement (which for purposes of this
sentence  shall not  include the Stock  Option  Agreement)  represents  a legal,
valid,  and  binding  obligation  of  Helian,   enforceable  against  Helian  in
accordance  with its terms  (except in all cases as such  enforceability  may be
limited by applicable bankruptcy,  insolvency,  reorganization,  moratorium,  or
similar Laws affecting the enforcement of creditors' rights generally and except
that the  availability  of the  equitable  remedy  of  specific  performance  or
injunctive  relief is subject to the  discretion  of the court  before which any
proceeding may be brought).

                    (b) Neither the execution and delivery of this  Agreement by
Helian, nor the consummation by Helian of the transactions  contemplated hereby,
nor  compliance by Helian with any of the provisions  hereof,  will (i) conflict
with  or  result  in  a  breach  of  any  provision  of  Helian's   Articles  of
Incorporation  or Bylaws,  or (ii)  constitute or result in a Default under,  or
require any Consent  pursuant  to, or result in the  creation of any Lien on any
Asset of any Helian  Company  under,  any Contract  (including  any  partnership
agreement) or Permit of any Helian  Company,  where such Default or Lien, or any
failure to obtain such Consent, is reasonably likely to have, individually or in
the aggregate, a Material Adverse Effect on Helian, or, (iii) subject to receipt
of the  requisite  approvals  referred to in Section  9.1(b) of this  Agreement,
violate  any Law or  Order  applicable  to any  Helian  Company  or any of their
respective material Assets.

                    (c)  Other  than  in  connection  or  compliance   with  the
provisions of the Securities  Laws,  applicable  state  corporate and securities
Laws,  and rules of the NASD, and other than Consents  required from  Regulatory
Authorities,  and other than  notices to or filings  with the  Internal  Revenue
Service or the Pension Benefit Guaranty Corporation with respect to any employee
benefit  plans,  or under the HSR Act,  and other  than  Consents,  filings,  or
notifications which, if not obtained or made, are not reasonably likely to have,
individually or in the aggregate, a Material Adverse Effect on Helian, no notice
to,  filing with,  or Consent of, any public body or authority is necessary  for
the consummation by Helian of the Merger and the other transactions contemplated
in this Agreement.

              5.3   CAPITAL STOCK.

                    (a) The  authorized  capital  stock of  Helian  consists  of
20,000,000  shares of Helian Common Stock, of which 5,475,137  shares are issued
and  outstanding  as of the date of this  Agreement and not more than  6,047,638
shares will be issued and  outstanding at the Effective  Time. All of the issued
and  outstanding  shares of capital stock of Helian are duly and validly  issued
and outstanding and are fully paid and nonassessable under the DGCL. None of the
outstanding  shares of capital  stock of Helian has been issued in  violation of
any preemptive rights of the current or past stockholders of Helian.

                    (b) Except as set forth in Section 5.3(a) of this Agreement,
or as provided in the Stock Option Agreement,  or as disclosed in Section 5.3 of
the Helian Disclosure Memorandum,  there are no shares of capital stock or other
equity  securities of Helian  outstanding and no outstanding  Rights relating to
the capital stock of Helian.

                                      -6-



              5.4 HELIAN  SUBSIDIARIES.  Helian has  disclosed in Section 5.4 of
the  Helian  Disclosure  Memorandum  all of the  Helian  Subsidiaries  that  are
corporations (identifying its state of incorporation, each jurisdiction in which
the character or location of the properties  owned or leased by such  Subsidiary
requires it to be qualified and/or licensed to transact business,  and number of
shares owned and percentage  interest  represented by such share  ownership) and
all  of the  Helian  Subsidiaries  that  are  general  or  limited  partnerships
(identifies  whether each such  Subsidiary is a general or limited  partnership,
its state of formation,  each jurisdiction in which the character or location of
the properties  owned or leased by such  Subsidiary  requires it to be qualified
and/or  licensed  to  transact  business,  any  other  Subsidiary  that  owns  a
partnership interest therein (whether as a general or limited partner),  and the
amount of such partnership interest).  Except as disclosed in Section 5.4 of the
Helian  Disclosure  Memorandum,  Helian or one of its wholly owned  Subsidiaries
owns all of the issued and  outstanding  shares of  capital  stock,  partnership
interests  or other  equity  securities  of each  Helian  Subsidiary.  Except as
disclosed in Section 5.4 of the Helian Disclosure Memorandum,  no capital stock,
partnership interests or other equity securities of any Helian Subsidiary are or
may become  required  to be issued  (other  than to another  Helian  Company) by
reason of any Rights,  and there are no Contracts by which any Helian Subsidiary
is bound to issue (other than to another Helian  Company)  additional  shares of
its capital stock, partnership interests or other equity securities or Rights or
by which any  Helian  Company is or may be bound to  transfer  or  purchase  any
shares of the capital stock, partnership interests or other equity securities of
any Helian  Subsidiary  (other  than to another  Helian  Company).  There are no
Contracts  relating to the rights of any Helian Company to vote or to dispose of
any shares of the capital  stock or any  partnership  interests  or other equity
securities of any Helian Subsidiary.  All of the shares of capital stock of each
Helian  Subsidiary  held by a Helian  Company  are fully paid and  nonassessable
under  the  applicable  corporation  Law  of  the  jurisdiction  in  which  such
Subsidiary is incorporated or organized and are owned by the Helian Company free
and clear of any Lien.  Each  Helian  Subsidiary  is either a  corporation  or a
general or limited partnership, and is duly organized, validly existing, and (as
to corporations) in good standing under the Laws of the jurisdiction in which it
is incorporated or organized,  and has the power and authority  necessary for it
to own,  lease,  and  operate  its  Assets and to carry on its  business  as now
conducted.  Each Helian  Subsidiary  is duly  qualified  or licensed to transact
business as a foreign  corporation or partnership in good standing in the States
of the United States and foreign jurisdictions where the character of its Assets
or the nature or conduct  of its  business  requires  it to be so  qualified  or
licensed,  except for such jurisdictions in which the failure to be so qualified
or licensed is not reasonably likely to have,  individually or in the aggregate,
a Material  Adverse  Effect on Helian.  The minute  book and (for  partnerships)
partnership  agreement for each Subsidiary and, as to each limited  partnership,
the certificate of limited partnership or other organizational  documents,  have
been made  available  to TheraTx for its review,  and,  except as  disclosed  in
Section 5.4 of the Helian  Disclosure  Memorandum,  are true and  complete as in
effect of the date of this  Agreement  and  accurately  reflect  all  amendments
thereto and all  proceedings  thereof.  The issuance of all limited  partnership
interests  by each  Helian  Subsidiary  that is a limited  partnership  was made
pursuant to a valid exemption from registration under (i) the 1933 Act, and (ii)
all applicable state blue sky or securities laws.

              5.5   SEC FILINGS; FINANCIAL STATEMENTS.

                    (a)  Helian  has filed and made  available  to  TheraTx  all
forms,  reports and documents  required to be filed by Helian with the SEC since
November 30, 1992, other than registration statements on Form S-8 (collectively,
the  "Helian  SEC  Reports").  The Helian  SEC  Reports  (i) at the time  filed,
complied  in all  material  respects  with the  applicable  requirements  of the
Securities Act and the Exchange Act, as the case may be, and (ii) did not at the
time they were filed (or if amended or  superseded by a filing prior to the date
of this Agreement, then on the date of such filing) contain any untrue statement
of a material  fact or omit to state a material  fact  required  to be stated in
such Helian SEC Reports or  necessary  in order to make the  statements  in such
Helian SEC Reports,  in light of the  circumstances  under which they were made,
not  misleading.  None of Helian's  Subsidiaries  is required to file any forms,
reports or other documents with the SEC.

                    (b)  Except  as  disclosed  in  Section  5.5 of  the  Helian
Disclosure Memorandum,  each of the Helian Financial Statements  (including,  in
each case, any related notes) contained in the Helian SEC Reports, including any
Helian SEC Reports  filed after the date of this  Agreement  until the  Closing,
complied as to form in all material respects with the applicable published rules
and regulations of the SEC with respect thereto, was 

                                      -7-



prepared in accordance  with GAAP applied on a consistent  basis  throughout the
periods  involved  (except as may be  indicated  in the notes to such  financial
statements,  or, in the case of unaudited statements,  as permitted by Form 10-Q
of the SEC) and fairly presented the consolidated  financial  position of Helian
and its Subsidiaries as at the respective dates and the consolidated  results of
its  operations  and cash  flows  for the  periods  indicated,  except  that the
unaudited  interim  financial  statements  were or are  subject  to  normal  and
recurring year-end adjustments which were not or are not expected to be material
in amount.

              5.6 ABSENCE OF CERTAIN CHANGES OR EVENTS. Since November 30, 1994,
except as disclosed in the Helian  Financial  Statements  delivered prior to the
date of this  Agreement or as disclosed in Section 5.6 of the Helian  Disclosure
Memorandum,  (i) there have been no events,  changes,  or occurrences which have
had, or are  reasonably  likely to have,  individually  or in the  aggregate,  a
Material Adverse Effect on Helian,  and (ii) the Helian Companies have not taken
any action,  or failed to take any action,  prior to the date of this Agreement,
which  action  or  failure,  if taken  after the date of this  Agreement,  would
represent or result in a material  breach or  violation of any of the  covenants
and agreements of Helian provided in Article 7 of this Agreement.

              5.7 NO  LIABILITIES  AS GUARANTOR.  Except as disclosed in Section
5.7 of the  Helian  Disclosure  Memorandum,  no Helian  Company is  directly  or
indirectly liable, by guaranty,  indemnity,  or otherwise,  upon or with respect
to, or obligated,  by discount or  repurchase  agreement or in any other way, to
provide  funds in respect to, or obligated to guarantee or assume any  Liability
of any Person for any amount in excess of $25,000.

              5.8   TAX MATTERS.

                    (a) All Tax returns  required to be filed by or on behalf of
any of the Helian  Companies  have been timely filed or requests for  extensions
have been timely  filed,  granted,  and have not expired for periods ended on or
before  November 30, 1994,  and on or before the date of the most recent  fiscal
year end immediately preceding the Effective Time, except to the extent that all
such  failures to file,  taken  together,  are not  reasonably  likely to have a
Material  Adverse  Effect on Helian,  and all  returns  filed are  complete  and
accurate to the Knowledge of Helian.  All Taxes shown on filed returns have been
paid.  There is no audit  examination,  deficiency,  or refund  Litigation  with
respect to any Taxes that is reasonably likely to result in a determination that
would have,  individually  or in the  aggregate,  a Material  Adverse  Effect on
Helian,  except as reserved against in the Helian Financial Statements delivered
prior to the date of this Agreement or as disclosed in Section 5.8 of the Helian
Disclosure  Memorandum.  All Taxes and other  Liabilities  due with  respect  to
completed and settled examinations or concluded Litigation have been paid.

                    (b)  Except  as  disclosed  in  Section  5.8 of  the  Helian
Disclosure Memorandum, none of the Helian Companies has executed an extension or
waiver of any statute of  limitations on the assessment or collection of any Tax
due (excluding such statutes that relate to years currently under examination by
the Internal Revenue Service or other  applicable  taxing  authorities)  that is
currently in effect.

                    (c)  Adequate  provision  for any Taxes due or to become due
for any of the Helian  Companies for the period or periods through and including
the date of the  respective  Helian  Financial  Statements  has been made and is
reflected on such Helian Financial Statements.

                    (d)  Deferred  Taxes  of  the  Helian  Companies  have  been
provided for in accordance with GAAP.

                    (e) Each of the Helian  Companies is in compliance with, and
its records contain all information and documents  (including properly completed
IRS Forms W-9) necessary to comply with, all  applicable  information  reporting
and Tax withholding  requirements under federal,  state, and local Tax Laws, and
such  records   identify  with   specificity  all  accounts  subject  to  backup
withholding  under Section 3406 of the Internal  Revenue  Code,  except for such
instances of  noncompliance  and such omissions as are not reasonably  likely to
have, individually or in the aggregate, a Material Adverse Effect on Helian.


                                   -8-

                    (f) No Helian Company,  nor to the Knowledge of Helian,  any
predecessors  to which any such entity has succeeded,  has ever made an election
under Section 341(f) of the Internal Revenue Code and no such entity is a United
States  real  property  holding  corporation  as defined  in Section  897 of the
Internal Revenue Code.

              5.9  ASSETS.  Except as  disclosed  in  Section  5.9 of the Helian
Disclosure  Memorandum  or as  disclosed  or  reserved  against  in  the  Helian
Financial Statements  delivered prior to the date of this Agreement,  the Helian
Companies have good and marketable title, free and clear of all Liens, to all of
their respective Assets.  All tangible  properties used in the businesses of the
Helian Companies are in good condition,  reasonable wear and tear excepted,  and
are usable in the ordinary  course of business  consistent  with  Helian's  past
practices.  All items of inventory of the Helian Companies  reflected on the May
31, 1995 consolidated balance sheet contained in the Helian Financial Statements
consisted,  and all such items on hand on the date of this Agreement  consist of
items of a quality and quantity  usable and  saleable in the ordinary  course of
business  and conform to generally  accepted  standards in the industry in which
the Helian  Companies  are a part.  All Assets  which are  material  to Helian's
business on a consolidated  basis,  held under leases or subleases by any of the
Helian Companies,  are held under valid Contracts enforceable in accordance with
their  respective terms (except as  enforceability  may be limited by applicable
bankruptcy, insolvency, reorganization,  moratorium, or other Laws affecting the
enforcement of creditors'  rights  generally and except that the availability of
the equitable remedy of specific  performance or injunctive relief is subject to
the discretion of the court before which any  proceedings  may be brought),  and
each such Contract is in full force and effect.  The Helian Companies  currently
maintain insurance similar in amounts, scope, and coverage to that maintained by
other peer health care organizations.  Except as disclosed in Section 5.9 of the
Helian Disclosure  Memorandum,  none of the Helian Companies has received notice
from any  insurance  carrier  that (i) such  insurance  will be canceled or that
coverage  thereunder  will be reduced or eliminated,  or (ii) premium costs with
respect to such policies of insurance will be substantially increased. Except as
disclosed  in  Section  5.9 of  the  Helian  Disclosure  Memorandum,  there  are
presently no claims pending under such policies of insurance and no notices have
been given by any Helian Company under such  policies.  The Assets of the Helian
Companies  include all assets  required  to operate  the  business of the Helian
Companies as presently conducted.

              5.10  INTELLECTUAL  PROPERTY.  All  of the  Intellectual  Property
rights of the Helian  Companies  are in full  force and  effect  and  constitute
legal,  valid and binding  obligations of the respective  parties  thereto;  and
there have not been, and to the Knowledge of Helian, there currently are not any
Defaults thereunder by any party. Helian or one of its Subsidiaries owns or is a
valid licensee of all such  Intellectual  Property  rights free and clear of all
Liens or  claims  of  infringement.  None of the  Helian  Companies  or,  to the
Knowledge of Helian, their respective predecessors have misused the Intellectual
Property rights of others and none of the  Intellectual  Property rights as used
in the  business  conducted  by any  such  entity  infringes  upon or  otherwise
violates  the  rights of  others,  nor has any  person  asserted a claim of such
infringement.  No Helian Company is obligated to pay any royalties to any person
or entity with respect to any such  Intellectual  Property.  Each Helian Company
owns or has the valid right to use all of the Intellectual Property rights which
it is presently  using,  or in connection  with the  performance of any material
Contract,  proposal  or  letter  of  intent  to which it is a party.  Except  as
described  in Section  5.10 of the Helian  Disclosure  Memorandum,  no  officer,
director or employee of any Helian  Company has entered into any Contract  which
requires  such  officer,  director  or  employee  to assign any  interest in any
Intellectual Property or keep confidential any trade secrets,  proprietary data,
patient lists or other business information or which restricts or prohibits such
officer,  director or employee from engaging in activities  competitive with any
Helian Company.

              5.11  ENVIRONMENTAL MATTERS.

                    (a) To the  Knowledge of Helian,  each Helian  Company,  its
Participation  Facilities,  and its Operating  Properties are, and have been, in
compliance  with all  Environmental  Laws,  except for violations  which are not
reasonably likely to have,  individually or in the aggregate, a Material Adverse
Effect on Helian.

                    (b) To the  Knowledge  of  Helian,  there  is no  Litigation
pending or threatened  before any court,  governmental  agency,  or authority or
other forum in which any Helian Company or any of its  Participation  Facilities
or Operating Properties has been or, with respect to threatened Litigation,  may
be  named  as a  defendant 

                                      -9-


(i)  for  alleged   noncompliance   (including  by  any  predecessor)  with  any
Environmental  Law or (ii)  relating  to  presence  of or the  release  into the
environment of any Hazardous  Material,  whether or not occurring at, on, under,
adjacent to, or affecting (or potentially  affecting) a site owned,  leased,  or
operated by any Helian Company or any of its  Participation  Facilities,  except
for such Litigation pending or threatened that is not reasonably likely to have,
individually or in the aggregate,  a Material  Adverse Effect on Helian,  nor is
there  any  reasonable  basis for any  Litigation  of a type  described  in this
sentence,  except such as is not reasonably  likely to have,  individually or in
the aggregate, a Material Adverse Effect on Helian.

                    (c)  Except  as  disclosed  in  Section  5.11 of the  Helian
Disclosure  Memorandum,  to the  Knowledge  of  Helian,  there are no  Hazardous
Materials present in, on, under or affecting (or potentially affecting),  and no
releases of Hazardous  Material  in, on,  under,  adjacent to, or affecting  (or
potentially  affecting) any site owned, leased or operated by any Helian Company
or any of its Participation Facilities, except such as are not reasonably likely
to have, individually or in the aggregate, a Material Adverse Effect on Helian.

              5.12  COMPLIANCE  WITH LAWS. Each Helian Company has in effect all
Permits  necessary for it to own,  lease,  or operate its material Assets and to
carry on its business as now conducted including,  without limitation, the right
to receive  Medicare and Medicaid  reimbursements,  except for those Permits the
absence  of which  are not  reasonably  likely to have,  individually  or in the
aggregate,  a Material  Adverse  Effect on  Helian,  and there has  occurred  no
Default  under any such Permit,  other than  Defaults  which are not  reasonably
likely to have,  individually or in the aggregate,  a Material Adverse Effect on
Helian. Except as disclosed in Section 5.12 of the Helian Disclosure Memorandum,
none of the Helian Companies:

                  (a) is in violation of any Laws, Orders, or Permits applicable
       to  its  business  or  employees  conducting  its  business,  except  for
       violations  which are not reasonably  likely to have,  individually or in
       the aggregate, a Material Adverse Effect on Helian; and

                  (b) has received any  notification or  communication  from any
       agency or  department  of  federal,  state,  or local  government  or any
       Regulatory  Authority or the staff thereof (i) asserting  that any Helian
       Company is not in  compliance  with any of the Laws or Orders  which such
       governmental  authority  or  Regulatory  Authority  enforces,  where such
       noncompliance  is  reasonably  likely  to  have,  individually  or in the
       aggregate,  a Material  Adverse  Effect on Helian,  (ii)  threatening  to
       revoke any Permits, the revocation of which is reasonably likely to have,
       individually or in the aggregate, a Material Adverse Effect on Helian, or
       (iii)  requiring  any  Helian  Company  to enter  into or  consent to the
       issuance  of a cease  and  desist  order,  formal  agreement,  directive,
       commitment,  or  memorandum  of  understanding,  or to  adopt  any  Board
       resolution or similar undertaking.

The right of (i) the Helian Companies,  or (ii) to the Knowledge of Helian,  any
licensed professional or other individual affiliated with any Helian Company, to
receive Medicare or Medicaid reimbursements has not been terminated or otherwise
adversely  affected as a result of any investigation or action by any Regulatory
Authority;  provided,  that,  with respect to persons  identified in clause (ii)
above,  only to the  extent  such  termination  or other  adverse  affect  would
materially and adversely affect such Helian Company. Except disclosed in Section
5.12  of  the  Helian  Disclosure  Memorandum,  no  Helian  Company,  nor to the
Knowledge of Helian,  any licensed  professional or other individual  affiliated
therewith,  has,  during  the past  three (3)  years,  been the  subject  of any
inspection,  investigation,  survey,  audit or  monitoring  by any  governmental
regulatory  entity,   trade  association,   professional  review   organization,
accrediting  organization  or  certifying  agency,  which  has  resulted  in  an
outstanding  deficiency  which  would  have or is  reasonably  likely  to have a
Material   Adverse   Effect  on  Helian.   Copies  of  all   material   reports,
correspondence,  notices and other  documents  relating to any such  inspection,
investigation, survey, audit, monitoring or other form of review by a Regulatory
Authority  to  which  any of the  foregoing  has been  subject  have  been  made
available to TheraTx.

              5.13 LABOR  RELATIONS.  No Helian  Company  is the  subject of any
Litigation asserting that it or any other Helian Company has committed an unfair
labor  practice  (within  the meaning of the  National  Labor  Relations  Act or
comparable  state law) or seeking  to compel it or any other  Helian  Company to
bargain with any labor 

                                      -10-



organization as to wages or conditions of employment, nor is there any strike or
other labor dispute involving any Helian Company,  pending or threatened,  or to
the Knowledge of Helian,  is there any activity  involving any Helian  Company's
employees  seeking to certify a  collective  bargaining  unit or engaging in any
other organization activity.

              5.14  EMPLOYEE BENEFIT PLANS.

                    (a)  Helian  has  disclosed  in  Section  5.14 of the Helian
Disclosure  Memorandum,  and has delivered or made available to TheraTx prior to
the execution of this Agreement copies in each case of, all pension, retirement,
profit-sharing,  deferred compensation,  stock option, employee stock ownership,
severance  pay,  vacation,  bonus,  or other  incentive  plan, all other written
employee programs,  arrangements, or agreements, all medical, vision, dental, or
other health plans,  all life insurance  plans,  and all other employee  benefit
plans or fringe benefit plans,  including  "employee benefit plans" as that term
is defined in Section 3(3) of ERISA, currently adopted, maintained by, sponsored
in  whole  or in part by,  or  contributed  to by any  Helian  Company  or ERISA
Affiliate (as defined in Section  5.14(c)) thereof for the benefit of employees,
retirees,  dependents,  spouses,  directors,  independent contractors,  or other
beneficiaries  and  under  which  employees,  retirees,   dependents,   spouses,
directors,  independent  contractors,  or other  beneficiaries  are  eligible to
participate  (collectively,  the  "Helian  Benefit  Plans").  Any of the  Helian
Benefit  Plans  which is an  "employee  pension  benefit  plan," as that term is
defined in  Section  3(2) of ERISA,  is  referred  to herein as a "Helian  ERISA
Plan." Each Helian ERISA Plan which is also a "defined benefit plan" (as defined
in Section  414(j) of the  Internal  Revenue  Code) is  referred  to herein as a
"Helian  Pension  Plan." No Helian  Pension Plan is or has been a  multiemployer
plan within the meaning of Section 3(37) of ERISA.

                    (b) All  Helian  Benefit  Plans are in  compliance  with the
applicable  terms of ERISA,  the Internal Revenue Code, and any other applicable
Laws  the  breach  or  violation  of  which  are  reasonably   likely  to  have,
individually  or in the aggregate,  a Material  Adverse  Effect on Helian.  Each
Helian ERISA Plan which is intended to be qualified  under Section 401(a) of the
Internal  Revenue  Code has received a favorable  determination  letter from the
Internal Revenue Service, and Helian is not aware of any circumstances likely to
result  in  revocation  of  any  such  favorable  determination  letter.  To the
Knowledge of Helian, no Helian Company has engaged in a transaction with respect
to any Helian Benefit Plan that, assuming the taxable period of such transaction
expired as of the date hereof, would subject any Helian Company to a Tax imposed
by either  Section 4975 of the Internal  Revenue Code or Section 502(i) of ERISA
in  amounts  which  are  reasonably  likely  to  have,  individually  or in  the
aggregate, a Material Adverse Effect on Helian.

                    (c)  No  Helian  Pension  Plan  has  any  "unfunded  current
liability," as that term is defined in Section  302(d)(8)(A)  of ERISA,  and the
fair market  value of the assets of any such plan  exceeds  the plan's  "benefit
liabilities,"  as that term is  defined in Section  4001(a)(16)  of ERISA,  when
determined  under  actuarial  factors that would apply if the plan terminated in
accordance with all applicable  legal  requirements.  Since the date of the most
recent  actuarial  valuation,  there  has been  (i) no  material  change  in the
financial  position of any Helian Pension Plan,  (ii) no change in the actuarial
assumptions  with respect to any Helian  Pension Plan,  and (iii) no increase in
benefits under any Helian Pension Plan as a result of plan amendments or changes
in applicable  Law which is reasonably  likely to have,  individually  or in the
aggregate,  a Material  Adverse Effect on Helian or materially  adversely affect
the funding  status of any such plan.  Neither any Helian  Pension  Plan nor any
"single-employer  plan,"  within the  meaning of Section  4001(a)(15)  of ERISA,
currently or formerly  maintained by any Helian Company,  or the single-employer
plan of any entity which is  considered  one employer  with Helian under Section
4001 of ERISA or Section  414 of the  Internal  Revenue  Code or Section  302 of
ERISA (whether or not waived) (an "ERISA Affiliate") has an "accumulated funding
deficiency"  within the meaning of Section 412 of the  Internal  Revenue Code or
Section  302 of ERISA,  which is  reasonably  likely to have a Material  Adverse
Effect on Helian.  No Helian  Company has  provided,  or is required to provide,
security to a Helian  Pension  Plan or to any  single-employer  plan of an ERISA
Affiliate pursuant to Section 401(a)(29) of the Code.

                    (d) No Liability  under Subtitle C or D of Title IV of ERISA
has been or is expected to be incurred by any Helian Company with respect to any
ongoing, frozen, or terminated  single-employer plan or the single-employer plan
of any ERISA Affiliate,  which Liability is reasonably likely to have a Material
Adverse  Effect on  Helian.  No  Helian  Company  has  incurred  any  withdrawal
Liability with respect to a  multiemployer  plan under 

                                      -11-



Subtitle B of Title IV of ERISA (regardless of whether based on contributions of
an ERISA  Affiliate),  which  Liability is reasonably  likely to have a Material
Adverse Effect on Helian. No notice of a "reportable  event," within the meaning
of Section 4043 of ERISA for which the 30-day reporting requirement has not been
waived,  has been  required  to be filed for any Helian  Pension  Plan or by any
ERISA Affiliate within the 12-month period ending on the date hereof.

                    (e)  Except  as  disclosed  in  Section  5.14 of the  Helian
Disclosure  Memorandum,  no Helian  Company has any Liability for retiree health
and life  benefits  under  any of the  Helian  Benefit  Plans  and  there are no
restrictions on the rights of such Helian Company to amend or terminate any such
retiree  health and benefit Plan without  incurring  any  Liability  thereunder,
which  Liability  is  reasonably  likely to have a  Material  Adverse  Effect on
Helian.

                    (f)  Except  as  disclosed  in  Section  5.14 of the  Helian
Disclosure Memorandum,  neither the execution and delivery of this Agreement nor
the consummation of the transactions  contemplated hereby will (i) result in any
payment (including severance,  unemployment  compensation,  golden parachute, or
otherwise)  becoming due to any  director or any employee of any Helian  Company
from any  Helian  Company  under any  Helian  Benefit  Plan or  otherwise,  (ii)
increase any benefits  otherwise payable under any Helian Benefit Plan, or (iii)
result  in any  acceleration  of the  time of  payment  or  vesting  of any such
benefit,  where such payment,  increase, or acceleration is reasonably likely to
have, individually or in the aggregate, a Material Adverse Effect on Helian.

                    (g) The  actuarial  present  values of all accrued  deferred
compensation   entitlements   (including   entitlements   under  any   executive
compensation, supplemental retirement, or employment agreement) of employees and
former employees of any Helian Company and their respective beneficiaries, other
than  entitlements  accrued  pursuant to funded  retirement plans subject to the
provisions of Section 412 of the Internal  Revenue Code or Section 302 of ERISA,
have been fully  reflected  on the  Helian  Financial  Statements  to the extent
required by and in accordance with GAAP.

              5.15  MATERIAL  CONTRACTS.  Except as disclosed in Section 5.15 of
the Helian Disclosure  Memorandum or otherwise reflected in the Helian Financial
Statements,  none of the Helian Companies,  nor any of their respective  Assets,
businesses,  or  operations,  is a party  to,  or is bound or  affected  by,  or
receives  benefits  under,  (i) any  employment,  medical  director,  severance,
termination, consulting, or retirement Contract providing for aggregate payments
to any  Person in any  calendar  year in excess of  $50,000,  (ii) any  Contract
relating to the borrowing of money by any Helian Company or the guarantee by any
Helian Company of any such obligation (other than Contracts  evidencing  deposit
liabilities,  trade payables, and Contracts relating to borrowings or guarantees
made in the  ordinary  course of  business),  (iii) any  capitation  or  partial
capitation  agreements  with health care payors,  and (iv) any other Contract or
amendment  thereto  that would be  required  to be filed as an exhibit to a Form
10-K filed by Helian with the SEC as of the date of this  Agreement that has not
been filed as an exhibit to  Helian's  Form 10-K filed for the fiscal year ended
November  30,  1994,  or in  another  SEC  Document  and  identified  to TheraTx
(together  with all  Contracts  referred to in Sections  5.9 and 5.14(a) of this
Agreement,  the "Helian  Contracts").  With respect to each Helian  Contract and
except as disclosed in Section 5.15 of the Helian Disclosure Memorandum: (i) the
Contract  is in full  force and  effect;  (ii) no Helian  Company  is in Default
thereunder,  other  than  Defaults  which  are not  reasonably  likely  to have,
individually or in the aggregate,  a Material Adverse Effect on Helian; (iii) no
Helian  Company has  repudiated  or waived any  material  provision  of any such
Contract;  and (iv) no other party to any such  Contract is, to the Knowledge of
Helian, in Default in any respect,  other than Defaults which are not reasonably
likely to have,  individually or in the aggregate,  a Material Adverse Effect on
Helian,  or has  repudiated or waived any material  provision  thereunder.  With
respect to Contracts  relating to indebtedness  of any Helian  Company,  Section
5.15 of the Helian  Disclosure  Memorandum  sets forth the name of the principal
obligor, all guarantors,  the principal amounts outstanding as of June 30, 1995,
per annum interest rates and maturity dates for all such indebtedness. Except as
disclosed  in  Section  5.15 of the  Helian  Disclosure  Memorandum,  all of the
indebtedness  of any Helian Company for money borrowed is prepayable at any time
by such Helian  Company  without  penalty or  premium.  Except as  disclosed  in
Section  5.15 of the Helian  Disclosure  Memorandum,  no Helian  Company has any
Liabilities to any Affiliate.

                                      -12-


              5.16  LEGAL  PROCEEDINGS.  There is no  Litigation  instituted  or
pending,  or,  to  the  Knowledge  of  Helian,  threatened  (or  unasserted  but
considered  probable of  assertion  and which if asserted  would have at least a
reasonable probability of an unfavorable outcome) against any Helian Company, or
against any Asset,  interest, or right of any of them, that is reasonably likely
to have,  individually or in the aggregate, a Material Adverse Effect on Helian,
nor are  there any  Orders of any  Regulatory  Authorities,  other  governmental
authorities,  or arbitrators  outstanding  against any Helian Company,  that are
reasonably likely to have,  individually or in the aggregate, a Material Adverse
Effect on Helian.  Section 5.16 of the Helian Disclosure  Memorandum  includes a
summary  report of all  Litigation as of the date of this Agreement to which any
Helian  Company is a party and which names a Helian  Company as a  defendant  or
cross defendant.

              5.17  REPORTS.  Subject to the  provisions  of Section 5.5,  since
January 1, 1992, or the date of organization  if later,  each Helian Company has
timely filed all reports and statements,  together with any amendments  required
to be made  with  respect  thereto,  that it was  required  to file  with  other
Regulatory  Authorities (including any applicable state securities or healthcare
authorities),  other than  failures to file which are not  reasonably  likely to
have,  individually or in the aggregate, a Material Adverse Effect on Helian. As
of their  respective  dates,  each of such reports and documents,  including the
financial statements,  exhibits, and schedules thereto, complied in all material
respects with all applicable  Laws. As of its respective  date, each such report
and document did not, in all material respects,  contain any untrue statement of
a material fact or omit to state a material  fact required to be stated  therein
or necessary to make the statements made therein,  in light of the circumstances
under which they were made, not misleading.

              5.18 STATEMENTS TRUE AND CORRECT. None of the information supplied
or to be supplied by any Helian  Company or any Affiliate  thereof for inclusion
in the Registration Statement to be filed by TheraTx with the SEC will, when the
Registration Statement becomes effective, be false or misleading with respect to
any  material  fact,  or omit to state any material  fact  necessary to make the
statements  therein not misleading.  None of the  information  supplied or to be
supplied by any Helian  Company or any  Affiliate  thereof for  inclusion in the
Proxy  Statement to be mailed to Helian's  stockholders  in connection  with the
Stockholders'  Meeting,  and any other documents to be filed by a Helian Company
or any  Affiliate  thereof  with the SEC or any other  Regulatory  Authority  in
connection with the transactions  contemplated  hereby,  will, at the respective
time such  documents are filed,  and with respect to the Proxy  Statement,  when
first mailed to the stockholders of Helian,  be false or misleading with respect
to any material  fact, or omit to state any material fact  necessary to make the
statements  therein,  in light of the circumstances  under which they were made,
not misleading,  or, in the case of the Proxy Statement or any amendment thereof
or supplement  thereto,  at the time of the Stockholders'  Meeting,  be false or
misleading with respect to any material fact, or omit to state any material fact
necessary to correct any statement in any earlier  communication with respect to
the solicitation of any proxy for the Stockholders'  Meeting. All documents that
any Helian Company or any Affiliate  thereof is responsible  for filing with any
Regulatory  Authority in connection with the  transactions  contemplated  hereby
will  comply  as to  form  in all  material  respects  with  the  provisions  of
applicable Law.

              5.19 ACCOUNTING,  TAX AND REGULATORY MATTERS. No Helian Company or
any  Affiliate  thereof has taken any action or has any Knowledge of any fact or
circumstance   that  is  reasonably  likely  to  (i)  prevent  the  transactions
contemplated    hereby,    including   the   Merger,    from    qualifying   for
pooling-of-interests  accounting  treatment  or as a  reorganization  within the
meaning of Section  368(a) of the  Internal  Revenue  Code,  or (ii)  materially
impede or delay receipt of any Consents of Regulatory Authorities referred to in
Section  9.1(b) of this  Agreement or result in the imposition of a condition or
restriction of the type referred to in the last sentence of such Section.

              5.20  STATE  TAKEOVER  LAWS.  Each  Helian  Company  has taken all
necessary action to exempt the transactions  contemplated by this Agreement from
any applicable state takeover Law, including Section 203 of the DGCL.

              5.21 CHARTER PROVISIONS.  Each Helian Company has taken all action
so that the entering into of this Agreement and the  consummation  of the Merger
and the other  transactions  contemplated  by this Agreement 

                                      -13-



do not and will not result in the grant of any  rights to any  Person  under the
Certificate or Articles of Incorporation,  Bylaws or other governing instruments
of any Helian Company or restrict or impair the ability of TheraTx or any of its
Subsidiaries to vote, or otherwise to exercise the rights of a stockholder  with
respect to,  shares of any Helian  Company  that may be  directly or  indirectly
acquired or controlled by it.


                                    ARTICLE 6
                    REPRESENTATIONS AND WARRANTIES OF THERATX

              TheraTx hereby represents and warrants to Helian as follows:

              6.1 ORGANIZATION,  STANDING,  AND POWER.  TheraTx is a corporation
duly  organized,  validly  existing,  and in good standing under the Laws of the
State of Delaware,  and has the  corporate  power and  authority to carry on its
business as now conducted and to own,  lease and operate its Assets.  TheraTx is
duly qualified or licensed to transact business as a foreign corporation in good
standing in the States of the United States and foreign  jurisdictions where the
character of its Assets or the nature or conduct of its business  requires it to
be so qualified or licensed,  except for such jurisdictions in which the failure
to be so qualified or licensed is not reasonably likely to have, individually or
in the aggregate, a Material Adverse Effect on TheraTx.

              6.2   AUTHORITY; NO BREACH BY AGREEMENT.

                    (a) TheraTx has the corporate power and authority  necessary
to execute,  deliver and perform its  obligations  under this  Agreement  and to
consummate the transactions  contemplated  hereby.  The execution,  delivery and
performance  of  this  Agreement  and  the   consummation  of  the  transactions
contemplated herein, including the Merger, have been duly and validly authorized
by all  necessary  corporate  action in respect  thereof on the part of TheraTx.
Subject to such requisite  stockholder  approval,  this  Agreement  represents a
legal, valid, and binding obligation of TheraTx,  enforceable against TheraTx in
accordance  with its terms  (except in all cases as such  enforceability  may be
limited by applicable bankruptcy,  insolvency,  reorganization,  moratorium,  or
similar Laws affecting the enforcement of creditors' rights generally and except
that the  availability  of the  equitable  remedy  of  specific  performance  or
injunctive  relief is subject to the  discretion  of the court  before which any
proceeding may be brought).

                    (b) Neither the execution and delivery of this  Agreement by
TheraTx,  nor the  consummation  by  TheraTx  of the  transactions  contemplated
hereby,  nor compliance by TheraTx with any of the provisions  hereof,  will (i)
conflict with or result in a breach of any provision of TheraTx's Certificate of
Incorporation  or Bylaws,  or (ii)  constitute or result in a Default under,  or
require any Consent  pursuant  to, or result in the  creation of any Lien on any
Asset of any  TheraTx  Company  under,  any  Contract  or Permit of any  TheraTx
Company,  where such Default or Lien, or any failure to obtain such Consent,  is
reasonably likely to have,  individually or in the aggregate, a Material Adverse
Effect on  TheraTx,  or,  (iii)  subject to receipt of the  requisite  approvals
referred  to in  Section  9.1(b)  of this  Agreement,  violate  any Law or Order
applicable to any TheraTx Company or any of their respective material Assets.

                    (c)  Other  than  in  connection  or  compliance   with  the
provisions of the Securities  Laws,  applicable  state  corporate and securities
Laws,  and rules of the NASD, and other than Consents  required from  Regulatory
Authorities,  and other than  notices to or filings  with the  Internal  Revenue
Service or the Pension Benefit Guaranty Corporation with respect to any employee
benefit  plans,  or under the HSR Act,  and other  than  Consents,  filings,  or
notifications which, if not obtained or made, are not reasonably likely to have,
individually  or in the  aggregate,  a Material  Adverse  Effect on TheraTx,  no
notice to, filing with, or Consent of, any public body or authority is necessary
for the  consummation  by  TheraTx  of the  Merger  and the  other  transactions
contemplated in this Agreement.

                                      -14-


              6.3   CAPITAL STOCK.

                    (a) The authorized  capital stock of TheraTx consists of (i)
30,000,000 shares of TheraTx Common Stock, of which 18,712,498 shares are issued
and outstanding as of the date of this Agreement,  and (ii) 5,000,000  shares of
TheraTx  Preferred Stock,  none of which is issued and  outstanding.  All of the
issued and  outstanding  shares of  TheraTx  Capital  Stock are,  and all of the
shares of TheraTx  Common  Stock to be issued in  exchange  for shares of Helian
Common Stock upon consummation of the Merger, when issued in accordance with the
terms of this  Agreement,  will be, duly and validly issued and  outstanding and
fully paid and nonassessable  under the DGCL. None of the outstanding  shares of
TheraTx  Capital Stock has been,  and none of the shares of TheraTx Common Stock
to be issued in exchange for shares of Helian Common Stock upon  consummation of
the Merger will be, issued in violation of any preemptive  rights of the current
or past stockholders of TheraTx.

                    (b) Except as set forth in Section 6.3(a) of this Agreement,
or pursuant to the TheraTx Rights  Agreement,  or as disclosed in Section 6.3 of
the TheraTx Disclosure Memorandum, there are no shares of capital stock or other
equity securities of TheraTx  outstanding and no outstanding  Rights relating to
the capital stock of TheraTx.

              6.4   SEC FILINGS; FINANCIAL STATEMENTS.

                    (a)  TheraTx  has filed  and made  available  to Helian  all
forms,  reports and documents required to be filed by TheraTx with the SEC since
December 31, 1992, other than registration statements on Form S-8 (collectively,
the  "TheraTx  SEC  Reports").  The  TheraTx  SEC Reports (i) at the time filed,
complied  in all  material  respects  with the  applicable  requirements  of the
Securities Act and the Exchange Act, as the case may be, and (ii) did not at the
time they were filed (or if amended or  superseded by a filing prior to the date
of this Agreement, then on the date of such filing) contain any untrue statement
of a material  fact or omit to state a material  fact  required  to be stated in
such TheraTx SEC Reports or necessary  in order to make the  statements  in such
TheraTx SEC Reports,  in light of the circumstances  under which they were made,
not  misleading.  None of TheraTx's  Subsidiaries is required to file any forms,
reports or other documents with the SEC.

                    (b) Each of the TheraTx Financial Statements (including,  in
each case,  any related notes)  contained in the TheraTx SEC Reports,  including
any  TheraTx  SEC  Reports  filed  after  the date of this  Agreement  until the
Closing,  complied  as to form in all  material  respects  with  the  applicable
published rules and regulations of the SEC with respect thereto, was prepared in
accordance  with GAAP  applied on a  consistent  basis  throughout  the  periods
involved  (except as may be indicated in the notes to such financial  statements
or, in the case of unaudited  statements,  as permitted by Form 10-Q of the SEC)
and fairly  presented  the  consolidated  financial  position of TheraTx and its
Subsidiaries  as at the  respective  dates and the  consolidated  results of its
operations and cash flows for the periods  indicated,  except that the unaudited
interim  financial  statements  were or are  subject  to  normal  and  recurring
year-end  adjustments  which  were not or are not  expected  to be  material  in
amount.

              6.5 ABSENCE OF CERTAIN CHANGES OR EVENTS. Since December 31, 1994,
except as disclosed in the TheraTx Financial  Statements  delivered prior to the
date of this Agreement or as disclosed in Section 6.5 of the TheraTx  Disclosure
Memorandum,  (i) there have been no events,  changes or  occurrences  which have
had, or are  reasonably  likely to have,  individually  or in the  aggregate,  a
Material  Adverse  Effect on TheraTx,  and (ii) the TheraTx  Companies  have not
taken  any  action,  or  failed  to take any  action,  prior to the date of this
Agreement,  which action or failure,  if taken after the date of this Agreement,
would  represent  or result in a  material  breach  or  violation  of any of the
covenants and agreements of TheraTx provided in Article 7 of this Agreement.

              6.6   TAX MATTERS.

                    (a) All Tax returns  required to be filed by or on behalf of
any of the TheraTx  Companies  have been timely filed or requests for extensions
have been timely  filed,  granted,  and have not expired for periods ended on or
before  December 31, 1994,  and on or before the date of the most recent  fiscal
year end immediately preceding the Effective Time, except to the extent that all
such  failures to file,  taken  together,  are not  reasonably  

                                      -15-



likely to have a Material  Adverse Effect on TheraTx,  and all returns filed are
complete  and  accurate to the  Knowledge  of TheraTx.  All Taxes shown on filed
returns have been paid.  There is no audit  examination,  deficiency,  or refund
Litigation  with respect to any Taxes that is  reasonably  likely to result in a
determination  that would have,  individually  or in the  aggregate,  a Material
Adverse Effect on TheraTx,  except as reserved against in the TheraTx  Financial
Statements  delivered  prior to the date of this  Agreement  or as  disclosed in
Section  6.6  of  the  TheraTx  Disclosure  Memorandum.   All  Taxes  and  other
Liabilities due with respect to completed and settled  examinations or concluded
Litigation have been paid.

                    (b) None of the TheraTx  Companies has executed an extension
or waiver of any statute of  limitations  on the assessment or collection of any
Tax  due  (excluding   such  statutes  that  relate  to  years  currently  under
examination  by  the  Internal  Revenue  Service  or  other  applicable   taxing
authorities) that is currently in effect.

                    (c)  Adequate  provision  for any Taxes due or to become due
for any of the TheraTx Companies for the period or periods through and including
the date of the  respective  TheraTx  Financial  Statements has been made and is
reflected on such TheraTx Financial Statements.

                    (d)  Deferred  Taxes  of the  TheraTx  Companies  have  been
provided for in accordance with GAAP.

                    (e) Each of the Helian  Companies is in compliance with, and
its records contain all information and documents  (including properly completed
IRS Forms W-9) necessary to comply with, all  applicable  information  reporting
and Tax withholding  requirements under federal,  state, and local Tax Laws, and
such  records   identify  with   specificity  all  accounts  subject  to  backup
withholding  under Section 3406 of the Internal  Revenue  Code,  except for such
instances of  noncompliance  and such omissions as are not reasonably  likely to
have, individually or in the aggregate, a Material Adverse Effect on Helian.

              6.7  ASSETS.  Except as  disclosed  in Section  6.7 of the TheraTx
Disclosure  Memorandum  or as  disclosed  or  reserved  against  in the  TheraTx
Financial Statements delivered prior to the date of this Agreement,  the TheraTx
Companies have good and marketable title, free and clear of all Liens, to all of
their respective Assets.  All tangible  properties used in the businesses of the
TheraTx Companies are in good condition,  reasonable wear and tear excepted, and
are usable in the ordinary  course of business  consistent  with  TheraTx's past
practices.  All items of inventory of the TheraTx Companies reflected on the May
31,  1995  consolidated   balance  sheet  contained  in  the  TheraTx  Financial
Statements  consisted,  and all such items on hand on the date of this Agreement
consist of items of a quality and  quantity  usable and saleable in the ordinary
course of business and conform to generally  accepted  standards in the industry
in which the TheraTx  Companies  are a part.  All Assets  which are  material to
TheraTx's  business on a consolidated  basis,  held under leases or subleases by
any of the TheraTx  Companies,  are held under valid  Contracts  enforceable  in
accordance with their respective terms (except as enforceability  may be limited
by applicable bankruptcy, insolvency, reorganization,  moratorium, or other Laws
affecting the  enforcement  of creditors'  rights  generally and except that the
availability  of the  equitable  remedy of specific  performance  or  injunctive
relief is subject to the  discretion  of the court before which any  proceedings
may be brought), and each such Contract is in full force and effect. The TheraTx
Companies  currently maintain insurance similar in amounts,  scope, and coverage
to that maintained by other peer health care organizations.  None of the TheraTx
Companies has received notice from any insurance carrier that (i) such insurance
will be canceled or that coverage  thereunder will be reduced or eliminated,  or
(ii)  premium  costs  with  respect  to  such  policies  of  insurance  will  be
substantially  increased. The Assets of the TheraTx Companies include all assets
required  to  operate  the  business  of  the  TheraTx  Companies  as  presently
conducted.

              6.8 INTELLECTUAL PROPERTY. All of the Intellectual Property rights
of the  TheraTx  Companies  are in full force and effect and  constitute  legal,
valid and binding obligations of the respective parties thereto;  and there have
not been, and to the Knowledge of TheraTx,  there currently are not any Defaults
thereunder by any party.  TheraTx or one of its Subsidiaries  owns or is a valid
licensee of all such Intellectual Property rights free and clear of all Liens or
claims of  infringement.  None of the TheraTx  Companies or, to the Knowledge of
TheraTx,  their 

                                      -16-



respective  predecessors have misused the Intellectual Property rights of others
and none of the Intellectual  Property rights as used in the business  conducted
by any such entity  infringes  upon or otherwise  violates the rights of others,
nor has any person asserted a claim of such infringement.  No TheraTx Company is
obligated to pay any  royalties to any person or entity with respect to any such
Intellectual  Property.  Each TheraTx Company owns or has the valid right to use
all of the  Intellectual  Property  rights  which it is presently  using,  or in
connection with the performance of any material Contract,  proposal or letter of
intent to which it is a party.

              6.9   ENVIRONMENTAL MATTERS.

                    (a) To the Knowledge of TheraTx,  each TheraTx Company,  its
Participation  Facilities,  and its Operating  Properties are, and have been, in
compliance  with all  Environmental  Laws,  except for violations  which are not
reasonably likely to have,  individually or in the aggregate, a Material Adverse
Effect on TheraTx.

                    (b) To the  Knowledge  of  TheraTx,  there is no  Litigation
pending or threatened  before any court,  governmental  agency,  or authority or
other forum in which any TheraTx Company or any of its Participation  Facilities
or Operating Properties has been or, with respect to threatened Litigation,  may
be  named  as a  defendant  (i)  for  alleged  noncompliance  (including  by any
predecessor)  with any  Environmental Law or (ii) relating to presence of or the
release into the environment of any Hazardous Material, whether or not occurring
at, on,  under,  adjacent to, or  affecting  (or  potentially  affecting) a site
owned,  leased,  or operated by any TheraTx Company or any of its  Participation
Facilities,  except  for  such  Litigation  pending  or  threatened  that is not
reasonably likely to have,  individually or in the aggregate, a Material Adverse
Effect on TheraTx,  nor is there any  reasonable  basis for any  Litigation of a
type  described in this  sentence,  except such as is not  reasonably  likely to
have, individually or in the aggregate, a Material Adverse Effect on TheraTx.

                    (c) To the  Knowledge  of  TheraTx,  there are no  Hazardous
Materials present in, on, under or affecting (or potentially affecting),  and no
releases of Hazardous  Material  in, on,  under,  adjacent to, or affecting  (or
potentially affecting) any site owned, leased or operated by any TheraTx Company
or any of its Participation Facilities, except such as are not reasonably likely
to have, individually or in the aggregate, a Material Adverse Effect on TheraTx.

              6.10  COMPLIANCE WITH LAWS. Each TheraTx Company has in effect all
Permits  necessary  for it to own,  lease or operate its material  Assets and to
carry on its business as now conducted,  except for those Permits the absence of
which are not reasonably  likely to have,  individually  or in the aggregate,  a
Material Adverse Effect on TheraTx,  and there has occurred no Default under any
such  Permit,  other  than  Defaults  which are not  reasonably  likely to have,
individually or in the aggregate,  a Material Adverse Effect on TheraTx.  Except
as disclosed in Section 6.10 of the TheraTx  Disclosure  Memorandum,  no TheraTx
Company:

                  (a) is in violation of any Laws, Orders or Permits  applicable
       to  its  business  or  employees  conducting  its  business,  except  for
       violations  which are not reasonably  likely to have,  individually or in
       the aggregate, a Material Adverse Effect on TheraTx; and

                  (b) has received any  notification or  communication  from any
       agency or  department  of  federal,  state,  or local  government  or any
       Regulatory  Authority or the staff thereof (i) asserting that any TheraTx
       Company is not in  compliance  with any of the Laws or Orders  which such
       governmental  authority  or  Regulatory  Authority  enforces,  where such
       noncompliance  is  reasonably  likely  to  have,  individually  or in the
       aggregate,  a Material  Adverse  Effect on TheraTx,  (ii)  threatening to
       revoke any Permits, the revocation of which is reasonably likely to have,
       individually or in the aggregate,  a Material  Adverse Effect on TheraTx,
       or (iii)  requiring  any TheraTx  Company to enter into or consent to the
       issuance  of a cease  and  desist  order,  formal  agreement,  directive,
       commitment  or  memorandum  of  understanding,  or  to  adopt  any  Board
       resolution or similar undertaking, which restricts materially the conduct
       of its business.

The right of (i) the TheraTx Companies, or (ii) to the Knowledge of TheraTx, any
licensed  professional or other individual  affiliated with any TheraTx Company,
to receive  Medicare  or  Medicaid  reimbursements  has not been  

                                      -17-



terminated or otherwise  adversely  affected as a result of any investigation or
action by any  Regulatory  Authority;  provided,  that,  with respect to persons
identified in clause (ii) above,  only to the extent such  termination  or other
adverse  affect would  materially  and  adversely  affect such TheraTx  Company.
Except  disclosed  in Section  6.10 of the  TheraTx  Disclosure  Memorandum,  no
TheraTx Company, nor to the Knowledge of TheraTx,  any licensed  professional or
other  individual  affiliated  therewith,  has, during the past three (3) years,
been the subject of any inspection,  investigation,  survey, audit or monitoring
by any governmental  regulatory entity,  trade association,  professional review
organization,  accrediting organization or certifying agency, which has resulted
in an outstanding  deficiency which would have or is reasonably likely to have a
Material Adverse Effect on TheraTx.

              6.11 LABOR  RELATIONS.  No TheraTx  Company is the  subject of any
Litigation  asserting  that it or any other  TheraTx  Company has  committed  an
unfair labor practice (within the meaning of the National Labor Relations Act or
comparable  state law) or seeking to compel it or any other  TheraTx  Company to
bargain with any labor organization as to wages or conditions of employment, nor
is there any  strike or other  labor  dispute  involving  any  TheraTx  Company,
pending or  threatened,  or to the  Knowledge of TheraTx,  is there any activity
involving  any  TheraTx  Company's  employees  seeking to  certify a  collective
bargaining unit or engaging in any other organization activity.

              6.12  EMPLOYEE BENEFIT PLANS.

                    (a) TheraTx has delivered or made  available to Helian prior
to the  execution  of  this  Agreement  copies  in  each  case  of all  pension,
retirement, profit-sharing,  deferred compensation, stock option, employee stock
ownership,  severance pay,  vacation,  bonus, or other incentive plan, all other
written employee programs,  arrangements,  or agreements,  all medical,  vision,
dental,  or other health plans, all life insurance plans, and all other employee
benefit plans or fringe benefit  plans,  including  "employee  benefit plans" as
that term is defined in Section 3(3) of ERISA, currently adopted, maintained by,
sponsored in whole or in part by, or  contributed  to by any TheraTx  Company or
Affiliate thereof for the benefit of employees, retirees,  dependents,  spouses,
directors,  independent  contractors,  or other  beneficiaries  and under  which
employees, retirees, dependents, spouses, directors, independent contractors, or
other  beneficiaries  are eligible to  participate  (collectively,  the "TheraTx
Benefit Plans").  Any of the TheraTx Benefit Plans which is an "employee pension
benefit plan," as that term is defined in Section 3(2) of ERISA,  is referred to
herein as a  "TheraTx  ERISA  Plan."  Each  TheraTx  ERISA  Plan which is also a
"defined  benefit  plan" (as defined in Section  414(j) of the Internal  Revenue
Code) is referred to herein as a "TheraTx Pension Plan." No TheraTx Pension Plan
is or has been a  multiemployer  plan  within the  meaning  of Section  3(37) of
ERISA.

                    (b) All TheraTx  Benefit  Plans are in  compliance  with the
applicable  terms of ERISA,  the Internal Revenue Code, and any other applicable
Laws  the  breach  or  violation  of  which  are  reasonably   likely  to  have,
individually  or in the aggregate,  a Material  Adverse Effect on TheraTx.  Each
TheraTx ERISA Plan which is intended to be qualified under Section 401(a) of the
Internal  Revenue  Code has received a favorable  determination  letter from the
Internal Revenue Service,  and TheraTx is not aware of any circumstances  likely
to result in  revocation  of any such  favorable  determination  letter.  To the
Knowledge  of TheraTx,  no TheraTx  Company has  engaged in a  transaction  with
respect to any TheraTx  Benefit Plan that,  assuming the taxable  period of such
transaction expired as of the date hereof,  would subject any TheraTx Company to
a tax or penalty imposed by either Section 4975 of the Internal  Revenue Code or
Section  502(i)  of  ERISA in  amounts  which  are  reasonably  likely  to have,
individually or in the aggregate, a Material Adverse Effect on TheraTx.

                    (c) No  TheraTx  Pension  Plan  has  any  "unfunded  current
liability," as that term is defined in Section  302(d)(8)(A) of ERISA,  based on
actuarial assumptions set forth for such plan's most recent actuarial valuation.
Since the date of the most  recent  actuarial  valuation,  there has been (i) no
material  change in the financial  position of a TheraTx  Pension Plan,  (ii) no
change in the actuarial  assumptions  with respect to any TheraTx  Pension Plan,
and (iii) no increase in benefits under any TheraTx  Pension Plan as a result of
plan amendments or changes in applicable Law which is reasonably likely to have,
individually  or in the  aggregate,  a  Material  Adverse  Effect on  TheraTx or
materially  adversely  affect the funding  status of any such plan.  Neither any
TheraTx  Pension  Plan nor any  "single-employer  plan,"  within the  meaning of
Section  4001(a)(15) of ERISA,  

                                      -18-



currently or formerly  maintained by any TheraTx Company, or the single-employer
plan of any ERISA Affiliate has an "accumulated  funding  deficiency" within the
meaning of Section  412 of the  Internal  Revenue  Code or Section 302 of ERISA,
which is  reasonably  likely to have a Material  Adverse  Effect on TheraTx.  No
TheraTx Company has provided,  or is required to provide,  security to a TheraTx
Pension Plan or to any  single-employer  plan of an ERISA Affiliate  pursuant to
Section 401(a)(29) of the Code.

                    (d) No Liability  under Subtitle C or D of Title IV of ERISA
has been or is expected to be incurred by any TheraTx  Company  with  respect to
any ongoing,  frozen or terminated  single-employer  plan or the single-employer
plan of any ERISA  Affiliate,  which  Liability is  reasonably  likely to have a
Material  Adverse  Effect on  TheraTx.  No  TheraTx  Company  has  incurred  any
withdrawal  Liability with respect to a  multiemployer  plan under Subtitle B of
Title IV of ERISA  (regardless  of whether  based on  contributions  of an ERISA
Affiliate),  which  Liability is  reasonably  likely to have a Material  Adverse
Effect on  TheraTx.  No notice of a  "reportable  event,"  within the meaning of
Section 4043 of ERISA for which the 30-day  reporting  requirement  has not been
waived,  has been  required to be filed for any TheraTx  Pension  Plan or by any
ERISA Affiliate within the 12-month period ending on the date hereof.

                    (e)  Except as  disclosed  in  Section  6.12 of the  TheraTx
Disclosure  Memorandum,  no TheraTx Company has any Liability for retiree health
and life  benefits  under  any of the  TheraTx  Benefit  Plans  and there are no
restrictions  on the rights of such TheraTx  Company to amend or  terminate  any
such Plan  without  incurring  any  Liability  thereunder,  which  Liability  is
reasonably likely to have a Material Adverse Effect on TheraTx.

              6.13  MATERIAL  CONTRACTS.  Except as disclosed in Section 6.13 of
the  TheraTx  Disclosure  Memorandum  or  otherwise  reflected  in  the  TheraTx
Financial Statements, none of the TheraTx Companies, nor any of their respective
Assets,  business, or operations,  is a party to, or is bound or affected by, or
receives  benefits under any other  Contract or amendment  thereto that would be
required to be filed as an exhibit to a Form 10-K filed by TheraTx  with the SEC
as of the  date of this  Agreement  that has not been  filed  as an  exhibit  to
TheraTx's  Form 10-K filed for the  fiscal  year ended  December  31,  1994 (the
"TheraTx  Contracts").  With  respect  to each  TheraTx  Contract  and except as
disclosed in Section 6.13 of the TheraTx Disclosure Memorandum: (i) the Contract
is in full force and effect;  (ii) no TheraTx Company is in Default  thereunder,
other than Defaults which are not reasonably likely to have,  individually or in
the aggregate,  a Material  Adverse Effect on TheraTx;  (iii) no TheraTx Company
has repudiated or waived any material  provision of any such Contract;  and (iv)
no other party to any such Contract is, to the knowledge of TheraTx,  in Default
in any respect,  other than Defaults  which are not  reasonably  likely to have,
individually or in the aggregate,  a Material Adverse Effect on TheraTx,  or has
repudiated or waived any material provision thereunder.

              6.14  LEGAL  PROCEEDINGS.  There is no  Litigation  instituted  or
pending,  or,  to the  Knowledge  of  TheraTx,  threatened  (or  unasserted  but
considered  probable of  assertion  and which if asserted  would have at least a
reasonable  probability of an unfavorable  outcome) against any TheraTx Company,
or against  any Asset,  interest,  or right of any of them,  that is  reasonably
likely to have,  individually or in the aggregate,  a Material Adverse Effect on
TheraTx,  nor  are  there  any  Orders  of  any  Regulatory  Authorities,  other
governmental  authorities,   or  arbitrators  outstanding  against  any  TheraTx
Company, that are reasonably likely to have, individually or in the aggregate, a
Material Adverse Effect on TheraTx.

              6.15  REPORTS.  Subject to the  provisions  of Section 6.4,  since
January 1, 1992, or the date of organization if later,  each TheraTx Company has
filed all reports and  statements,  together with any amendments  required to be
made  with  respect  thereto,  that it was  required  to  file  with  (i)  other
Regulatory  Authorities,  and (ii) any  applicable  state  securities or banking
authorities  (except, in the case of state securities  authorities,  failures to
file which are not reasonably likely to have,  individually or in the aggregate,
a Material  Adverse Effect on TheraTx).  As of their respective  dates,  each of
such reports and documents,  including the financial statements,  exhibits,  and
schedules  thereto,  complied in all material respects with all applicable Laws.
As of its  respective  date,  each such  report  and  document  did not,  in all
material  respects,  contain any untrue  statement of a material 

                                      -19-



fact or omit to state a material fact required to be stated therein or necessary
to make the statements made therein,  in light of the circumstances  under which
they were made, not misleading.

              6.16 STATEMENTS TRUE AND CORRECT. None of the information supplied
or to be supplied by any TheraTx Company or any Affiliate  thereof for inclusion
in the  Registration  Statement to be filed by TheraTx with the SEC, will,  when
the  Registration  Statement  becomes  effective,  be false or  misleading  with
respect to any material  fact, or omit to state any material  fact  necessary to
make the statements therein not misleading.  None of the information supplied or
to be supplied by any TheraTx Company or any Affiliate  thereof for inclusion in
the Proxy Statement to be mailed to Helian's stockholders in connection with the
Stockholders'  Meeting,  and any  other  documents  to be filed  by any  TheraTx
Company or any Affiliate thereof with the SEC or any other Regulatory  Authority
in connection with the transactions contemplated hereby, will, at the respective
time such  documents are filed,  and with respect to the Proxy  Statement,  when
first mailed to the stockholders of Helian,  be false or misleading with respect
to any material  fact, or omit to state any material fact  necessary to make the
statements  therein,  in light of the circumstances  under which they were made,
not misleading,  or, in the case of the Proxy Statement or any amendment thereof
or supplement  thereto,  at the time of the Stockholders'  Meeting,  be false or
misleading with respect to any material fact, or omit to state any material fact
necessary to correct any statement in any earlier  communication with respect to
the solicitation of any proxy for the Stockholders'  Meeting. All documents that
any TheraTx Company or any Affiliate  thereof is responsible for filing with any
Regulatory  Authority in connection with the  transactions  contemplated  hereby
will  comply  as to  form  in all  material  respects  with  the  provisions  of
applicable Law.

              6.17  AUTHORITY OF MERGER SUB.  Merger Sub is a  corporation  duly
organized,  validly existing and in good standing under the Laws of the State of
Delaware as a wholly owned Subsidiary of TheraTx.  The authorized  capital stock
of Merger Sub shall consist of 1,000 shares of Merger Sub Common  Stock,  all of
which is validly issued and  outstanding,  fully paid and  nonassessable  and is
owned by TheraTx free and clear of any Lien.  Merger Sub has the corporate power
and authority  necessary to execute,  deliver and perform its obligations  under
this  Agreement and to consummate  the  transactions  contemplated  hereby.  The
execution,  delivery and  performance of this Agreement and the  consummation of
the transactions  contemplated herein,  including the Merger, have been duly and
validly  authorized by all necessary  corporate action in respect thereof on the
part of Merger  Sub.  This  Agreement  represents  a legal,  valid,  and binding
obligation of Merger Sub,  enforceable against Merger Sub in accordance with its
terms (except in all cases as such  enforceability  may be limited by applicable
bankruptcy,  insolvency,  reorganization,  moratorium, or similar Laws affecting
the enforcement of creditors'  rights generally and except that the availability
of the equitable remedy of specific  performance or injunctive relief is subject
to the discretion of the court before which any proceeding may be brought).

              6.18 ACCOUNTING, TAX AND REGULATORY MATTERS. No TheraTx Company or
any  Affiliate  thereof has taken any action or has any Knowledge of any fact or
circumstance   that  is  reasonably  likely  to  (i)  prevent  the  transactions
contemplated    hereby,    including   the   Merger,    from    qualifying   for
pooling-of-interests  accounting  treatment  or as a  reorganization  within the
meaning of Section  368(a) of the  Internal  Revenue  Code,  or (ii)  materially
impede or delay receipt of any Consents of Regulatory Authorities referred to in
Section  9.1(b) of this  Agreement or result in the imposition of a condition or
restriction of the type referred to in the last sentence of such Section.


                                    ARTICLE 7
                    CONDUCT OF BUSINESS PENDING CONSUMMATION

              7.1  AFFIRMATIVE  COVENANTS  OF  HELIAN.  From  the  date  of this
Agreement  until the earlier of the Effective  Time or the  termination  of this
Agreement,  unless the prior written  consent of the other Party shall have been
obtained,  and except as otherwise expressly  contemplated herein,  Helian shall
and shall cause each of its Subsidiaries to (a) operate its business only in the
usual,   regular,   and  ordinary  course,  (b)  preserve  intact  its  business
organization and Assets and maintain its rights and franchises,  and (c) take no
action which would (i)  adversely  affect the ability of any Party to obtain any
Consents required for the transactions contemplated hereby 

                                      -20-



without  imposition of a condition or restriction of the type referred to in the
last sentences of Section 9.1(b) or 9.1(c) of this Agreement,  or (ii) adversely
affect the ability of any Party to perform its  covenants and  agreements  under
this Agreement.

              7.2 NEGATIVE COVENANTS OF HELIAN.  From the date of this Agreement
until the earlier of the Effective Time or the  termination  of this  Agreement,
Helian  covenants  and  agrees  that it will not do or agree or commit to do, or
permit  any of its  Subsidiaries  to do or agree  or  commit  to do,  any of the
following  without the prior written consent of the chief  executive  officer or
chief  financial  officer of TheraTx,  which consent  shall not be  unreasonably
withheld:

                  (a) amend   the  Certificate  or  Articles  of  Incorporation,
       Bylaws or other governing instruments of any Helian Company, or

                  (b) incur any additional debt  obligation or other  obligation
       for  borrowed  money  (other  than  indebtedness  of a Helian  Company to
       another  Helian  Company) in excess of an  aggregate  of $50,000 (for the
       Helian  Companies on a consolidated  basis) except in the ordinary course
       of the business of Helian Subsidiaries consistent with past practices, or
       impose,  or suffer the imposition,  on any Asset of any Helian Company of
       any Lien or permit any such Lien to exist (other than in connection  with
       Liens in effect as of the date  hereof that are  disclosed  in the Helian
       Disclosure Memorandum); or

                  (c)  repurchase,  redeem,  or  otherwise  acquire or  exchange
       (other than  exchanges in the  ordinary  course  under  employee  benefit
       plans), directly or indirectly, any shares, or any securities convertible
       into any shares,  of the capital stock of any Helian Company,  or declare
       or pay any dividend or make any other distribution in respect of Helian's
       capital stock; or

                  (d) except for this Agreement,  or pursuant to the exercise of
       stock options outstanding as of the date hereof and pursuant to the terms
       thereof in existence on the date hereof,  or pursuant to the Stock Option
       Agreement,  or as  disclosed in Section  7.2(d) of the Helian  Disclosure
       Memorandum,  issue,  sell, pledge,  encumber,  authorize the issuance of,
       enter into any Contract to issue,  sell, pledge,  encumber,  or authorize
       the  issuance  of,  or  otherwise  permit  to  become  outstanding,   any
       additional  shares of Helian  Common Stock or any other  capital stock of
       any Helian  Company,  or any stock  appreciation  rights,  or any option,
       warrant,  conversion,  or other right to acquire  any such stock,  or any
       security convertible into any such stock; or

                  (e) adjust,  split, combine or reclassify any capital stock of
       any  Helian  Company  or issue or  authorize  the  issuance  of any other
       securities in respect of or in  substitution  for shares of Helian Common
       Stock,  or sell,  lease,  mortgage or  otherwise  dispose of or otherwise
       encumber any shares of capital stock of any Helian Subsidiary (unless any
       such shares of stock are sold or otherwise  transferred to another Helian
       Company) or any Asset having a book value in excess of $25,000 other than
       in  the  ordinary   course  of  business  for   reasonable  and  adequate
       consideration; or

                  (f) except for purchases of U.S.  Treasury  securities or U.S.
       Government  agency  securities,  which in either case have  maturities of
       three  years or  less,  purchase  any  securities  or make  any  material
       investment,  either by purchase of stock of securities,  contributions to
       capital, Asset transfers,  or purchase of any Assets, in any Person other
       than a wholly owned Helian  Subsidiary,  or otherwise  acquire  direct or
       indirect  control  over any  Person,  other than in  connection  with the
       creation  of new  wholly  owned  Subsidiaries  organized  to  conduct  or
       continue activities otherwise permitted by this Agreement; or

                  (g) grant any  increase  in  compensation  or  benefits to the
       employees or officers of any Helian  Company,  except in accordance  with
       past  practice  disclosed  in  Section  7.2(g) of the  Helian  Disclosure
       Memorandum or as required by Law; pay any severance or termination pay or
       any bonus other than pursuant to written policies or written Contracts in
       effect on the date of this  Agreement and disclosed in Section  7.2(g) of
       the Helian Disclosure  Memorandum;  and enter into or amend any severance
       agreements  

                                      -21-



       with officers of any Helian Company;  grant any material increase in fees
       or other  increases in compensation or other benefits to directors of any
       Helian  Company  except in  accordance  with past  practice  disclosed in
       Section  7.2(g)  of the  Helian  Disclosure  Memorandum;  or  voluntarily
       accelerate  the  vesting  of  any  stock  options  or  other  stock-based
       compensation or employee benefits; or

                  (h) enter into or amend any  employment  Contract  between any
       Helian  Company and any Person (unless such amendment is required by Law)
       that  the  Helian  Company  does  not  have  the  unconditional  right to
       terminate  without  Liability  (other than Liability for services already
       rendered), at any time on or after the Effective Time;

                  (i) adopt any new employee  benefit plan of any Helian Company
       or make any material change in or to any existing  employee benefit plans
       of any Helian  Company other than any such change that is required by Law
       or that, in the opinion of counsel, is necessary or advisable to maintain
       the tax qualified status of any such plan; or

                  (j)  make  any  significant  change  in any Tax or  accounting
       methods or  systems of  internal  accounting  controls,  except as may be
       appropriate to conform to changes in Tax Laws or GAAP; or

                  (k) commence any Litigation other than in accordance with past
       practice,  settle any  Litigation  involving  any Liability of any Helian
       Company for material money damages or restrictions upon the operations of
       any Helian Company; or

                  (l)  modify,   amend  or  terminate   any  material   Contract
       (including any loan Contract with an unpaid balance exceeding $50,000) or
       waive, release, compromise or assign any material rights or claims.

              7.3 COVENANTS OF THERATX.  From the date of this  Agreement  until
the earlier of the Effective Time or the termination of this Agreement,  TheraTx
covenants  and agrees that it shall (x) continue to conduct its business and the
business of its Subsidiaries in a manner designed in its reasonable judgment, to
enhance  the  long-term  value of the  TheraTx  Common  Stock  and the  business
prospects  of the  TheraTx  Companies,  and (y) take no action  which  would (i)
materially  adversely  affect the  ability  of any Party to obtain any  Consents
required  for the  transactions  contemplated  hereby  without  imposition  of a
condition  or  restriction  of the type  referred  to in the last  sentences  of
Section 9.1(b) or 9.1(c) of this Agreement,  or (ii) materially adversely affect
the  ability of any Party to perform its  covenants  and  agreements  under this
Agreement;  provided,  that the foregoing  shall not prevent any TheraTx Company
from  discontinuing or disposing of any of its Assets or business if such action
is, in the  judgment of  TheraTx,  desirable  in the conduct of the  business of
TheraTx and its Subsidiaries.  TheraTx further covenants and agrees that it will
not, without the prior written consent of the chief executive officer of Helian,
which consent  shall not be  unreasonably  withheld,  amend the  Certificate  of
Incorporation  or Bylaws of TheraTx or the  TheraTx  Rights  Agreement,  in each
case, in any manner adverse to the holders of Helian Common Stock.

              7.4  ADVERSE  CHANGES  IN  CONDITION.  Each  Party  agrees to give
written notice promptly to the other Party upon becoming aware of the occurrence
or impending  occurrence of any event or  circumstance  relating to it or any of
its Subsidiaries which (i) is reasonably likely to have,  individually or in the
aggregate,  a Material  Adverse Effect on it or (ii) would cause or constitute a
material  breach  of  any  of  its  representations,  warranties,  or  covenants
contained  herein,  and to use its reasonable  efforts to prevent or promptly to
remedy the same.

              7.5  REPORTS.  Each  Party  and its  Subsidiaries  shall  file all
reports required to be filed by it with Regulatory  Authorities between the date
of this  Agreement and the  Effective  Time and shall deliver to the other Party
copies of all such  reports  promptly  after the same are  filed.  If  financial
statements  are contained in any such reports filed with the SEC, such financial
statements will fairly present the consolidated financial position of the entity
filing such statements as of the dates indicated and the consolidated results of
operations, changes in stockholders' equity, and cash flows for the periods then
ended  in  accordance  with  GAAP  (subject  in the  case of  interim  financial
statements to normal recurring year-end  adjustments that are not material).  As
of their  respective  dates,  such reports filed with the SEC will comply in all
material  respects  with the  Securities  Laws and will not  

                                      -22-



contain any untrue statement of a material fact or omit to state a material fact
required  to be stated  therein  or  necessary  in order to make the  statements
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.  Any financial  statements contained in any other reports to another
Regulatory  Authority  shall be prepared in accordance  with Laws  applicable to
such reports.


                                    ARTICLE 8
                              ADDITIONAL AGREEMENTS

              8.1 REGISTRATION STATEMENT; PROXY STATEMENT; STOCKHOLDER APPROVAL.
TheraTx  shall  prepare and file the  Registration  Statement  with the SEC, and
shall use its reasonable  efforts to cause the Registration  Statement to become
effective  under the 1933 Act and take any action required to be taken under the
applicable  state Blue Sky or securities Laws in connection with the issuance of
the shares of TheraTx Common Stock upon consummation of the Merger. Helian shall
cooperate in the preparation and filing of the Registration  Statement and shall
furnish all  information  concerning  it and the holders of its capital stock as
TheraTx may  reasonably  request in  connection  with such action.  Helian shall
prepare and file with the SEC the Proxy  Statement.  TheraTx shall  cooperate in
the  preparation  and  filing  of the Proxy  Statement  and  shall  furnish  all
information  concerning it as Helian may reasonably  request in connection  with
such action.  Helian shall call a Stockholders'  Meeting,  to be held as soon as
reasonably practicable after the Registration Statement is declared effective by
the SEC,  for the purpose of voting upon  approval  of this  Agreement  and such
other  related  matters  as  it  deems  appropriate.   In  connection  with  the
Stockholders'  Meeting,  (i)  Helian  shall  mail  the  Proxy  Statement  to its
stockholders as soon as practicable after the Registration Statement is declared
effective by the SEC,  (ii) the Board of  Directors  of Helian  shall  recommend
(subject to compliance with their fiduciary duties as advised by counsel) to its
stockholders the approval of this Agreement, and (iv) the Board of Directors and
officers of Helian shall (subject to compliance with their  fiduciary  duties as
advised by counsel) use their  reasonable  efforts to obtain such  stockholders'
approval.  TheraTx and Helian shall make all  necessary  filings with respect to
the  Merger  under the  Securities  Act and the  Exchange  Act and the rules and
regulations thereunder.

              8.2 EXCHANGE LISTING.  TheraTx shall use its reasonable efforts to
list,  prior to the Effective  Time, on the Nasdaq National Market the shares of
TheraTx Common Stock to be issued to the holders of Helian Common Stock pursuant
to the Merger.

              8.3 APPLICATIONS;  ANTITRUST NOTIFICATION.  TheraTx shall promptly
prepare and file,  and Helian shall  cooperate  in the  preparation  and,  where
appropriate,  filing of,  applications  with all Regulatory  Authorities  having
jurisdiction  over the transactions  contemplated by this Agreement  seeking the
requisite Consents necessary to consummate the transactions contemplated by this
Agreement.  To the extent  required  by the HSR Act,  each of the  Parties  will
promptly file with the United States  Federal  Trade  Commission  and the United
States  Department of Justice the  notification and report form required for the
transactions  contemplated hereby and any supplemental or additional information
which may  reasonably be requested in connection  therewith  pursuant to the HSR
Act and will comply in all material  respects with the  requirements  of the HSR
Act.

              8.4 FILINGS WITH STATE OFFICES.  Upon the terms and subject to the
conditions of this  Agreement,  Helian shall execute and file the Certificate of
Merger with the Secretary of State of the State of Delaware in  connection  with
the Closing.

              8.5  AGREEMENT AS TO EFFORTS TO  CONSUMMATE.  Subject to the terms
and  conditions  of this  Agreement,  each Party agrees to use, and to cause its
Subsidiaries to use, its reasonable  efforts to take, or cause to be taken,  all
actions,  and to do,  or cause to be done,  all  things  necessary,  proper,  or
advisable under  applicable  Laws to consummate and make  effective,  as soon as
practicable after the date of this Agreement,  the transactions  contemplated by
this Agreement,  including  using its reasonable  efforts to lift or rescind any
Order   adversely   affecting  its  ability  to  consummate   the   transactions
contemplated  herein and to cause to be satisfied the conditions  referred to in
Article 9 of this Agreement; provided, that nothing herein shall preclude either
Party from  exercising  its  rights  under this  Agreement  or the Stock  Option
Agreement.  Each Party shall use,  and shall cause each of its  

                                      -23-



Subsidiaries to use, its reasonable  efforts to obtain all Consents necessary or
desirable  for  the  consummation  of  the  transactions  contemplated  by  this
Agreement.

              8.6   INVESTIGATION AND CONFIDENTIALITY.

                    (a) Prior to the Effective  Time,  each Party shall keep the
other Party advised of all material developments relevant to its business and to
consummation  of the Merger and shall permit the other Party to make or cause to
be  made  such  investigation  of the  business  and  properties  of it and  its
Subsidiaries and of their respective financial and legal conditions as the other
Party reasonably requests,  provided that such investigation shall be reasonably
related  to  the  transactions  contemplated  hereby  and  shall  not  interfere
unnecessarily with normal  operations.  No investigation by a Party shall affect
the representations and warranties of the other Party.

                    (b) Each  Party  shall,  and shall  cause its  advisers  and
agents  to,  maintain  the  confidentiality  of  all  confidential   information
furnished  to it by  the  other  Party  concerning  its  and  its  Subsidiaries'
businesses,   operations,  and  financial  positions  and  shall  not  use  such
information   for  any  purpose  except  in  furtherance  of  the   transactions
contemplated  by this  Agreement.  If this Agreement is terminated  prior to the
Effective  Time,  each Party shall promptly return or certify the destruction of
all documents and copies thereof,  and all work papers  containing  confidential
information received from the other Party.

                    (c) Helian shall use its reasonable  efforts to exercise its
rights under  confidentiality  agreements  entered into with Persons  which were
considering   an   Acquisition   Transaction   with  Helian  to   preserve   the
confidentiality  of the information  relating to Helian provided to such Persons
and their Affiliates and Representatives.

                    (d) Each Party agrees to give the other Party notice as soon
as practicable after any determination by it of any fact or occurrence  relating
to  the  other  Party  which  it  has  discovered  through  the  course  of  its
investigation and which represents, or is reasonably likely to represent, either
a material breach of any representation,  warranty, covenant or agreement of the
other Party or which has had or is reasonably  likely to have a Material Adverse
Effect on the other Party.

              8.7  PRESS  RELEASES.  Prior to the  Effective  Time,  Helian  and
TheraTx  shall consult with each other as to the form and substance of any press
release or other public disclosure  materially  related to this Agreement or any
other transaction  contemplated hereby;  provided,  that nothing in this Section
8.7 shall be deemed to prohibit any Party from making any  disclosure  which its
counsel deems necessary or advisable in order to satisfy such Party's disclosure
obligations imposed by Law.

              8.8 CERTAIN ACTIONS. Except with respect to this Agreement and the
transactions  contemplated  hereby,  no Helian Company nor any Affiliate thereof
nor any Representatives thereof retained by any Helian Company shall directly or
indirectly solicit any Acquisition Proposal by any Person.  Except to the extent
necessary to comply with the fiduciary  duties of Helian's Board of Directors as
advised by counsel, no Helian Company or any Affiliate or Representative thereof
shall furnish any  non-public  information  that it is not legally  obligated to
furnish,  negotiate with respect to, or enter into any Contract with respect to,
any Acquisition Proposal,  but Helian may communicate  information about such an
Acquisition  Proposal  to its  stockholders  if and to  the  extent  that  it is
required  to do so in order to comply with its legal  obligations  as advised by
counsel. Helian shall promptly notify TheraTx orally and in writing in the event
that it  receives  any inquiry or  proposal  relating  to any such  transaction.
Helian  shall (i)  immediately  cease and cause to be  terminated  any  existing
activities,  discussions or negotiations with any Persons  conducted  heretofore
with  respect to any of the  foregoing,  and (ii) direct and use its  reasonable
efforts  to  cause  all  of its  Representatives  not  to  engage  in any of the
foregoing.

              8.9 ACCOUNTING AND TAX TREATMENT.  Each of the Parties  undertakes
and agrees to use its  reasonable  efforts to cause the  Merger,  and to take no
action  which would  cause the Merger  not, to qualify for  pooling-of-interests
accounting  treatment and treatment as a "reorganization"  within the meaning of
Section 368(a) of the Internal Revenue Code for federal income tax purposes.

                                      -24-



              8.10 STATE  TAKEOVER  LAWS.  Each  Helian  Company  shall take all
necessary steps to exempt the transactions  contemplated by this Agreement from,
or if necessary challenge the validity or applicability of, any applicable state
takeover Law, including Section 203 of the DGCL.

              8.11  CHARTER  PROVISIONS.  Each  Helian  Company  shall  take all
necessary  action to ensure that the  entering  into of this  Agreement  and the
consummation of the Merger and the other transactions contemplated hereby do not
and will not result in the grant of any rights to any Person  under the Articles
or Certificate of  Incorporation,  Bylaws or other governing  instruments of any
Helian  Company  or  restrict  or impair  the  ability  of TheraTx or any of its
Subsidiaries to vote, or otherwise to exercise the rights of a stockholder  with
respect to,  shares of any Helian  Company  that may be  directly or  indirectly
acquired or controlled by it.

              8.12 AGREEMENT OF AFFILIATES. Helian has disclosed in Section 8.12
of the Helian Disclosure  Memorandum all Persons whom it reasonably  believes is
an  "affiliate"  of Helian for  purposes of Rule 145 under the 1933 Act.  Helian
shall use its reasonable efforts to cause each such Person to deliver to TheraTx
not later than 30 days after the date of this  Agreement,  a written  agreement,
substantially  in the form of Exhibit 3,  providing  that such  Person  will not
sell,  pledge,  transfer,  or otherwise  dispose of the shares of Helian  Common
Stock held by such Person except as  contemplated  by such  agreement or by this
Agreement  and will not sell,  pledge,  transfer,  or  otherwise  dispose of the
shares of TheraTx  Common Stock to be received by such Person upon  consummation
of the Merger except in compliance  with  applicable  provisions of the 1933 Act
and the rules  and  regulations  thereunder  and  until  such time as  financial
results  covering at least 30 days of combined  operations of TheraTx and Helian
have  been  published  within  the  meaning  of  Section  201.01  of  the  SEC's
Codification  of Financial  Reporting  Policies.  If the Merger will qualify for
pooling-of-interests accounting treatment, shares of TheraTx Common Stock issued
to such affiliates of Helian in exchange for shares of Helian Common Stock shall
not be transferable  until such time as financial  results  covering at least 30
days of combined operations of TheraTx and Helian have been published within the
meaning of  Section  201.01 of the SEC's  Codification  of  Financial  Reporting
Policies,  regardless  of whether each such  affiliate  has provided the written
agreement  referred to in this Section  8.12 (and  TheraTx  shall be entitled to
place  restrictive  legends upon certificates for shares of TheraTx Common Stock
issued to  affiliates  of Helian  pursuant  to this  Agreement  to  enforce  the
provisions of this Section 8.12).  TheraTx shall not be required to maintain the
effectiveness of the Registration  Statement under the 1933 Act for the purposes
of resale of TheraTx Common Stock by such affiliates.

              8.13   EMPLOYEE   BENEFITS   AND   CONTRACTS.   For   purposes  of
participation  and vesting under employee benefit plans of TheraTx,  the service
of the employees of the Helian  Companies  prior to the Effective  Time shall be
treated as service with a TheraTx Company participating in such employee benefit
plans.  TheraTx also shall cause the Surviving  Corporation and its Subsidiaries
to honor in accordance  with their terms all employment,  severance,  consulting
and  other  compensation  Contracts  disclosed  in  Section  8.13 of the  Helian
Disclosure  Memorandum to TheraTx  between any Helian Company and any current or
former director,  officer,  or employee  thereof,  and all provisions for vested
benefits or other vested  amounts  earned or accrued  through the Effective Time
under the Helian Benefit Plans.

              8.14  INDEMNIFICATION.

                    (a) For a period of six  years  after  the  Effective  Time,
TheraTx shall, and shall cause the Surviving  Corporation to, indemnify,  defend
and hold  harmless the present and former  directors,  officers,  employees  and
agents of the Helian  Companies  (each,  an  "Indemnified  Party")  against  all
Liabilities  arising out of actions or  omissions  occurring  at or prior to the
Effective Time  (including the  transactions  contemplated by this Agreement) to
the full extent  permitted  under  Delaware Law and by Helian's  Certificate  of
Incorporation and Bylaws as in effect on the date hereof,  including  provisions
relating  to advances  of  expenses  incurred in the defense of any  Litigation.
Without  limiting the foregoing,  in any case in which approval by the Surviving
Corporation is required to effectuate any  indemnification,  TheraTx shall cause
the Surviving  Corporation to direct, at the election of the Indemnified  Party,
that the determination of any such approval shall be made by independent counsel
mutually agreed upon between TheraTx and the Indemnified Party.

                                      -25-



                    (b) TheraTx shall, or shall cause the Surviving  Corporation
to,  use its  reasonable  efforts  (and  Helian  shall  cooperate  prior  to the
Effective Time in these efforts) to maintain in effect for a period of six years
after the Effective Time Helian's  existing  directors' and officers'  liability
insurance policy (provided that TheraTx may substitute  therefor (i) policies of
at least the same coverage and amounts containing terms and conditions which are
substantially  no less  advantageous  or (ii) with the  consent of Helian  given
prior to the Effective  Time,  any other policy) with respect to claims  arising
from facts or events which  occurred  prior to the  Effective  Time and covering
persons who are  currently  covered by such  insurance;  provided,  that neither
TheraTx nor the Surviving  Corporation  shall be obligated to make total premium
payments  for such  six-year  period in  respect  of such  policy  (or  coverage
replacing  such  policy)  which  exceed,  for the  portion  related to  Helian's
directors and officers,  150% of the annual premium payments on Helian's current
policy in effect as of the date of this Agreement (the "Maximum Amount"). If the
amount of the premiums  necessary to maintain or procure such insurance coverage
exceeds the Maximum Amount, TheraTx shall use its reasonable efforts to maintain
the most advantageous  policies of directors' and officers'  liability insurance
obtainable for a premium equal to the Maximum Amount.

                    (c) Any Indemnified  Party wishing to claim  indemnification
under paragraph (a) of this Section 8.14, upon learning of any such Liability or
Litigation,  shall  promptly  notify TheraTx  thereof.  In the event of any such
Litigation  (whether arising before or after the Effective Time), (i) TheraTx or
the Surviving Corporation shall have the right to assume the defense thereof and
TheraTx shall not be liable to such  Indemnified  Parties for any legal expenses
of other counsel or any other expenses subsequently incurred by such Indemnified
Parties in connection  with the defense  thereof,  except that if TheraTx or the
Surviving  Corporation  elects not to assume  such  defense  or counsel  for the
Indemnified  Parties  advises  that there are  substantive  issues  which  raise
conflicts  of interest  between  TheraTx or the  Surviving  Corporation  and the
Indemnified  Parties, the Indemnified Parties may retain counsel satisfactory to
them, and TheraTx or the Surviving Corporation shall pay all reasonable fees and
expenses of such  counsel for the  Indemnified  Parties  promptly as  statements
therefor are received;  provided,  that TheraTx  shall be obligated  pursuant to
this  paragraph  (c) to pay for  only one firm of  counsel  for all  Indemnified
Parties in any jurisdiction,  (ii) the Indemnified Parties will cooperate in the
defense of any such  Litigation,  and (iii)  TheraTx shall not be liable for any
settlement effected without its prior written consent; and provided further that
the  Surviving  Corporation  shall  not have  any  obligation  hereunder  to any
Indemnified Party when and if a court of competent jurisdiction shall determine,
and such determination shall have become final, that the indemnification of such
Indemnified Party in the manner  contemplated hereby is prohibited by applicable
Law.

                    (d) If the Surviving Corporation or any of its successors or
assigns shall  consolidate  with or merge into any other Person and shall not be
the  continuing  or surviving  Person of such  consolidation  or merger or shall
transfer all or substantially all of its assets to any Person,  then and in each
case,  proper  provision shall be made so that the successors and assigns of the
Surviving  Corporation  shall assume the  obligations  set forth in this Section
8.14.

                    (e) The  provisions  of this Section 8.14 are intended to be
for the benefit of and shall be enforceable by, each  Indemnified  Party, his or
her heirs and representatives.

              8.15  STOCK PLANS.

                    (a) As soon as practicable after the Effective Time, TheraTx
shall  deliver to the  participants  in the Helian  Option  Plan an  appropriate
notice setting forth such  participant's  rights pursuant thereto and the grants
pursuant to the Helian  Option  Plan shall  continue in effect on the same terms
and conditions (subject to the adjustments  required by Section 3.5 after giving
effect to the  Merger),  and TheraTx  shall  comply with the terms of the Helian
Option Plan to ensure,  to the extent required by, and subject to the provisions
of, the Helian  Option  Plan,  that Helian  Stock  Options  which  qualified  as
incentive  stock  options  prior to the  Effective  Time  continue to qualify as
incentive stock options after the Effective Time.

                    (b) Helian shall take actions as are  necessary to cause the
"Purchase  Date" (as such term is used in the Helian ESPP applicable to the then
current  Offering  Period (as such term is used in the  Helian  ESPP)) 

                                      -26-



to be the last  trading  day on which the Helian  Common  Stock is traded on the
NASDAQ  National  Market  immediately  prior to the  Effective  Time (the "Final
Helian Purchase Date"); provided, that, such change in the Purchase Date, Helian
shall apply the funds credited as of such date under the Helian ESPP within each
participant's  payroll  withholdings  account to the purchase of whole shares of
Helian Common Stock in accordance with the terms of the Helian ESPP.

                    (c) TheraTx  shall take all  corporate  action  necessary to
reserve for issuance a sufficient  number of shares of TheraTx  Common Stock for
delivery  under each  Helian  Option Plan  assumed in  accordance  with  Section
3.5(a).  As soon as practicable  after the Effective Time,  TheraTx shall file a
registration  statement  on Form  S-3 or Form  S-8,  as the  case may be (or any
successor or other appropriate  forms), or another appropriate form with respect
to the shares of Helian  Common Stock subject to such options (if any) and shall
use its  best  efforts  to  maintain  the  effectiveness  of  such  registration
statement or  registration  statements  (and maintain the current  status of the
prospectus or prospectuses contained therein) for so long as such options remain
outstanding. With respect to those individuals who subsequent to the Merger will
be subject to the  reporting  requirements  under  Section 16(a) of the Exchange
Act, where  applicable,  TheraTx shall administer the Helian Option Plan assumed
pursuant to Section 3.5 in a manner that  complies  with Rule 16b-3  promulgated
under the Exchange Act to the extent the Helian  Option Plan  complied with such
rule prior to the Merger.


                                    ARTICLE 9
                CONDITIONS PRECEDENT TO OBLIGATIONS TO CONSUMMATE

              9.1  CONDITIONS  TO  OBLIGATIONS  OF EACH  PARTY.  The  respective
obligations  of each Party to perform this  Agreement and  consummate the Merger
and the other transactions  contemplated  hereby are subject to the satisfaction
of the following  conditions,  unless waived by both Parties pursuant to Section
11.6 of this Agreement:

                  (a)  STOCKHOLDER  APPROVAL.  The  stockholders of Helian shall
       have approved this Agreement,  and the  consummation of the  transactions
       contemplated hereby,  including the Merger, as and to the extent required
       by Law, by the provisions of any governing  instruments,  or by the rules
       of the NASD.

                  (b)  REGULATORY  APPROVALS.   All  Consents  of,  filings  and
       registrations  with, and  notifications  to, all  Regulatory  Authorities
       required for  consummation of the Merger shall have been obtained or made
       and shall be in full force and effect and all waiting periods required by
       Law shall have expired. No Consent obtained from any Regulatory Authority
       which is necessary to consummate  the  transactions  contemplated  hereby
       shall be  conditioned or restricted in a manner  (including  requirements
       relating  to the  raising of  additional  capital or the  disposition  of
       Assets)  which in the  reasonable  judgment of the Board of  Directors of
       TheraTx  would so  materially  adversely  impact the economic or business
       benefits of the  transactions  contemplated  by this Agreement  that, had
       such  condition or requirement  been known,  such Party would not, in its
       reasonable judgment, have entered into this Agreement.

                  (c) CONSENTS AND APPROVALS. Each Party shall have obtained any
       and all Consents  required  for  consummation  of the Merger  (other than
       those  referred  to in  Section  9.1(b)  of  this  Agreement)  or for the
       preventing  of any  Default  under any  Contract  or Permit of such Party
       which,   if  not  obtained  or  made,  is  reasonably   likely  to  have,
       individually  or in the  aggregate,  a  Material  Adverse  Effect on such
       Party.  No Consent so  obtained  which is  necessary  to  consummate  the
       transactions  contemplated hereby shall be conditioned or restricted in a
       manner  which in the  reasonable  judgment of the Board of  Directors  of
       TheraTx  would so  materially  adversely  impact the economic or business
       benefits of the  transactions  contemplated  by this Agreement  that, had
       such  condition or requirement  been known,  such Party would not, in its
       reasonable judgment, have entered into this Agreement.

                  (d) LEGAL PROCEEDINGS.  No court or governmental or regulatory
       authority  of  competent   jurisdiction   shall  have  enacted,   issued,
       promulgated,  enforced  or entered any Law or Order  (whether  

                                      -27-



       temporary,  preliminary  or  permanent)  or taken any other  action which
       prohibits,  restricts or makes illegal  consummation of the  transactions
       contemplated by this Agreement.

                  (e) REGISTRATION  STATEMENT.  The Registration Statement shall
       be  effective  under  the  1933  Act,  no  stop  orders   suspending  the
       effectiveness  of the Registration  Statement shall have been issued,  no
       action,  suit,  proceeding  or  investigation  by the SEC to suspend  the
       effectiveness  thereof shall have been initiated and be  continuing,  and
       all necessary  approvals  under state  securities Laws or the 1933 Act or
       1934 Act  relating  to the  issuance  or trading of the shares of TheraTx
       Common Stock issuable pursuant to the Merger shall have been received.

                  (f) EXCHANGE  LISTING.  The  shares  of  TheraTx  Common Stock
       issuable  pursuant  to the Merger shall have been approved for listing on
       the Nasdaq National Market.

                  (g) TAX  MATTERS.  Each Party  shall  have  received a written
       opinion of counsel from Alston & Bird, in form reasonably satisfactory to
       such Parties (the "Tax Opinion"),  to the effect that (i) the Merger will
       constitute a  reorganization  within the meaning of Section 368(a) of the
       Internal  Revenue Code,  (ii) the exchange in the Merger of Helian Common
       Stock for TheraTx  Common Stock will not give rise to gain or loss to the
       stockholders  of Helian  with  respect  to such  exchange  (except to the
       extent of any cash  received),  and (iii) none of  Helian,  Merger Sub or
       TheraTx  will  recognize  gain  or loss as a  consequence  of the  Merger
       (except for amounts  resulting  from any  required  change in  accounting
       methods and any income and deferred gain recognized  pursuant to Treasury
       regulations  issued under Section 1502 of the Internal  Revenue Code). In
       rendering  such Tax Opinion,  such counsel shall be entitled to rely upon
       representations of officers of Helian and TheraTx reasonably satisfactory
       in form and substance to such counsel.

              9.2  CONDITIONS TO  OBLIGATIONS  OF THERATX.  The  obligations  of
TheraTx  to  perform  this  Agreement  and  consummate  the Merger and the other
transactions  contemplated  hereby  are  subject  to  the  satisfaction  of  the
following  conditions,  unless waived by TheraTx  pursuant to Section 11.6(a) of
this Agreement:

                  (a)  REPRESENTATIONS  AND  WARRANTIES.  For  purposes  of this
       Section  9.2(a),  the accuracy of the  representations  and warranties of
       Helian set forth in this  Agreement  shall be  assessed as of the date of
       this  Agreement  and as of the  Effective  Time  with the same  effect as
       though all such representations and warranties had been made on and as of
       the Effective Time (provided that  representations  and warranties  which
       are confined to a specified  date shall speak only as of such date).  The
       representations and warranties of Helian set forth in Section 5.3 of this
       Agreement shall be true and correct (except for inaccuracies which are de
       minimus in amount).  The  representations  and  warranties  of Helian set
       forth in Sections 5.19,  5.20,  and 5.21 of this Agreement  shall be true
       and correct in all material respects.  There shall not exist inaccuracies
       in the  representations  and  warranties  of  Helian  set  forth  in this
       Agreement  (including  the  representations  and  warranties set forth in
       Sections 5.3,  5.19,  5.20,  and 5.21) such that the aggregate  effect of
       such  inaccuracies  has,  or is  reasonably  likely to have,  a  Material
       Adverse  Effect on Helian;  provided  that, for purposes of this sentence
       only,  those  representations  and  warranties  which  are  qualified  by
       references to "material" or "Material Adverse Effect" shall be deemed not
       to include such qualifications.

                  (b)  PERFORMANCE OF AGREEMENTS AND COVENANTS.  Each and all of
       the  agreements and covenants of Helian to be performed and complied with
       pursuant to this Agreement and the other agreements  contemplated  hereby
       prior to the Effective  Time shall have been duly  performed and complied
       with in all material respects.

                  (c) CERTIFICATES. Helian shall have delivered to TheraTx (i) a
       certificate,  dated as of the Effective  Time and signed on its behalf by
       its chief  executive  officer to the effect  that the  conditions  of its
       obligations set forth in Section 9.2(a) and 9.2(b) of this Agreement have
       been satisfied,  and (ii) certified copies of resolutions duly adopted by
       Helian's Board of Directors and stockholders evidencing the taking of all
       corporate  action  necessary to  authorize  the  execution,  delivery and
       performance of this Agreement,  and 

                                      -28-



       the consummation of the  transactions  contemplated  hereby,  all in such
       reasonable detail as TheraTx and its counsel shall request.

                  (d) OPINION OF COUNSEL. TheraTx shall have received an opinion
       of Gray Cary  Ware &  Freidenrich,  counsel  to  Helian,  dated as of the
       Closing,  in form reasonably  satisfactory to TheraTx,  as to the matters
       set forth in Exhibit 4.

                  (e)  ACCOUNTANT'S  LETTERS.  TheraTx  shall have received from
       independent  auditors reasonably  acceptable to TheraTx letters dated not
       more than five days prior to (i) the date of the Proxy Statement and (ii)
       the  Effective  Time,  with  respect  to  certain  financial  information
       regarding  Helian,  in form  and  substance  reasonably  satisfactory  to
       TheraTx, which letters shall be based upon customary specified procedures
       undertaken by such firm in accordance with Statement of Auditing Standard
       No. 72.

                  (f)  AFFILIATES  AGREEMENTS.  TheraTx shall have received from
       each  affiliate of Helian the  affiliates  letter  referred to in Section
       8.12  of  this  Agreement,  to the  extent  necessary  to  assure  in the
       reasonable judgment of TheraTx that the transactions  contemplated hereby
       will qualify for pooling-of-interests accounting treatment.

                  (g) POOLING LETTERS.  TheraTx shall have received (i) letters,
       dated as of the date of the filing of the Registration Statement with the
       SEC and as of the  Effective  Time,  in  form  and  substance  reasonably
       acceptable  to  TheraTx,  from Ernst & Young LLP to the  effect  that the
       Merger will qualify for  pooling-of-interests  accounting treatment,  and
       (ii)  letters,  dated as of a date not later than ten (10) days after the
       date of this Agreement,  as of the date of the filing of the Registration
       Statement  with  the  SEC  and as of the  Effective  Time,  in  form  and
       substance reasonably acceptable to TheraTx, from Coopers & Lybrand L.L.P.
       to the  effect  that such firm is not aware of any  matters  relating  to
       Helian  and  its  Subsidiaries  which  would  preclude  the  Merger  from
       qualifying for pooling-of-interests accounting treatment.

                  (h)  RESIGNATIONS.  TheraTx  shall have  received  the written
       resignation of each director and officer of Helian, in form and substance
       reasonably acceptable to TheraTx.

              9.3 CONDITIONS TO OBLIGATIONS OF HELIAN. The obligations of Helian
to perform this Agreement and  consummate the Merger and the other  transactions
contemplated hereby are subject to the satisfaction of the following conditions,
unless waived by Helian pursuant to Section 11.6(b) of this Agreement:

                  (a)  REPRESENTATIONS  AND  WARRANTIES.  For  purposes  of this
       Section  9.3(a),  the accuracy of the  representations  and warranties of
       TheraTx set forth in this  Agreement  shall be assessed as of the date of
       this  Agreement  and as of the  Effective  Time  with the same  effect as
       though all such representations and warranties had been made on and as of
       the Effective Time (provided that  representations  and warranties  which
       are confined to a specified  date shall speak only as of such date).  The
       representations  and  warranties  of TheraTx  set forth in Section 6.3 of
       this Agreement shall be true and correct (except for  inaccuracies  which
       are de minimus in amount).  The representations and warranties of TheraTx
       set forth in Sections 6.17 and 6.18 of this  Agreement  shall be true and
       correct in all material  respects.  There shall not exist inaccuracies in
       the representations and warranties of TheraTx set forth in this Agreement
       (including the  representations and warranties set forth in Sections 6.17
       and 6.18) such that the aggregate effect of such  inaccuracies has, or is
       reasonably likely to have, a Material Adverse Effect on TheraTx; provided
       that,  for purposes of this  sentence  only,  those  representations  and
       warranties  which are  qualified by references to "material" or "Material
       Adverse Effect" shall be deemed not to include such qualifications.

                  (b)  PERFORMANCE OF AGREEMENTS AND COVENANTS.  Each and all of
       the agreements and covenants of TheraTx to be performed and complied with
       pursuant to this Agreement and the other agreements  contemplated  hereby
       prior to the Effective  Time shall have been duly  performed and complied
       with in all material respects.

                                      -29-



                  (c) CERTIFICATES. TheraTx shall have delivered to Helian (i) a
       certificate,  dated as of the Effective  Time and signed on its behalf by
       its chief  executive  officer,  to the effect that the  conditions of its
       obligations set forth in Section 9.3(a) and 9.3(b) of this Agreement have
       been satisfied,  and (ii) certified copies of resolutions duly adopted by
       TheraTx's  Board of Directors  and Merger  Sub's Board of  Directors  and
       stockholders  evidencing the taking of all corporate  action necessary to
       authorize the execution,  delivery and performance of this Agreement, and
       the consummation of the  transactions  contemplated  hereby,  all in such
       reasonable detail as Helian and its counsel shall request.

                  (d) OPINION OF COUNSEL.  Helian shall have received an opinion
       of Alston & Bird, counsel to TheraTx,  dated as of the Effective Time, in
       form  reasonably  acceptable  to Helian,  as to the  matters set forth in
       Exhibit 5.


                                   ARTICLE 10
                                   TERMINATION

              10.1  TERMINATION.  Notwithstanding  any other  provision  of this
Agreement,   and   notwithstanding   the  approval  of  this  Agreement  by  the
stockholders  of  Helian,  this  Agreement  may be  terminated  and  the  Merger
abandoned at any time prior to the Effective Time:

                  (a) By mutual consent of the Board of Directors of TheraTx and
       the Board of Directors of Helian; or

                  (b) By the Board of Directors of either Party  (provided  that
       the   terminating   Party  is  not  then  in   material   breach  of  any
       representation,  warranty, covenant, or other agreement contained in this
       Agreement)  in  the  event  of an  inaccuracy  of any  representation  or
       warranty  contained in this  Agreement of the other Party which cannot be
       or has not been cured  within 30 days after the giving of written  notice
       to such Party of such inaccuracy and which  inaccuracy  would provide the
       other  Party the  ability to refuse to  consummate  the Merger  under the
       applicable  standard set forth in Section 9.2(a) of this Agreement in the
       case of  Helian  and  Section  9.3(a)  of this  Agreement  in the case of
       TheraTx; or

                  (c) By the Board of Directors of either Party  (provided  that
       the   terminating   Party  is  not  then  in   material   breach  of  any
       representation,  warranty, covenant, or other agreement contained in this
       Agreement)  in the event of a material  breach by the other  Party of any
       covenant or agreement  contained in this Agreement which cannot be or has
       not been cured  within 30 days after the giving of written  notice to the
       breaching Party of such breach; or

                  (d) By the Board of Directors of either Party  (provided  that
       the   terminating   Party  is  not  then  in   material   breach  of  any
       representation,  warranty, covenant, or other agreement contained in this
       Agreement)  in the  event (i) any  Consent  of any  Regulatory  Authority
       required  for  consummation  of the  Merger  and the  other  transactions
       contemplated hereby shall have been denied by final nonappealable  action
       of  such  authority  or if any  action  taken  by such  authority  is not
       appealed  within the time limit for appeal,  or (ii) the  stockholders of
       Helian fail to vote their approval of this Agreement and the transactions
       contemplated  hereby as required by the DGCL and the rules of the NASD at
       the  Stockholders'  Meeting where the transactions were presented to such
       stockholders for approval and voted upon; or

                  (e) By the Board of  Directors  of  either  Party in the event
       that the Merger shall not have been consummated by March 31, 1996, if the
       failure to consummate the transactions  contemplated  hereby on or before
       such date is not caused by any willful  breach of this  Agreement  by the
       Party electing to terminate pursuant to this Section 10.1(e); or

                  (f) By the Board of Directors of either Party  (provided  that
       the   terminating   Party  is  not  then  in   material   breach  of  any
       representation,  warranty, covenant, or other agreement contained in this

                                      -30-


       Agreement)  in the  event  that any of the  conditions  precedent  to the
       obligations of such Party to consummate the Merger cannot be satisfied or
       fulfilled by the date specified in Section 10.1(e) of this Agreement;

                  (g) By the Board of Directors of Helian  (provided that Helian
       is not then in material breach of any representation, warranty, covenant,
       or other  agreement  contained in this  Agreement)  in the event that the
       Board  of  Directors  of  Helian  shall  have  affirmed,  recommended  or
       authorized  entering  into  any  other  Acquisition   Proposal  or  other
       transaction involving a merger, share exchange, consolidation or transfer
       of substantially all of the Assets of Helian;

                  (h) By the Board of Directors of Helian  (provided that Helian
       is not then in material breach of any representation, warranty, covenant,
       or other agreement contained in this Agreement) within two (2) days after
       close of the Measurement Period in the event that the Base Period Trading
       Price is less than $12.25;

                  (i) By TheraTx, if either a "Purchase Event" or a "Preliminary
       Purchase Event," as such terms are defined in the Stock Option Agreement,
       shall have occurred; or

                  (j) By TheraTx,  if, prior to 8:00 a.m. Eastern Time on August
       30, 1995, Helian does not execute and deliver to TheraTx the Stock Option
       Agreement  or Helian  does not  deliver to TheraTx  executed  Stockholder
       Agreements in accordance with Section 1.5.

              10.2 EFFECT OF  TERMINATION.  In the event of the  termination and
abandonment of this Agreement  pursuant to Section 10.1 of this Agreement,  this
Agreement  shall become void and have no effect,  except that (i) the provisions
of this Section 10.2 and Article 11 and Section 8.6(b) of this  Agreement  shall
survive any such termination and abandonment, and (ii) a termination pursuant to
Sections  10.1(b),  10.1(c) or 10.1(f) of this  Agreement  shall not relieve the
breaching   Party  from   Liability   for  an  uncured   willful   breach  of  a
representation,   warranty,   covenant,   or  agreement   giving  rise  to  such
termination.  The Stock Option Agreement and each Stockholder Agreement shall be
governed by its own terms as to its termination.

              10.3 NON-SURVIVAL OF REPRESENTATIONS AND COVENANTS. The respective
representations,  warranties,  obligations,  covenants,  and  agreements  of the
Parties  shall not survive the  Effective  Time  except  this  Section  10.3 and
Articles 2, 3, 4 and 11 and Sections 8.12 and 8.14 of this Agreement.


                                   ARTICLE 11
                                  MISCELLANEOUS

              11.1  Definitions.

                    (a) Except as otherwise  provided  herein,  the  capitalized
terms set forth below shall have the following meanings:

                  "ACQUISITION  PROPOSAL" with respect to a Party shall mean any
       tender offer or exchange offer or any proposal for a merger,  acquisition
       of all of the stock or assets of, or other business combination involving
       such Party or any of its Subsidiaries or the acquisition of a substantial
       equity interest in, or a substantial portion of the assets of, such Party
       or any of its Subsidiaries.

                  "AFFILIATE"  of a Person  shall  mean:  (i) any  other  Person
       directly, or indirectly through one or more intermediaries,  controlling,
       controlled by or under common control with such Person; (ii) any officer,
       director,  partner,  employer,  or direct or indirect beneficial owner of
       any 10% or greater equity or voting interest of such Person; or (iii) any
       other Person for which a Person described in clause (ii) acts in any such
       capacity.

                                      -31-



                  "AGREEMENT"  shall  mean this  Agreement  and Plan of  Merger,
       including  the Stock Option  Agreement and the other  Exhibits  delivered
       pursuant hereto and incorporated herein by reference.

                  "ASSETS" of a Person shall mean all of the assets, properties,
       businesses and rights of such Person of every kind, nature, character and
       description,  whether real,  personal or mixed,  tangible or  intangible,
       accrued or  contingent,  or  otherwise  relating  to or  utilized in such
       Person's business,  directly or indirectly,  in whole or in part, whether
       or not  carried on the books and records of such  Person,  and whether or
       not owned in the name of such Person or any  Affiliate of such Person and
       wherever located.

                  "CERTIFICATE  OF MERGER" shall mean the  Certificate of Merger
       to be  executed  by Helian and filed with the  Secretary  of State of the
       State of Delaware  relating to the Merger as  contemplated by Section 1.1
       of this Agreement.

                  "CLOSING  DATE"  shall  mean  the date on  which  the  Closing
       occurs.
                  "CONSENT"  shall mean any  consent,  approval,  authorization,
       clearance,  exemption,  waiver,  or  similar  affirmation  by any  Person
       pursuant to any Contract, Law, Order, or Permit.

                  "CONTRACT"   shall  mean  any   written  or  oral   agreement,
       arrangement, authorization,  commitment, contract, indenture, instrument,
       lease,  obligation,   plan,  practice,   restriction,   understanding  or
       undertaking  of any kind or  character,  or other  document  to which any
       Person is a party or that is binding on any Person or its capital  stock,
       Assets or business.

                  "DEFAULT" shall mean (i) any breach or violation of or default
       under any  Contract,  Order or Permit,  (ii) any  occurrence of any event
       that with the  passage  of time or the  giving  of  notice or both  would
       constitute a breach or violation of or default under any Contract,  Order
       or Permit,  or (iii) any occurrence of any event that with or without the
       passage  of time or the  giving of notice  would  give rise to a right to
       terminate or revoke,  change the current terms of, or renegotiate,  or to
       accelerate,  increase, or impose any Liability under, any Contract, Order
       or Permit, where, in any such event, such Default is reasonably likely to
       have,  individually or in the aggregate,  a Material  Adverse Effect on a
       Party.

                  "DGCL" shall mean the Delaware General Corporation Law.

                  "ENVIRONMENTAL LAWS" shall mean all Laws relating to pollution
       or protection of human health or the environment  (including ambient air,
       surface water, ground water, land surface or subsurface strata) and which
       are   administered,   interpreted   or  enforced  by  the  United  States
       Environmental  Protection  Agency  and  state  and  local  agencies  with
       jurisdiction  over, and including  common law in respect of, pollution or
       protection of the environment,  including the Comprehensive Environmental
       Response  Compensation and Liability Act, as amended,  42 U.S.C.  9601 et
       seq. ("CERCLA"),  the Resource Conservation and Recovery Act, as amended,
       42 U.S.C.  6901 et seq.  ("RCRA"),  and other Laws relating to emissions,
       discharges, releases or threatened releases of any Hazardous Material, or
       otherwise  relating to the manufacture,  processing,  distribution,  use,
       treatment,  storage,  disposal,  transport  or handling of any  Hazardous
       Material.

                  "ERISA" shall mean the Employee Retirement Income Security Act
       of 1974, as amended.

                  "EXHIBITS" 1 through 6, inclusive,  shall mean the Exhibits so
       marked, copies of which are attached to this Agreement. Such Exhibits are
       hereby  incorporated by reference herein and made a part hereof,  and may
       be referred to in this  Agreement  and any other  related  instrument  or
       document without being attached hereto.

                  "GAAP" shall mean generally  accepted  accounting  principles,
       consistently applied during the periods involved.

                                      -32-



                  "HAZARDOUS  MATERIAL" shall mean (i) any hazardous  substance,
       hazardous  material,   hazardous  waste,  regulated  substance  or  toxic
       substance  (as those  terms are defined by any  applicable  Environmental
       Laws)  and  (ii)  any  chemicals,  pollutants,  contaminants,  petroleum,
       petroleum  products,  or oil (and  specifically  shall  include  asbestos
       requiring   abatement,   removal  or   encapsulation   pursuant   to  the
       requirements   of  governmental   authorities  and  any   polychlorinated
       biphenyls).

                  "HELIAN  COMMON  STOCK"  shall mean the $.01 par value  common
       stock of Helian.

                  "HELIAN COMPANIES" shall  mean,  collectively,  Helian and all
       Helian Subsidiaries.

                  "HELIAN   DISCLOSURE   MEMORANDUM"   shall  mean  the  written
       information  entitled "Helian Disclosure  Memorandum"  delivered prior to
       the date of this Agreement to TheraTx describing in reasonable detail the
       matters  contained  therein  and,  with respect to each  disclosure  made
       therein,  specifically  referencing  each Section of this Agreement under
       which such disclosure is being made.  Information  disclosed with respect
       to one Section  shall not be deemed to be  disclosed  for purposes of any
       other Section not specifically referenced with respect thereto.

                  "HELIAN FINANCIAL  STATEMENTS" shall mean (i) the consolidated
       balance sheets (including related notes and schedules,  if any) of Helian
       as of May 31, 1995, and as of November 30, 1994 and 1993, and the related
       statements of income,  changes in  stockholders'  equity,  and cash flows
       (including  related  notes and  schedules,  if any) for the three  months
       ended May 31, 1995, and for each of the three fiscal years ended November
       30, 1994,  1993 and 1992, as filed by Helian in SEC  Documents,  and (ii)
       the consolidated  balance sheets of Helian  (including  related notes and
       schedules,   if  any)  and  related  statements  of  income,  changes  in
       stockholders'  equity,  and  cash  flows  (including  related  notes  and
       schedules,  if any)  included  in SEC  Documents  filed  with  respect to
       periods ended subsequent to May 31, 1995.

                  "HELIAN STOCK PLANS" shall mean the existing  stock option and
       other stock-based compensation plans of Helian designated as follows: Key
       Managers  Incentive  Compensation  Plan,  Executive  Directors  Incentive
       Compensation Plan, Employee Stock Purchase Plan, and Amended and Restated
       1989 Stock Option Plan.

                  "HELIAN  SUBSIDIARIES"  shall mean the Subsidiaries of Helian,
       which shall include the Helian  Subsidiaries  described in Section 5.4 of
       this Agreement and any corporation,  bank, savings association,  or other
       organization  acquired as a Subsidiary  of Helian in the future and owned
       by Helian at the Effective Time.

                  "HSR ACT" shall mean  Section 7A of the Clayton  Act, as added
       by Title II of the Hart-Scott-Rodino  Antitrust Improvements Act of 1976,
       as amended, and the rules and regulations promulgated thereunder.

                  "INTELLECTUAL   PROPERTY"  shall  mean  copyrights,   patents,
       trademarks,  service  marks,  service  names,  tradenames,   applications
       therefor,  technology rights and licenses,  computer software (including,
       without limitation,  any source or object codes therefor or documentation
       relating thereto), trade secrets,  franchises,  know-how,  inventions and
       intellectual property rights.

                  "INTERNAL  REVENUE CODE" shall mean the Internal  Revenue Code
       of  1986,  as  amended,   and  the  rules  and  regulations   promulgated
       thereunder.

                  "KNOWLEDGE"  as  used  with  respect  to a  Person  (including
       references to such Person being aware of a particular  matter) shall mean
       the  personal  knowledge  after due inquiry of the  Chairman,  President,
       Chief Financial Officer,  Chief Accounting  Officer,  General Counsel, or
       any Senior or Executive  

                                      -33-



       Vice  President  of such  Person and the  knowledge  of any such  persons
       obtained  or  which   would  have  been   obtained   from  a   reasonable
       investigation.

                  "LAW"  shall  mean  any  code,  law,  ordinance,   regulation,
       reporting or licensing  requirement,  rule,  or statute  applicable  to a
       Person  or  its  Assets,   Liabilities  or  business,   including   those
       promulgated, interpreted or enforced by any Regulatory Authority.

                  "LIABILITY"  shall  mean any  direct or  indirect,  primary or
       secondary, liability, indebtedness,  obligation, penalty, cost or expense
       (including  costs  of  investigation,  collection  and  defense),  claim,
       deficiency,  guaranty  or  endorsement  of or by any Person  (other  than
       endorsements of notes, bills, checks, and drafts presented for collection
       or deposit  in the  ordinary  course of  business)  of any type,  whether
       accrued, absolute or contingent,  liquidated or unliquidated,  matured or
       unmatured, or otherwise.

                  "LIEN" shall mean any conditional  sale agreement,  default of
       title, easement, encroachment, encumbrance, hypothecation,  infringement,
       lien,  mortgage,  pledge,  reservation,  restriction,  security interest,
       title  retention or other security  arrangement,  or any adverse right or
       interest,  charge,  or claim of any  nature  whatsoever  of,  on, or with
       respect  to any  property  or  property  interest,  other  than Liens for
       current  property  Taxes not yet due and payable and other than easements
       on real  property  which  do not  materially  and  adversely  affect  the
       ownership or use of such real property.

                  "LITIGATION"  shall  mean any  action,  arbitration,  cause of
       action,   claim,   complaint,   criminal   prosecution,   demand  letter,
       governmental or other  examination or  investigation,  hearing,  inquiry,
       administrative  or other  proceeding,  or notice (written or oral) by any
       Person alleging potential Liability or requesting information relating to
       or  affecting a Party,  its  business,  its Assets  (including  Contracts
       related to it), or the transactions contemplated by this Agreement.

                  "MATERIAL" for purposes of this Agreement  shall be determined
       in light of the  facts  and  circumstances  of the  matter  in  question;
       provided that any specific monetary amount stated in this Agreement shall
       determine materiality in that instance.

                  "MATERIAL  ADVERSE  EFFECT"  on a Party  shall  mean an event,
       change or  occurrence  which,  individually  or  together  with any other
       event,  change or  occurrence,  has a material  adverse impact on (i) the
       financial position,  business, or results of operations of such Party and
       its Subsidiaries,  taken as a whole, or (ii) the ability of such Party to
       perform its obligations  under this Agreement or to consummate the Merger
       or the other transactions  contemplated by this Agreement,  provided that
       "material  adverse  impact"  shall not be deemed to include the impact of
       (x) changes in healthcare  and similar Laws of general  applicability  or
       interpretations  thereof  by  courts  or  governmental  authorities,  (y)
       changes  in  generally  accepted  accounting   principles  or  regulatory
       accounting  principles,  and (z)  the  Merger  and  compliance  with  the
       provisions of this Agreement on the operating performance of the Parties.

                  "MERGER  SUB  COMMON  STOCK"  shall  mean the  $1.00 par value
       common stock of Merger Sub.

                  "NASD"  shall  mean the  National  Association  of  Securities
       Dealers, Inc.

                  "NASDAQ NATIONAL MARKET" shall mean the National Market System
       of the National  Association of Securities  Dealers Automated  Quotations
       System.
                  "1933 ACT" shall mean the Securities Act of 1933, as amended.

                  "1934 ACT" shall mean the Securities  Exchange Act of 1934, as
       amended.
                                      -34-


                  "OPERATING  PROPERTY"  shall  mean any  property  owned by the
       Party in question or by any of its Subsidiaries or in which such Party or
       Subsidiary  holds any  interest,  and,  where  required  by the  context,
       includes the owner or operator of such property, but only with respect to
       such property.

                  "ORDER"  shall  mean any  administrative  decision  or  award,
       decree,  injunction,  judgment, order,  quasi-judicial decision or award,
       ruling, or writ of any federal,  state,  local or foreign or other court,
       arbitrator,  mediator,  tribunal,  administrative  agency  or  Regulatory
       Authority.

                  "PARTICIPATION  FACILITY"  shall mean any facility or property
       in which the Party in question or any of its Subsidiaries participates in
       the management  and,  where required by the context,  such term means the
       owner or operator of such facility or property,  but only with respect to
       such facility or property.

                  "PARTY"  shall mean either  Helian or TheraTx,  and  "Parties"
       shall mean both Helian and TheraTx.

                  "PERMIT"  shall mean any federal,  state,  local,  and foreign
       governmental  approval,  authorization,  certificate,  easement,  filing,
       franchise,  license,  notice,  permit,  or right to which any Person is a
       party or that is or may be  binding  upon or inure to the  benefit of any
       Person or its securities, Assets or business.

                  "PERSON" shall mean a natural person or any legal,  commercial
       or  governmental  entity,  such as, but not  limited  to, a  corporation,
       general  partnership,   joint  venture,   limited  partnership,   limited
       liability company, trust, business association,  group acting in concert,
       or any person acting in a representative capacity.

                  "PROXY  STATEMENT"  shall  mean the  proxy  statement  used by
       Helian to solicit the approval of its  stockholders  of the  transactions
       contemplated  by this  Agreement,  which shall include the  prospectus of
       TheraTx  relating to the issuance of the TheraTx  Common Stock to holders
       of Helian Common Stock.

                  "REGISTRATION STATEMENT" shall mean the Registration Statement
       on Form S-4, or other  appropriate  form,  including any pre-effective or
       post-effective  amendments or supplements thereto,  filed with the SEC by
       TheraTx  under the 1933 Act with respect to the shares of TheraTx  Common
       Stock to be issued to the  stockholders  of Helian in connection with the
       transactions contemplated by this Agreement.

                  "REGULATORY AUTHORITIES" shall mean, collectively, the Federal
       Trade  Commission,  the United States Department of Justice and any other
       federal,  state,  county,  local  or  other  governmental  or  regulatory
       agencies, authorities,  instrumentalities,  commissions, boards or bodies
       having  jurisdiction over the Parties and their respective  Subsidiaries,
       the NASD, and the SEC.

                  "REPRESENTATIVE"  shall mean any investment banker,  financial
       advisor, attorney,  accountant,  consultant, or other representative of a
       Person.

                  "RIGHTS"  shall  mean all  arrangements,  calls,  commitments,
       Contracts,  options,  rights  to  subscribe  to,  scrip,  understandings,
       warrants,  or  other  binding  obligations  of any  character  whatsoever
       relating to, or securities  or rights  convertible  into or  exchangeable
       for,  shares of the capital  stock of a Person or by which a Person is or
       may be bound to issue  additional  shares of its  capital  stock or other
       Rights.

                  "SEC  DOCUMENTS"  shall  mean  all  forms,  proxy  statements,
       registration statements,  reports,  schedules, and other documents filed,
       or required to be filed, by a Party or any of its  Subsidiaries  with any
       Regulatory Authority pursuant to the Securities Laws.

                                      -35-



                  "SECURITIES  LAWS" shall mean the 1933 Act,  the 1934 Act, the
       Investment Company Act of 1940, as amended,  the Investment  Advisors Act
       of 1940, as amended, the Trust Indenture Act of 1939, as amended, and the
       rules and regulations of any Regulatory Authority promulgated thereunder.

                  "STOCKHOLDERS'   MEETING"   shall  mean  the  meeting  of  the
       stockholders  of  Helian  to be  held  pursuant  to  Section  8.1 of this
       Agreement, including any adjournment or adjournments thereof.

                  "STOCK OPTION AGREEMENT" shall mean the Stock Option Agreement
       issued to TheraTx by  Helian,  substantially  in the form of Exhibit 1 to
       this Agreement.

                  "SUBSIDIARIES"  shall  mean all  those  corporations  or other
       entities of which the entity in question  either (i) owns or controls 50%
       or more of the outstanding  equity  securities either directly or through
       an  unbroken  chain of  entities  as to each of which  50% or more of the
       outstanding  equity  securities  is owned  directly or  indirectly by its
       parent or (ii) in the case of partnerships, serves as a general partner.

                  "SURVIVING  CORPORATION"  shall mean  Helian as the  surviving
       corporation resulting from the Merger.

                  "TAX" or "TAXES" shall mean any federal, state, county, local,
       or foreign income, profits,  franchise,  gross receipts,  payroll, sales,
       employment,  use, property,  withholding,  excise,  occupancy,  and other
       taxes, assessments,  charges, fares, or impositions,  including interest,
       penalties, and additions imposed thereon or with respect thereto.

                  "THERATX CAPITAL STOCK" shall mean, collectively,  the TheraTx
       Common Stock,  the TheraTx  Preferred Stock and any other class or series
       of capital stock of TheraTx.

                  "THERATX  COMMON  STOCK" shall mean the $.001 par value common
       stock of TheraTx.

                  "THERATX COMPANIES" shall mean, collectively,  TheraTx and all
       TheraTx Subsidiaries.

                  "THERATX   DISCLOSURE   MEMORANDUM"  shall  mean  the  written
       information entitled "TheraTx Disclosure  Memorandum"  delivered prior to
       the date of this Agreement to Helian  describing in reasonable detail the
       matters  contained  therein  and,  with respect to each  disclosure  made
       therein,  specifically  referencing  each Section of this Agreement under
       which such disclosure is being made.  Information  disclosed with respect
       to one Section  shall not be deemed to be  disclosed  for purposes of any
       other Section not specifically referenced with respect thereto.

                  "THERATX FINANCIAL STATEMENTS" shall mean (i) the consolidated
       statements of condition  (including related notes and schedules,  if any)
       of TheraTx as of June 30, 1995, and as of December 31, 1994 and 1993, and
       the related  statements of income,  changes in stockholders'  equity, and
       cash flows  (including  related notes and schedules,  if any) for the six
       months  ended  June 30,  1995,  and for  each of the  three  years  ended
       December 31, 1994,  1993 and 1992, as filed by TheraTx in SEC  Documents,
       and (ii) the consolidated  statements of condition of TheraTx  (including
       related notes and  schedules,  if any) and related  statements of income,
       changes in stockholders'  equity, and cash flows (including related notes
       and  schedules,  if any) included in SEC Documents  filed with respect to
       periods ended subsequent to June 30, 1995.

                  "THERATX  PREFERRED  STOCK"  shall  mean the  $.001  par value
       preferred stock of TheraTx.

                  "THERATX  RIGHTS"  shall  mean the  preferred  stock  purchase
       rights issued pursuant to the TheraTx Rights Agreement.

                  "THERATX  RIGHTS  AGREEMENT"  shall mean that  certain  Rights
       Agreement,  dated July 28, 1995,  between TheraTx and U.S. Stock Transfer
       Corporation, as Rights Agent.

                                      -36-



                  "THERATX SUBSIDIARIES" shall mean the Subsidiaries of TheraTx,
       which shall include any corporation or other  organization  acquired as a
       Subsidiary of TheraTx in the future and owned by TheraTx at the Effective
       Time.

                  (b) The terms set forth below shall have the meanings ascribed
       thereto in the referenced sections:

              Base Period Trading Price                          Section 3.1
              Closing                                            Section 1.2
              Effective Time                                     Section 1.3
              ERISA Affiliate                                    Section 5.14
              Exchange Agent                                     Section 4.1
              Exchange Ratio                                     Section 3.1
              Final Helian Purchase Date                         Section 8.15
              Helian Benefit Plans                               Section 5.14
              Helian Contracts                                   Section 5.15
              Helian ESPP                                        Section 3.5
              Helian ERISA Plan                                  Section 5.14
              Helian Options                                     Section 3.5
              Helian Pension Plan                                Section 5.14
              Helian Rights                                      Section 3.5
              Helian SEC Reports                                 Section 5.5
              Indemnified Party                                  Section 8.14
              Maximum Amount                                     Section 8.14
              Maximum Exchange Ratio                             Section 3.1
              Maximum Price                                      Section 3.1
              Measurement Period                                 Section 3.1
              Merger                                             Section 1.1
              Minimum Exchange Ratio                             Section 3.1
              Minimum Price                                      Section 3.1
              Reference Exchange Ratio                           Exhibit 6
              Reference Price                                    Exhibit 6
              Stockholder Agreement                              Section 1.5
              Tax Opinion                                        Section 9.1
              TheraTx Benefit Plans                              Section 6.12
              TheraTx Contracts                                  Section 6.13
              TheraTx ERISA Plan                                 Section 6.12
              TheraTx Pension Plan                               Section 6.12
              TheraTx SEC Reports                                Section 6.4

                    (c) Any singular term in this  Agreement  shall be deemed to
include  the  plural,  and any  plural  term the  singular.  Whenever  the words
"include,"  "includes" or "including" are used in this Agreement,  they shall be
deemed followed by the words "without limitation."

              11.2  EXPENSES.

                    (a) Except as otherwise  provided in this Section 11.2, each
of the Parties  shall bear and pay all direct costs and expenses  incurred by it
or on its behalf in connection  with the  transactions  contemplated  hereunder,
including filing, registration and application fees, printing fees, and fees and
expenses  of  its  own  financial  or  other  consultants,  investment  bankers,
accountants,  and  counsel,  except that each of the Parties  shall bear and pay
one-half  of the  filing  fees  payable  in  connection  with  the  Registration
Statement  and  the  Joint  Proxy  

                                      -37-



Statement and printing  costs  incurred in  connection  with the printing of the
Registration Statement and the Joint Proxy Statement.

                    (b)  Notwithstanding  the  foregoing,  if this  Agreement is
terminated by Helian  pursuant to Section  10.1(h),  then TheraTx shall promptly
pay Helian the sum of $300,000 by wire transfer of immediately available funds.

                    (c) Nothing  contained in this Section 11.2 shall constitute
or shall be deemed to constitute  liquidated damages for the willful breach by a
Party of the  terms of this  Agreement  or  otherwise  limit  the  rights of the
nonbreaching Party.

              11.3 BROKERS AND FINDERS.  Except for Carleton McCreary,  Holmes &
Co.,  as to Helian and except for  Robertson,  Stephens & Company as to TheraTx,
each of the  Parties  represents  and  warrants  that  neither it nor any of its
officers, directors,  employees, or Affiliates has employed any broker or finder
or incurred any Liability for any financial advisory fees,  investment  bankers'
fees,  brokerage  fees,  commissions,  or finders' fees in connection  with this
Agreement or the transactions  contemplated  hereby.  In the event of a claim by
any broker or finder based upon his or its  representing or being retained by or
allegedly  representing  or being retained by Helian or TheraTx,  each of Helian
and TheraTx,  as the case may be,  agrees to indemnify  and hold the other Party
harmless of and from any Liability in respect of any such claim.

              11.4 ENTIRE  AGREEMENT.  Except as  otherwise  expressly  provided
herein,  this  Agreement  (including the documents and  instruments  referred to
herein) constitutes the entire agreement between the Parties with respect to the
transactions  contemplated  hereunder and supersedes all prior  arrangements  or
understandings with respect thereto,  written or oral. Nothing in this Agreement
expressed  or implied,  is  intended  to confer upon any Person,  other than the
Parties or their respective successors,  any rights, remedies,  obligations,  or
liabilities  under or by reason of this  Agreement,  other than as  provided  in
Section 8.14 of this Agreement.

              11.5  AMENDMENTS.  To the extent  permitted by Law, this Agreement
may be amended by a  subsequent  writing  signed by each of the Parties upon the
approval of the Boards of Directors of each of the  Parties,  whether  before or
after stockholder approval of this Agreement has been obtained;  provided,  that
after any such approval by the holders of Helian  Common  Stock,  there shall be
made no amendment that pursuant to Section  251(d) of the DGCL requires  further
approval by such stockholders without the further approval of such stockholders.

              11.6  WAIVERS.

                    (a)  Prior  to or at the  Effective  Time,  TheraTx,  acting
through its Board of  Directors,  chief  executive  officer or other  authorized
officer,  shall have the right to waive any  Default in the  performance  of any
term of this Agreement by Helian, to waive or extend the time for the compliance
or fulfillment by Helian of any and all of its obligations under this Agreement,
and to  waive  any or all of the  conditions  precedent  to the  obligations  of
TheraTx under this  Agreement,  except any condition  which,  if not  satisfied,
would  result in the  violation  of any Law. No such waiver  shall be  effective
unless in writing signed by a duly authorized officer of TheraTx.

                    (b)  Prior  to or at  the  Effective  Time,  Helian,  acting
through its Board of  Directors,  chief  executive  officer or other  authorized
officer,  shall have the right to waive any  Default in the  performance  of any
term of this  Agreement  by  TheraTx,  to  waive  or  extend  the  time  for the
compliance or  fulfillment  by TheraTx of any and all of its  obligations  under
this  Agreement,  and to waive  any or all of the  conditions  precedent  to the
obligations of Helian under this Agreement,  except any condition  which, if not
satisfied,  would  result in the  violation  of any Law. No such waiver shall be
effective unless in writing signed by a duly authorized officer of Helian.

                                      -38-



                    (c) The failure of any Party at any time or times to require
performance of any provision  hereof shall in no manner affect the right of such
Party  at a later  time to  enforce  the  same or any  other  provision  of this
Agreement.  No waiver of any condition or of the breach of any term contained in
this Agreement in one or more instances  shall be deemed to be or construed as a
further  or  continuing  waiver of such  condition  or breach or a waiver of any
other condition or of the breach of any other term of this Agreement.

              11.7 ASSIGNMENT.  Except as expressly contemplated hereby, neither
this Agreement nor any of the rights,  interests or obligations  hereunder shall
be  assigned by any Party  hereto  (whether by  operation  of Law or  otherwise)
without the prior written  consent of the other Party.  Subject to the preceding
sentence,  this Agreement  will be binding upon,  inure to the benefit of and be
enforceable by the Parties and their respective successors and assigns.

              11.8  NOTICES.  All  notices  or other  communications  which  are
required or permitted  hereunder shall be in writing and sufficient if delivered
by hand, by facsimile  transmission,  by registered or certified  mail,  postage
pre-paid,  or by courier or overnight  carrier,  to the persons at the addresses
set forth  below (or at such other  address as may be provided  hereunder),  and
shall be deemed to have been delivered as of the date so delivered:

                  Helian:                 Helian Health Group, Inc.
                                          9600 Larkspur Lane, Suite 201
                                          Monterey, California  93940
                                          Telecopy Number:  (408) 646-1611

                                          Attention: Lawrence S. Dolin

                  Copy to Counsel:        Gray Cary Ware & Freidenrich
                                          400 Hamilton Avenue
                                          Palo Alto, California 94301-1825
                                          Telecopy Number:  (415) 327-3699

                                          Attention: Diane Holt Frankle

                  TheraTx:                TheraTx, Incorporated
                                          400 Northridge Road, Suite 400
                                          Atlanta, Georgia 30350
                                          Telecopy Number:  (404) 641-0483

                                          Attention: John A. Bardis, President

                  Copy to Counsel:        Alston & Bird
                                          1201 Helian Peachtree Street
                                          Atlanta, Georgia 30309-3424
                                          Telecopy Number:  (404) 881-4777

                                          Attention: J. Vaughan Curtis

              11.9  GOVERNING  LAW.  This  Agreement  shall be  governed  by and
construed in accordance  with the Laws of the State of Delaware,  without regard
to any applicable conflicts of Laws.

              11.10 COUNTERPARTS.  This Agreement may be executed in two or more
counterparts,  each of which shall be deemed to be an original, but all of which
together shall constitute one and the same instrument.

              11.11 CAPTIONS.  The captions  contained in this Agreement are for
reference purposes only and are not part of this Agreement.

                                      -39-



              11.12 Interpretations.  Neither this Agreement nor any uncertainty
or ambiguity  herein shall be construed or resolved  against any party,  whether
under any rule of construction or otherwise. No party to this Agreement shall be
considered the draftsman.  The parties acknowledge and agree that this Agreement
has been reviewed,  negotiated  and accepted by all parties and their  attorneys
and shall be construed and interpreted  according to the ordinary meaning of the
words used so as fairly to accomplish the purposes and intentions of all parties
hereto.

              11.13  ENFORCEMENT  OF  AGREEMENT.  The Parties  hereto agree that
irreparable  damage would occur in the event that any of the  provisions of this
Agreement  was not  performed  in  accordance  with  its  specific  terms or was
otherwise breached.  It is accordingly agreed that the Parties shall be entitled
to an injunction or  injunctions  to prevent  breaches of this  Agreement and to
enforce  specifically the terms and provisions hereof in any court of the United
States or any state  having  jurisdiction,  this being in  addition to any other
remedy to which they are entitled at law or in equity.

              11.14 SEVERABILITY.  Any term or provision of this Agreement which
is invalid or unenforceable in any jurisdiction  shall, as to that jurisdiction,
be  ineffective  to the extent of such  invalidity or  unenforceability  without
rendering  invalid or  unenforceable  the remaining terms and provisions of this
Agreement or affecting  the  validity or  enforceability  of any of the terms or
provisions of this Agreement in any other jurisdiction. If any provision of this
Agreement is so broad as to be unenforceable, the provision shall be interpreted
to be only so broad as is enforceable.

              IN WITNESS WHEREOF,  each of the Parties has caused this Agreement
to be executed on its behalf and its corporate  seal to be hereunto  affixed and
attested by officers thereunto as of the day and year first above written.

WITNESS/ATTEST:                                    HELIAN HEALTH GROUP, INC.


  /s/  Michael K. McMillan                         By:   /s/  Lawrence S. Dolin
                                                         Chief Executive Officer

[CORPORATE SEAL]


                                      -40-




ATTEST:                                              ATLANTA ACQUISITION CORP.


  /s/  Jonathan H. Glenn                             By:   /s/  John A. Bardis
Secretary                                                  President


[CORPORATE SEAL]


ATTEST:                                              THERATX, INCORPORATED


  /s/  Jonathan H. Glenn                             By:   /s/  John A. Bardis
Secretary                                                  President


[CORPORATE SEAL]

                                      -41-




                                LIST OF EXHIBITS


EXHIBIT NUMBER    DESCRIPTION

      1.          Form of Stock Option Agreement.  (ss.ss. 1.4, 11.1).

      2.          Form of Stockholder Agreement.  (ss. 1.5).

      3.          Form of  agreement  of  affiliates  of Helian.  (ss.ss.  8.12,
                  9.2(g)).

      4.          Matters as to which Gray Cary Ware &  Freidenrich  will opine.
                  (ss. 9.2(d)).

      5.          Matters as to which Alston & Bird will opine.  (ss. 9.3(d)).

      6.          Pricing Schedule.  (ss. 3.1(c)).


                                      -iv-





                                    EXHIBIT 1

                         FORM OF STOCK OPTION AGREEMENT

       STOCK OPTION AGREEMENT, dated as of August 29, 1995 (the "Agreement"), by
and between Helian Health Group, Inc., a Delaware  corporation  ("Issuer"),  and
TheraTx, Incorporated, a Delaware corporation ("Grantee").

       WHEREAS,  Issuer,  Grantee  and a  wholly  owned  subsidiary  of  Grantee
("Merger  Sub") have  entered into that  certain  Agreement  and Plan of Merger,
dated as of August 29, 1995 (the "Merger Agreement"), providing for, among other
things,  the  merger  of Merger  Sub with and into  Issuer,  with  Issuer as the
surviving corporation; and

       WHEREAS,  as a condition  and  inducement  to Grantee's  execution of the
Merger Agreement, Grantee has required that Issuer agree, and Issuer has agreed,
to grant Grantee the Option (as defined below);

       NOW,  THEREFORE,  in  consideration  of the  respective  representations,
warranties,  covenants  and  agreements  set  forth  herein  and in  the  Merger
Agreement, and intending to be legally bound hereby, Issuer and Grantee agree as
follows:

        1.  DEFINED  TERMS.  Capitalized  terms  which are used but not  defined
herein shall have the meanings ascribed to such terms in the Merger Agreement.

       2. GRANT OF OPTION. Subject to the terms and conditions set forth herein,
Issuer hereby grants to Grantee an irrevocable option (the "Option") to purchase
a number of shares of common  stock,  par value $.01 per share  ("Issuer  Common
Stock"),  of Issuer up to  821,270  of such  shares  (as  adjusted  as set forth
herein,  the "Option  Shares,"  which shall include the Option Shares before and
after any  transfer of such Option  Shares,  but in no event shall the number of
Option Shares for which this Option is exercisable  exceed 15% of the issued and
outstanding  shares of Issuer Common Stock) at a purchase price per Option Share
(as adjusted as set forth herein,  the "Purchase Price") equal to the average of
the daily  closing  sale prices per share of Issuer  Common  Stock for the first
five trading days following  public  announcement of the execution of the Merger
Agreement,  as  reported  on the  National  Association  of  Securities  Dealers
Automated  Quotations  System National Market System ("Nasdaq  National Market")
(as  reported in The Wall Street  Journal or, if not reported  therein,  another
authoritative source).

       3.     EXERCISE OF OPTION.

              (a) Provided that (i) neither  Grantee nor Holder (as  hereinafter
defined),  as  applicable,  shall be in  material  breach of the  agreements  or
covenants  contained  in this  Agreement  or the Merger  Agreement,  and (ii) no
preliminary  or  permanent  injunction  or other order  against the  delivery of
shares  covered by the Option issued by any court of competent  jurisdiction  in
the United  States shall be in effect,  and (iii) all waiting  periods,  if any,
under the HSR Act  applicable to the issuance of Option Shares  hereunder  shall
have expired or been terminated,  Holder may exercise the Option, in whole or in
part, at any time and from time to time  following the  occurrence of a Purchase
Event;  provided that the Option shall  terminate and be of no further force and
effect upon the earliest to occur of (A) the Effective  Time, (B) termination of
the  Merger  Agreement  in  accordance  with  the  terms  thereof  prior  to the
occurrence  of a Purchase  Event or a Preliminary  Purchase  Event (other than a
termination of the Merger  Agreement by Grantee  pursuant to Section  10.1(b) or
Section  10.1(c)  thereof (but, in each case,  only if the breach giving rise to
such  termination  was willful)  (each a "Default  Termination")  or pursuant to
Section 10.1(g) thereof),  (C) nine months after a Default Termination,  and (D)
nine months  after  termination  of the Merger  Agreement  (other than a Default
Termination)  following  the  occurrence  of a Purchase  Event or a  Preliminary
Purchase Event or pursuant to Section 10.1(g) thereof;  provided,  further, that
if Issuer has entered into an agreement  relating to an Acquisition  Transaction
(as defined below) prior to expiration of the nine-month  period provided in the
foregoing  clauses (C) or (D), the Option shall not terminate  before the second
business day following  receipt by the "Holder" (as defined  below) of notice of
the occurrence of either (i)  consummation  of such  Acquisition  Transaction or
(ii) termination of all agreements  providing for such  Acquisition  Transaction
and 




abandonment  of  such  Acquisition  Transaction;  provided,  further,  that  any
purchase of shares upon  exercise of the Option  shall be subject to  compliance
with  applicable  Law. The term "Holder" shall mean the holder or holders of the
Option from time to time, and which  initially is Grantee.  The rights set forth
in Section 8 shall  terminate  when the right to exercise the Option  terminates
(other  than as a result of a  complete  exercise  of the  Option)  as set forth
herein.

              (b) As used herein,  a "Purchase Event" means any of the following
events subsequent to the date of this Agreement:

                  (i) without Grantee's prior written consent, Issuer shall have
       authorized,  recommended,  publicly  proposed  or publicly  announced  an
       intention  to  authorize,  recommend  or  propose,  or  entered  into  an
       agreement  with any  person  (other  than  Grantee or any  Subsidiary  of
       Grantee) to effect an Acquisition Transaction (as defined below). As used
       herein,  the  term  Acquisition  Transaction  shall  mean  (A) a  merger,
       consolidation  or  similar  transaction  involving  Issuer  or any of its
       Subsidiaries   (other   than   transactions   solely   between   Issuer's
       Subsidiaries),  (B) except as  permitted  pursuant  to Section 7.2 of the
       Merger Agreement, the disposition, by sale, lease, exchange or otherwise,
       of assets of Issuer  or any of its  Subsidiaries  representing  in either
       case  25%  or  more  of  the  consolidated   assets  of  Issuer  and  its
       Subsidiaries,   or  (C)  the  issuance,  sale  or  other  disposition  of
       (including by way of merger, consolidation, share exchange or any similar
       transaction)  securities  representing 25% or more of the voting power of
       Issuer  or any  of  its  Subsidiaries  (each  of  (A),  (B)  or  (C),  an
       "Acquisition Transaction"); or

                  (ii) any  person  (other  than  Grantee or any  Subsidiary  of
       Grantee)  shall  have  acquired  beneficial  ownership  (as such  term is
       defined in Rule 13d-3 promulgated under the Exchange Act) of or the right
       to  acquire  beneficial  ownership  of, or any  "group"  (as such term is
       defined under the Exchange  Act),  other than a group of which Grantee or
       any  Subsidiary  of Grantee is a member,  shall  have been  formed  which
       beneficially owns, or has the right to acquire  beneficial  ownership of,
       25% or more of the then-outstanding shares of Issuer Common Stock.

              (c) As  used  herein,  a "Preliminary Purchase Event" means any of
the following events:

                  (i) any  person  (other  than  Grantee  or any  Subsidiary  of
       Grantee)  shall  have  commenced  (as such term is  defined in Rule 14d-2
       under the Exchange  Act),  or shall have filed a  registration  statement
       under the  Securities  Act with  respect  to, a tender  offer or exchange
       offer to  purchase  any shares of Issuer  Common  Stock  such that,  upon
       consummation of such offer,  such person would own or control 15% or more
       of the  then-outstanding  shares of Issuer  Common  Stock  (such an offer
       being  referred  to herein as a "Tender  Offer" or an  "Exchange  Offer,"
       respectively); or

                  (ii)  the  holders  of  Issuer  Common  Stock  shall  not have
       approved the Merger  Agreement at the meeting of such  stockholders  held
       for the purpose of voting on the Merger Agreement, such meeting shall not
       have been held or shall have been canceled  prior to  termination  of the
       Merger Agreement,  or Issuer's Board of Directors shall have withdrawn or
       modified in a manner  adverse to Grantee the  recommendation  of Issuer's
       Board of  Directors  with respect to the Merger  Agreement,  in each case
       after it shall have been publicly  announced  that any person (other than
       Grantee or any  Subsidiary of Grantee)  shall have (A) made, or disclosed
       an intention to make, a proposal to engage in an Acquisition Transaction,
       or (B) commenced a Tender Offer or filed a registration  statement  under
       the Securities Act with respect to an Exchange Offer; or

                  (iii) any person  (other  than  Grantee or any  Subsidiary  of
       Grantee)  shall  have  made  a  bona  fide  proposal  to  Issuer  or  its
       stockholders by public announcement, or by written communications that is
       or becomes the subject of public disclosure,  to engage in an Acquisition
       Transaction; or

                  (iv) after a proposal is made by a person  (other than Grantee
       or any Subsidiary of Grantee) to Issuer or its  stockholders to engage in
       an  Acquisition  Transaction,  or such person states its intention to the
       Issuer to make such a proposal if the Merger Agreement terminates, Issuer
       shall have breached any of its 

                                      -2-



       representations,  warranties,  covenants or  agreements  contained in the
       Merger  Agreement and such breach would entitle  Grantee to terminate the
       Merger Agreement under Section 10.1(b) or 10.1(c) thereof (without regard
       to any cure  period  provided  for  therein  unless such cure is effected
       promptly without jeopardizing  consummation of the Merger pursuant to the
       terms of the Merger Agreement); or

                  (v) any  person  (other  than  Grantee  or any  Subsidiary  of
       Grantee) other than in connection with a transaction to which Grantee has
       given its prior  written  consent,  shall  have filed an  application  or
       notice  with any  Regulatory  Authority  for  approval  to  engage  in an
       Acquisition Transaction.

As used in this Agreement, "person" shall have the meaning specified in Sections
3(a)(9) and 13(d)(3) of the Exchange Act.

              (d)  Issuer  shall  notify  Grantee  promptly  in  writing  of the
occurrence of any Preliminary Purchase Event or Purchase Event,  provided,  that
the giving of such  notice by Issuer  shall not be a  condition  to the right of
Holder to exercise the Option.

              (e) In the event Holder  wishes to exercise  the Option,  it shall
send to Issuer a written  notice (the date of which being herein  referred to as
the "Notice  Date")  specifying (i) the total number of Option Shares it intends
to purchase pursuant to such exercise and (ii) a place and date not earlier than
three business days nor later than 15 business days from the Notice Date for the
closing (the "Closing") of such purchase (the "Closing Date");  provided,  that,
notwithstanding  the  provisions  of Section  3(a)  hereof,  if Holder has given
notice of exercise of the Option prior to  expiration  of the Option as provided
in Section  3(a),  but the Option  Shares  cannot be acquired by Holder prior to
expiration of the Option as provided in Section 3(a) by reason of any applicable
Law or Order,  the Option  shall  expire  with  respect to the number of Options
Shares  covered by such  notice ten  business  days  after  such  impediment  to
exercise  shall have been  removed or shall have become final and not subject to
appeal, but in no event later than six (6) months after such notice of exercise.
If prior  notification to or Consent of any Regulatory  Authority is required in
connection with such purchase,  Issuer shall cooperate with Holder in the filing
of the  required  notice or  application  for Consent and the  obtaining of such
approval  and the Closing  shall occur  immediately  following  such  regulatory
Consents (and expiration of any mandatory waiting periods).  Any exercise of the
Option shall be deemed to occur on the Notice Date relating thereto.

       4.     PAYMENT AND DELIVERY OF CERTIFICATES.

              (a) On each  Closing  Date,  Holder  shall (i) pay to  Issuer,  in
immediately  available  funds by wire  transfer to a bank account  designated by
Issuer, an amount equal to the Purchase Price multiplied by the number of Option
Shares to be purchased on such Closing Date, and (ii) present and surrender this
Agreement to the Issuer at the address of the Issuer  specified in Section 12(f)
hereof.

              (b) At each  Closing,  simultaneously  with  the  delivery  of the
aggregate  Purchase Price and surrender of this Agreement as provided in Section
4(a),  (i) Issuer  shall  deliver to Holder (A) a  certificate  or  certificates
representing  the Option  Shares to be purchased at such  Closing,  which Option
Shares  shall be free and  clear of all  Liens  and  subject  to no  pre-emptive
rights,  and (B) if the  Option is  exercised  in part  only,  an  executed  new
agreement with the same terms as this Agreement evidencing the right to purchase
the balance of the shares of Issuer Common Stock purchasable hereunder, and (ii)
Holder shall deliver to Issuer a letter  agreeing that Holder shall not offer to
sell or  otherwise  dispose of such Option  Shares in  violation  of  applicable
federal and state law or of the provisions of this Agreement.

              (c) In addition to any other legend that is required by applicable
law, certificates for the Option Shares and any Grantee Shares delivered at each
Closing  shall  be  endorsed   with  a  restrictive   legend  which  shall  read
substantially as follows:

       THE TRANSFER OF THE STOCK  REPRESENTED BY THIS  CERTIFICATE IS SUBJECT TO
       RESTRICTIONS  ARISING UNDER THE SECURITIES  ACT OF 1933, AS AMENDED,  AND
       PURSUANT TO THE TERMS OF A STOCK OPTION  AGREEMENT DATED AS OF 

                                      -3-



       AUGUST 29, 1995. A COPY OF SUCH  AGREEMENT WILL BE PROVIDED TO THE HOLDER
       HEREOF  WITHOUT  CHARGE UPON  RECEIPT BY THE ISSUER OF A WRITTEN  REQUEST
       THEREFOR.

It is  understood  and agreed that the above legend shall be removed by delivery
of substitute  certificate(s) without such legend if Holder shall have delivered
to Issuer (or Issuer shall have delivered to Grantee, as the case may be) a copy
of a letter  from the staff of the SEC,  or an  opinion  of  counsel in form and
substance reasonably satisfactory to Issuer (or Grantee, as the case may be) and
its counsel,  to the effect that such legend is not required for purposes of the
Securities Act.

              (d) Upon the giving by Holder to Issuer of the  written  notice of
exercise  of the  Option  provided  for under  Section  3(e),  the tender of the
aggregate  Purchase  Price and the tender of this  Agreement  to Issuer,  Holder
shall be deemed to be the holder of record of the Option  Shares  issuable  upon
such  exercise,  notwithstanding  that the stock  transfer books of Issuer shall
then be closed or that  certificates  representing  such Option Shares shall not
then be actually delivered to Holder. Issuer shall pay all expenses, and any and
all United States federal,  state, and local taxes and other charges that may be
payable in  connection  with the  preparation,  issuance  and  delivery of stock
certificates  under  this  Section  in the  name  of  Holder  or  its  assignee,
transferee, or designee.  Grantee shall pay all expenses, and any and all United
States federal,  state, and local taxes and other charges that may be payable in
connection  with the  preparation,  issuance and delivery of stock  certificates
under  this  Section  in the name of  Issuer  or its  assignee,  transferee,  or
designee.

              (e) Issuer  agrees (i) that it shall at all times  maintain,  free
from preemptive rights, sufficient authorized but unissued or treasury shares of
Issuer  Common  Stock so that the Option  may be  exercised  without  additional
authorization  of Issuer Common Stock after giving effect to all other  options,
warrants,  convertible  securities  and other rights to purchase  Issuer  Common
Stock,  (ii) that it will not, by charter  amendment or through  reorganization,
consolidation,  merger, dissolution or sale of assets, or by any other voluntary
act,  avoid  or  seek to  avoid  the  observance  or  performance  of any of the
covenants,  stipulations or conditions to be observed or performed  hereunder by
Issuer,  (iii)  promptly to take all action as may from time to time be required
(including (A) complying with all pre-merger notification, reporting and waiting
period  requirements  and (B) in the  event  prior  Consent  of or notice to any
Regulatory   Authority  is  necessary   before  the  Option  may  be  exercised,
cooperating  fully with Holder in  preparing  such  applications  or notices and
providing such  information to such  Regulatory  Authority as it may require) in
order to permit Holder to exercise the Option and Issuer duly and effectively to
issue shares of the Issuer Common Stock  pursuant  hereto,  and (iv) promptly to
take all  action  provided  herein to  protect  the  rights  of  Holder  against
dilution.

       5.     REPRESENTATIONS AND WARRANTIES  OF ISSUER. Issuer hereby represent
and warrants to Grantee (and each other Holder) as follows:

         (a) Issuer has all  requisite  corporate  power and  authority to enter
       into this Agreement and, subject to any approvals  referred to herein, to
       consummate  the  transactions  contemplated  hereby.  The  execution  and
       delivery  of this  Agreement  and the  consummation  of the  transactions
       contemplated  hereby have been duly authorized by all necessary corporate
       action on the part of Issuer.  This  Agreement has been duly executed and
       delivered by Issuer.  The execution and delivery of this  Agreement,  the
       consummation of the  transactions  contemplated  hereby and compliance by
       Issuer with any of the  provisions  hereof will not (i) conflict  with or
       result in a breach of any provision of its Articles of  Incorporation  or
       Bylaws  or  a  default  (or  give  rise  to  any  right  of  termination,
       cancellation  or  acceleration)  under any of the  terms,  conditions  or
       provisions of any note, bond, debenture,  mortgage,  indenture,  license,
       material  agreement or other  material  instrument or obligation to which
       Issuer is bound,  or (ii) violate any order,  writ,  injunction,  decree,
       statute, rule or regulation applicable to Issuer or any of its properties
       or  assets.  No  Consent  of  any  governmental  authority,   other  than
       compliance  with  applicable   federal  and  state  securities  laws  and
       compliance with all pre-merger notification, reporting and waiting period
       requirements,  is required of Issuer in connection with the execution and
       delivery by Issuer of this Agreement or the consummation by Issuer of the
       transactions contemplated hereby.

                                      -4-



         (b)  Issuer  has  taken all  necessary  corporate  and other  action to
       authorize  and reserve and to permit it to issue,  and, at all times from
       the date hereof until the  obligation to deliver Issuer Common Stock upon
       the exercise of the Option  terminates,  will have reserved for issuance,
       upon exercise of the Option,  the number of shares of Issuer Common Stock
       necessary  for Grantee to exercise  the Option,  and Issuer will take all
       necessary  corporate  action to  authorize  and reserve for  issuance all
       additional shares of Issuer Common Stock or other securities which may be
       issued  pursuant to Section 7 upon exercise of the Option.  The shares of
       Issuer  Common  Stock to be  issued  upon  due  exercise  of the  Option,
       including  all  additional   shares  of  Issuer  Common  Stock  or  other
       securities  which may be issuable  pursuant  to Section 7, upon  issuance
       pursuant  hereto,  shall be duly and  validly  issued,  fully  paid,  and
       nonassessable,  and  shall  be  delivered  free and  clear of all  Liens,
       including any preemptive rights of any stockholder of Issuer.

       6.     REPRESENTATIONS AND WARRANTS OF GRANTEE. Grantee hereby represents
and warrants to Issuer that:

         (a) Grantee has all  requisite  corporate  power and authority to enter
       into this Agreement and, subject to any approvals or consents referred to
       herein, to consummate the transactions contemplated hereby. The execution
       and delivery of this Agreement and the  consummation of the  transactions
       contemplated  hereby have been duly authorized by all necessary corporate
       action on the part of Grantee.  This Agreement has been duly executed and
       delivered by Grantee.

         (b) This Option is not being, and any Option Shares or other securities
       acquired by Grantee  upon  exercise  of the Option will not be,  acquired
       with a view to the  distribution  thereof in violation of the  Securities
       Act.  Grantee shall not sell any Option Shares pursuant to this Agreement
       except in compliance with the Securities Act.

       7.     ADJUSTMENT UPON CHANGES IN CAPITALIZATION, ETC.

              (a) In the event of any change in Issuer Common Stock by reason of
a stock dividend, stock split, split-up, recapitalization, combination, exchange
of shares or similar  transaction,  the type and number of shares or  securities
subject to the  Option,  and the  Purchase  Price  therefor,  shall be  adjusted
appropriately,  and proper  provision shall be made in the agreements  governing
such transaction so that Holder shall receive,  upon exercise of the Option, the
number and class of shares or other  securities  or property  that Holder  would
have received in respect of Issuer Common Stock if the Option had been exercised
immediately prior to such event, or the record date therefor, as applicable.  If
any  additional  shares of Issuer Common Stock are issued after the date of this
Agreement  (other than pursuant to an event  described in the first  sentence of
this Section  7(a)),  the number of shares of Issuer Common Stock subject to the
Option shall be adjusted so that,  after such  issuance,  it,  together with any
shares of Issuer Common Stock previously  issued pursuant hereto,  equals 15% of
the number of shares of Issuer Common Stock then issued and outstanding, without
giving effect to any shares subject to or issued pursuant to the Option.

              (b) In the event that Issuer shall enter in an  agreement:  (i) to
consolidate  with or merge into any  person,  other  than  Grantee or one of its
Subsidiaries,  and shall not be the continuing or surviving  corporation of such
consolidation or merger; (ii) to permit any person, other than Grantee or one of
its  Subsidiaries,  to merge into Issuer and Issuer shall be the  continuing  or
surviving corporation, but, in connection with such merger, the then outstanding
shares of Issuer  Common Stock shall be changed  into or exchanged  for stock or
other  securities of Issuer or any other person or cash or any other property or
the outstanding  shares of Issuer Common Stock  immediately prior to such merger
shall after such merger  represent less than 50% of the  outstanding  shares and
share equivalents of the merged company;  or (iii) to sell or otherwise transfer
all or substantially all of its Assets to any person,  other than Grantee or one
of its Subsidiaries,  then, and in each such case, the agreement  governing such
transaction  shall make proper  provisions  so that the Option  shall,  upon the
consummation of any such transaction and upon the terms and conditions set forth
herein,  be  converted  into,  or  exchanged  for,  an option  (the  "Substitute
Option"), at the election of Holder, of either (x) the Acquiring Corporation (as
defined below), (y) any 

                                      -5-



person that controls the Acquiring  Corporation,  or (z) in the case of a merger
described in clause (ii),  the Issuer (in each case,  such person being referred
to as the "Substitute Option Issuer").

              (c) The Substitute Option shall have the same terms as the Option,
provided that, if the terms of the Substitute Option cannot,  for legal reasons,
be the same as the Option,  such terms shall be as similar as possible and in no
event less advantageous to Holder. The Substitute Option Issuer shall also enter
into an agreement with Holder in substantially  the same form as this Agreement,
which shall be applicable to the Substitute Option.

              (d) The Substitute  Option shall be exercisable for such number of
shares of Substitute  Common Stock (as  hereinafter  defined) as is equal to the
Assigned Value (as  hereinafter  defined)  multiplied by the number of shares of
the  Issuer  Common  Stock for which the  Option  was  theretofore  exercisable,
divided by the Average Price (as hereinafter defined). The exercise price of the
Substitute Option per share of Substitute Common Stock (the "Substitute Purchase
Price")  shall then be equal to the Purchase  Price  multiplied by a fraction in
which the numerator is the number of shares of the Issuer Common Stock for which
the Option was  theretofore  exercisable  and the  denominator  is the number of
shares for which the Substitute Option is exercisable.

              (e)   The following terms have the meanings indicated:

                  (i) "Acquiring  Corporation"  shall mean (x) the continuing or
       surviving  corporation of a consolidation or merger with Issuer (if other
       than Issuer), (y) Issuer in a merger in which Issuer is the continuing or
       surviving  person,  and (z) the transferee of all or any substantial part
       of the  Issuer's  assets  (or the assets of its  Subsidiaries  taken as a
       whole).

                  (ii) "Substitute Common Stock" shall mean the shares of common
       stock (or similar  equity  interest)  with the  greatest  voting power in
       respect of the election of directors  (or persons  similarly  responsible
       for the direction of the business and affairs of) the  Substitute  Option
       Issuer.

                  (iii) "Assigned Value" shall mean the highest of (x) the price
       per share of the Issuer  Common Stock at which a Tender Offer or Exchange
       Offer therefor has been made by any person (other than Grantee),  (y) the
       price  per  share of the  Issuer  Common  Stock to be paid by any  person
       (other than Grantee) pursuant to an agreement with Issuer, and (z) in the
       event  of a sale of all or  substantially  all of  Issuer's  assets,  the
       Assigned  Value  shall be equal to the sum of the price paid in such sale
       for such assets and the current  market value of the remaining  assets of
       Issuer as determined by a nationally  recognized  investment banking firm
       selected  by Holder (or by a majority in interest of the Holders if there
       shall be more than one  Holder (a  "Holder  Majority")),  divided  by the
       number of shares of the Issuer  Common Stock  outstanding  at the time of
       such sale. In the event that a Tender Offer or Exchange Offer is made for
       the Issuer  Common  Stock or an agreement is entered into for a merger or
       consolidation  involving  consideration other than cash, the value of the
       securities or other property  issuable or deliverable in exchange for the
       Issuer  Common  Stock  shall be  determined  by a  nationally  recognized
       investment  banking firm  mutually  selected by Holder (if there shall be
       more  than  one  Holder,  any  such  selection  shall be made by a Holder
       Majority).

                  (iv) "Average Price" shall mean the average closing price of a
       share  of the  Substitute  Common  Stock  for  the one  year  immediately
       preceding the consolidation,  merger or sale in question, but in no event
       higher  than the  closing  price of the shares of the  Substitute  Common
       Stock on the day preceding such  consolidation,  merger or sale; provided
       that if Issuer is the issuer of the Substitute  Option, the Average Price
       shall be  computed  with  respect  to a share of common  stock  issued by
       Issuer,  the person  merging into Issuer or by any company which controls
       or is controlled by such merger person, as Holder may elect.

              (f) In no event pursuant to any of the foregoing  paragraphs shall
the Substitute  Option be exercisable  for more than 15% of the aggregate of the
shares of the  Substitute  Common  Stock  outstanding  prior to  exercise of the
Substitute  Option. In the event that the Substitute Option would be exercisable
for more than 15% of the aggregate of the shares of Substitute  Common Stock but
for the limitation in the first sentence of this  subsection (f), the Substitute
Option Issuer shall make a cash payment to Holder equal to the excess of (i) the
value 

                                      -6-



of the  Substitute  Option  without giving effect to the limitation in the first
sentence of this  subsection  (f) over (ii) the value of the  Substitute  Option
after giving effect to the limitation in the first  sentence of this  subsection
(f). This  difference  in value shall be  determined by a nationally  recognized
investment banking firm selected by Holder.

              (g)  Issuer  shall not enter  into any  transaction  described  in
subsection (b) of this Section 7 unless the Acquiring Corporation and any person
that controls the Acquiring Corporation assume in writing all the obligations of
Issuer  hereunder  and take all other  actions that may be necessary so that the
provisions of this Section 7 are given full force and effect (including, without
limitation, any action that may be necessary so that holders of the other shares
of Substitute  Common Stock are not entitled to exercise any rights by reason of
the  issuance  or  exercise  of the  Substitute  Option  and that the  shares of
Substitute  Common Stock that may be acquired  upon  exercise of the  Substitute
Option are in no way  distinguishable  from or have lesser economic value (other
than  any  diminution  in value  resulting  from the  fact  that the  shares  of
Substitute  Common Stock that may be acquired  upon  exercise of the  Substitute
Option are  restricted  securities,  as defined in Rule 144 under the Securities
Act or any successor  provision)  than other shares of  Substitute  Common Stock
issued by the Substitute Option Issuer).

              (h) The provisions of Sections 8, 9, 10, and 11 shall apply,  with
appropriate  adjustments,  to  any  securities  for  which  the  Option  becomes
exercisable  pursuant to this Section 7 and, as  applicable,  references in such
sections to "Issuer," "Option," "Purchase Price" and "Issuer Common Stock" shall
be deemed to be references to "Substitute Option Issuer,"  "Substitute  Option,"
"Substitute Purchase Price" and "Substitute Common Stock," respectively.

       8.     CERTAIN REPURCHASES.

              (a) Subject to the last  sentence of Section  3(a), at the request
of Holder at any time commencing upon the first occurrence of a Repurchase Event
(as defined in Section 8(d)) and ending 12 months immediately thereafter, Issuer
(including any successor  thereto) shall  repurchase  from Holder the Option and
all shares of Issuer  Common  Stock  purchased  by Holder  pursuant  hereto with
respect to which Holder then has beneficial ownership.  The date on which Holder
exercises its rights under this Section 8 is referred to as the "Request  Date."
Such  repurchase  shall be at an  aggregate  price (the  "Section  8  Repurchase
Consideration") equal to the sum of:

                  (i) the aggregate Purchase Price paid by Holder for any shares
       of Issuer  Common Stock  acquired  pursuant to the Option with respect to
       which Holder then has beneficial ownership.

                  (ii) the  excess,  if any,  of (x) the  Applicable  Price  (as
       defined  below)  for  each  share of  Issuer  Common  Stock  over (y) the
       Purchase Price (subject to adjustment  pursuant to Section 7), multiplied
       by the number of shares of Issuer  Common Stock with respect to which the
       Option has not been exercised; and

                  (iii) the  excess,  if any, of the  Applicable  Price over the
       Purchase Price (subject to adjustment pursuant to Section 7) paid (or, in
       the case of Option  Shares  with  respect  to which the  Option  has been
       exercised but the Closing Date has not  occurred,  payable) by Holder for
       each share of Issuer  Common  Stock with  respect to which the Option has
       been  exercised  and with  respect to which  Holder  then has  beneficial
       ownership  (including  shares  with  respect to which the Option has been
       exercised  but the  Closing  Date has not  occurred),  multiplied  by the
       number of such shares.

              (b) If Holder  exercises  its rights  under this Section 8, Issuer
shall,  within ten  business  days after the  Request  Date,  pay the  Section 8
Repurchase   Consideration   to  Holder  in  immediately   available  funds  and
contemporaneously  with such payment Holder shall surrender to Issuer the Option
and the  certificates  evidencing the Option Shares  purchased  thereunder  with
respect to which Holder then has beneficial ownership,  and Holder shall warrant
that it has sole  record and  beneficial  ownership  of such shares and that the
same are then free and clear of all Liens. Notwithstanding the foregoing, to the
extent that prior  notification  to or approval of any  Regulatory  Authority is
required in  connection  with the payment of all or any portion of the Section 8
Repurchase  Consideration,  Holder  shall have the ongoing  option to revoke its
request for repurchase pursuant to Section 8, in 

                                      -7-



whole or in part,  or to  require  that  Issuer  deliver  from time to time that
portion  of the  Section  8  Repurchase  Consideration  that  it is not  then so
prohibited  from paying and promptly file the required notice or application for
approval and expeditiously process the same (and each party shall cooperate with
the other in the filing of any such notice or  application  and the obtaining of
any such  approval).  If any  Regulatory  Authority  disapproves  of any part of
Issuer's proposed  repurchase  pursuant to this Section 8, Issuer shall promptly
give notice of such fact to Holder.  If any Regulatory  Authority  prohibits the
repurchase  in part but not in whole,  then  Holder  shall have the right (i) to
revoke the repurchase request or (ii) to the extent permitted by such Regulatory
Authority  determine  whether the  repurchase  should apply to the Option and/or
Option Shares and to what extent to each,  and Holder shall  thereupon  have the
right to  exercise  the Option as to the  number of Option  Shares for which the
Option was  exercisable at the Request Date less the sum of the number of shares
covered  by the Option in respect of which  payment  has been made  pursuant  to
Section  8(a)(ii) and the number of shares  covered by the portion of the Option
(if  any)  that  has  been  repurchased.  Holder  shall  notify  Issuer  of  its
determination  under the preceding sentence within five business days of receipt
of notice of disapproval of the repurchase.

                    Notwithstanding  anything  herein  to the  contrary,  all of
Holder's  rights under this Section 8 shall terminate on the date of termination
of this Option pursuant to Section 3(a).

              (c) For purposes of this Agreement,  the "Applicable  Price" means
the highest of (i) the highest  price per share of Issuer  Common Stock paid for
any such share by the person or groups  described in Section  8(d)(i),  (ii) the
price per share of Issuer  Common  Stock  received  by holders of Issuer  Common
Stock in connection  with any merger or other business  combination  transaction
described  in Section  7(b)(i),  7(b)(ii)  or  7(b)(iii),  or (iii) the  highest
closing  sales  price per  share of Issuer  Common  Stock  quoted on the  Nasdaq
National  Market (or if Issuer Common Stock is not quoted on the Nasdaq National
Market,  the  highest  bid price per  share as quoted on the  principal  trading
market or  securities  exchange on which such shares are traded as reported by a
recognized  source chosen by Holder)  during the 60 business days  preceding the
Request Date; provided, that in the event of a sale of less than all of Issuer's
assets, the Applicable Price shall be the sum of the price paid in such sale for
such assets and the current  market value of the  remaining  assets of Issuer as
determined  by an  independent  nationally  recognized  investment  banking firm
selected by Holder and  reasonably  acceptable  to Issuer  (which  determination
shall be conclusive for all purposes of this  Agreement),  divided by the number
of shares of the Issuer  Common Stock  outstanding  at the time of such sale. If
the  consideration  to be offered,  paid or  received  pursuant to either of the
foregoing  clauses  (i) or (ii) shall be other  than in cash,  the value of such
consideration  shall be  determined in good faith by an  independent  nationally
recognized  investment banking firm selected by Holder and reasonably acceptable
to Issuer,  which  determination  shall be  conclusive  for all purposes of this
Agreement.

              (d) As used  herein,  "Repurchase  Event"  shall  occur if (i) any
person  (other than Grantee or any  Subsidiary  of Grantee)  shall have acquired
beneficial  ownership (as such term is defined in Rule 13d-3  promulgated  under
the Exchange Act), or the right to acquire beneficial ownership,  or any "group"
(as such term is defined  under the  Exchange  Act) shall have been formed which
beneficially owns or has the right to acquire  beneficial  ownership,  of 50% or
more of the  then-outstanding  shares of Issuer Common Stock, or (ii) any of the
transactions described in Section 7(b)(i), 7(b)(ii) or 7(b)(iii) shall have been
consummated.

       9.     REGISTRATION RIGHTS.

              (a) Following  termination of the Merger Agreement,  Issuer shall,
subject to the conditions of subparagraph (d) below, if requested by any Holder,
including  Grantee  and any  permitted  transferee  ("Requesting  Holders"),  as
expeditiously  as possible  prepare and file a registration  statement under the
Securities Laws if such registration is necessary in order to permit the sale or
other  disposition  of any  or all  shares  of  Issuer  Common  Stock  or  other
securities that have been acquired by or are issuable to Requesting Holders upon
exercise of the Option in accordance  with the intended  method of sale or other
disposition stated by such Requesting Holder in such request, including, without
limitation, a "shelf" registration statement under Rule 415 under the Securities
Act or any successor provision.

              (b) If  Issuer  at any  time  after  the  exercise  of the  Option
proposes to register any shares of Issuer Common Stock other than in the case of
a registration  solely to implement a dividend  reinvestment or similar plan,

                                      -8-



an employee  benefit plan or a  registration  filed on Form S-4 or any successor
form,  Issuer will promptly give written notice to Holder of its intention to do
so and, upon the written request of Holder given within 20 days after receipt of
any such  notice  (which  request  shall  specify the number of shares of Issuer
Common Stock  intended to be included in such  underwritten  public  offering by
Selling  Stockholder),  Issuer will cause all such shares for which Holder shall
have  requested  participation  in such  registration,  to be so registered  and
included in such underwritten public offering;  provided,  that Issuer may elect
to not cause any such shares to be so  registered  if the  underwriters  in good
faith  object  for valid  business  reasons.  If some but not all the  shares of
Issuer Common Stock,  with respect to which Issuer shall have received  requests
for registration  pursuant to this subparagraph (b), shall be excluded from such
registration,   Issuer  shall  make  appropriate  allocation  of  shares  to  be
registered  among the Selling  Stockholders  and any other  persons  (other than
Issuer) who or which is  permitted  to register  their  shares of Issuer  Common
Stock in connection with such  registration  pro rata in the proportion that the
number of shares requested to be registered by each Selling Stockholder bears to
the  total  number  of  shares   requested  to  be  registered  by  all  Selling
Stockholders  (including such other persons) then desiring to have Issuer Common
Stock registered for sale.

              (c) Issuer,  in respect of any registration of Issuer Common Stock
pursuant  to  subparagraph   (a)  above,   (Issuer  being  referred  to  as  the
"Registrant";  each Requesting  Holder, in respect of any registration of Issuer
Common Stock,  being referred to as a "Selling  Stockholder";  and the shares of
Issuer Common Stock being  registered,  being  referred to as the  "Registerable
Shares") shall use all reasonable  efforts to cause each registration  statement
referred to in subparagraph (a) above, as applicable, to become effective and to
obtain all Consents of other  parties  which are  required  therefor and to keep
such registration statement effective,  provided,  that the Registrant may delay
any  registration of Registerable  Shares required  pursuant to subparagraph (a)
above for a period not  exceeding  90 days if (i) in the good faith  judgment of
the  Board  of  Directors  of  Issuer,  such  registration  would  be  seriously
detrimental  to Issuer  and the Board of  Directors  of Issuer  concludes,  as a
result, that it is essential to defer the filing of such registration  statement
at such time,  and (ii)  Issuer  shall  furnish to the  Selling  Stockholders  a
certificate signed by the Chief Executive Officer of Issuer stating that in good
faith  judgment  of the Board of  Directors  of  Issuer,  it would be  seriously
detrimental  to the Issuer for such  registration  statement  to be filed in the
near  future and that it is,  therefore,  essential  to defer the filing of such
registration  statement  and the  Registrant  shall not be  required to register
Registerable  Shares under the  Securities  Laws  pursuant to  subparagraph  (a)
above:

                  (i) prior to the  earliest  of (a)  termination  of the Merger
       Agreement  pursuant to Section  10.1  thereof,  (b) failure to obtain the
       requisite  stockholder  approval pursuant to Section 9.1(a) of the Merger
       Agreement, and (c) a Purchase Event;

                  (ii)     on more than two occasions;

                  (iii)    more than once during any calendar year;

                  (iv) in the case of any  registration  of Issuer  Common Stock
       requested  pursuant to subparagraph (a) above,  within 180 days after the
       effective date of a registration  referred to in  subparagraph  (c) above
       pursuant  to  which  the  Selling  Stockholder  or  Selling  Stockholders
       concerned were afforded the opportunity to register such shares under the
       Securities Laws and such shares were registered as requested; and

                  (v) unless a request  therefor  is made to the  Registrant  by
       Selling  Stockholders  that  hold at least  25% or more of the  aggregate
       number of Registerable  Shares  (including,  in the case of Issuer Common
       Stock,  shares of Issuer  Common  Stock  issuable  upon  exercise  of the
       Option) then outstanding.

                    In addition to the foregoing,  the  Registrant  shall not be
required to maintain the  effectiveness of any registration  statement after the
expiration  of  nine  months  from  the  effective  date  of  such  registration
statement.  The Registrant shall use all reasonable efforts to make any filings,
and take all steps,  under all applicable  state  securities  Laws to the extent
necessary to permit the sale or other disposition of the Registerable  Shares so
registered  in  accordance  with the intended  method of  distribution  for such
shares,  provided,  that the  Registrant  shall not be  required  to  consent to
general  jurisdiction  or qualify to do  business  in any state  where it is not
otherwise  required  to so consent to such  jurisdiction  or to so qualify to do
business.

                                      -9-

              (d) Except where applicable state Law prohibits such payments, the
Registrant  will pay all expenses  (including  without  limitation  registration
fees,  qualification  fees,  blue sky fees and expenses  (including the fees and
expenses  of  counsel),   accounting  expenses,  legal  expenses  including  the
reasonable  fees and expenses of one counsel to the holders  whose  Registerable
Shares  are being  registered,  printing  expenses,  expenses  of  underwriters,
excluding  discounts and  commissions but including  liability  insurance if the
Registrant so desires or the  underwriters  so require,  and the reasonable fees
and  expenses  of  any  necessary  special  experts)  in  connection  with  each
registration  pursuant to subparagraph  (a) or (b) above  (including the related
offerings  and  sales  by  holders  of   Registerable   Shares)  and  all  other
qualifications,  notifications or exemptions pursuant to subparagraph (a) or (b)
above.  Underwriting  discounts and commissions  relating to Registerable Shares
and any other expenses  incurred by Selling  Stockholders in connection with any
such registration shall be borne by such Selling Stockholders.

              (e) In connection with any registration  under subparagraph (a) or
(b) above, the Registrant hereby indemnifies the Selling Stockholders,  and each
underwriter thereof,  including each person, if any, who controls such holder or
underwriter  within the meaning of Section 15 of the Securities Act, against all
expenses,  losses,  claims,  damages and  liabilities  caused by any untrue,  or
alleged  untrue,  statement of a material  fact  contained  in any  registration
statement or prospectus or  notification  or offering  circular  (including  any
amendments or supplements thereto) or any preliminary  prospectus,  or caused by
any omission,  or alleged omission, to state therein a material fact required to
be stated  therein or necessary to make the statements  therein not  misleading,
except insofar as such expenses,  losses, claims, damages or liabilities of such
indemnified party are caused by any untrue statement or alleged untrue statement
that was  included  by the  Registrant  in any such  registration  statement  or
prospectus or  notification  or offering  circular  (including any amendments or
supplements  thereto)  in  reliance  upon and in  conformity  with,  information
furnished  in  writing to Issuer by such  indemnified  party  expressly  for use
therein, and the Registrant and each officer, director and controlling person of
the  Registrant  shall be indemnified  by such Selling  Stockholder,  or by such
underwriter,  as the case may be, for all such expenses, losses, claims, damages
and liabilities  caused by any untrue,  or alleged untrue,  statement,  that was
included by the Registrant in any such  registration  statement or prospectus or
notification  or offering  circular  (including  any  amendments or  supplements
thereto) in reliance  upon,  and in conformity  with,  information  furnished in
writing to the  Registrant by such holder or such  underwriter,  as the case may
be, expressly for such use.

                    Promptly  upon  receipt  by a party  indemnified  under this
subparagraph  (e) of notice  of the  commencement  of any  action  against  such
indemnified  party in respect of which indemnity or reimbursement  may be sought
against any  indemnifying  party under this  subparagraph  (e), such indemnified
party shall notify the indemnifying party in writing of the commencement of such
action, but the failure so to notify the indemnifying party shall not relieve it
of any liability which it may otherwise have to any indemnified party under this
subparagraph   (f)  unless  the  failure  to  give  such  notice  is  materially
prejudicial to an indemnifying  party's  ability to defend such action.  In case
notice of  commencement  of any such action  shall be given to the  indemnifying
party as above provided, the indemnifying party shall be entitled to participate
in and, to the extent it may wish,  jointly  with any other  indemnifying  party
similarly  notified,  to assume the defense of such  action at its own  expense,
with  counsel  chosen by it and  satisfactory  to such  indemnified  party.  The
indemnified  party shall have the right to employ  separate  counsel in any such
action and participate in the defense thereof, but the fees and expenses of such
counsel  (other than  reasonable  costs of  investigation)  shall be paid by the
indemnified  party unless (i) the  indemnifying  party either  agrees to pay the
same,  (ii) the  indemnifying  party  fails to assume the defense of such action
with counsel  reasonably  satisfactory  to the  indemnified  party, or (iii) the
indemnified  party has been advised by counsel  that one or more legal  defenses
may be available to the indemnifying  party that may be contrary to the interest
of the indemnified party, in which case the indemnifying party shall be entitled
to assume the defense of such action notwithstanding its obligation to bear fees
and  expenses of such  counsel.  No  indemnifying  party shall be liable for any
settlement  entered  into  without  its  consent,   which  consent  may  not  be
unreasonably withheld.

                    If the indemnification provided for in this subparagraph (e)
is unavailable to a party otherwise entitled to be indemnified in respect of any
expenses,  losses,  claims,  damages or liabilities referred to herein, then the
indemnifying  party, in lieu of indemnifying such party otherwise entitled to be
indemnified,  shall contribute to the amount paid or payable by such party to be
indemnified as a result of such expenses, losses, claims, damages or 

                                      -10-


liabilities  in such  proportion  as is  appropriate  to  reflect  the  relative
benefits  received  by  the  Registrant,   the  selling   stockholders  and  the
underwriters  from the offering of the securities and also the relative fault of
the Registrant, the selling stockholders and the underwriters in connection with
the statements or omissions  which resulted in such  expenses,  losses,  claims,
damages or liabilities,  as well as any other relevant equitable considerations.
The  amount  paid or  payable  by a party as a result of the  expenses,  losses,
claims, damages and liabilities referred to above shall be deemed to include any
legal or other fees or expenses  reasonably incurred by such party in connection
with investigating or defending any action or claim;  provided,  that in no case
shall any Selling Stockholder be responsible,  in the aggregate,  for any amount
in excess of the net offering proceeds  attributable to its Registerable  Shares
included  in the  offering.  No person  guilty of  fraudulent  misrepresentation
(within the meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution   from  any  person   who  was  not   guilty  of  such   fraudulent
misrepresentation.  Any  obligation by any holder to indemnify  shall be several
and not joint with other holders.

                    In connection with any registration pursuant to subparagraph
(a) or (b) above, the Registrant and each Selling  Stockholder  shall enter into
an agreement containing the indemnification provisions of this subparagraph (e).

              (f) Issuer shall comply with all reporting  requirements  and will
do all such other things as may be necessary to permit the  expeditious  sale at
any time of any  Option  Shares by Holder in  accordance  with and to the extent
permitted by any rule or  regulation  promulgated  by the SEC from time to time,
including,  without limitation,  Rules 144 and 144A. Issuer shall at its expense
provide Holder with any information  necessary in connection with the completion
and  filing  of any  reports  or forms  required  to be  filed  by it under  the
Securities Laws, or required  pursuant to any state securities laws or the rules
of any stock exchange.

              (g)  Issuer  will  pay all  stamp  taxes  in  connection  with the
issuance and the sale of the Option Shares and in  connection  with the exercise
of the Option,  and will save Holder  harmless,  without  limitation as to time,
against any and all liabilities, with respect to all such taxes.

       10. QUOTATION; LISTING. If Issuer Common Stock or any other securities to
be acquired  upon  exercise of the Option are then  authorized  for quotation or
trading  or listing on the Nasdaq  National  Market or any  national  securities
exchange, Issuer, upon the request of Holder, will promptly file an application,
if required,  to authorize for quotation or trading or listing the Option Shares
or other  securities  to be acquired  upon  exercise of the Option on the Nasdaq
National  Market  or any  national  securities  exchange  and  will use its best
efforts to obtain approval, if required, of such quotation or listing as soon as
practicable.

       11.  DIVISION OF OPTION.  This Agreement (and the Option granted  hereby)
are exchangeable,  without expense,  at the option of Holder,  upon presentation
and  surrender  of this  Agreement at the  principal  office of Issuer for other
Agreements providing for Options of different denominations entitling the holder
thereof to purchase in the  aggregate the same number of shares of Issuer Common
Stock purchasable  hereunder.  The terms "Agreement" and "Option" as used herein
include any other  Agreements and related  Options for which this Agreement (and
the Option granted hereby) may be exchanged.  Upon receipt by Issuer of evidence
reasonably  satisfactory to it of the loss, theft,  destruction or mutilation of
this  Agreement,  and (in the case of loss,  theft or destruction) of reasonably
satisfactory  indemnification,  and  upon  surrender  and  cancellation  of this
Agreement, if mutilated, Issuer will execute and deliver a new Agreement of like
tenor and date. Any such new Agreement  executed and delivered shall  constitute
an additional  contractual  obligation on the part of Issuer, whether or not the
Agreement  so  lost,  stolen,  destroyed  or  mutilated  shall  at any  time  be
enforceable by anyone.

       12.    MISCELLANEOUS.

              (A) EXPENSES.  Except as otherwise  provided in Section 9, each of
the parties  hereto shall bear and pay all costs and expenses  incurred by it or
on its  behalf  in  connection  with the  transactions  contemplated  hereunder,
including  fees  and  expenses  of its  own  financial  consultants,  investment
bankers, accountants and counsel.

                                      -11-


              (B) WAIVER AND  AMENDMENT.  Any provision of this Agreement may be
waived  at any  time by the  party  that is  entitled  to the  benefits  of such
provision. This Agreement may not be modified,  amended, altered or supplemented
except upon the  execution and delivery of a written  agreement  executed by the
parties hereto.

              (C) ENTIRE AGREEMENT;  NO THIRD-PARTY  BENEFICIARY;  SEVERABILITY.
This Agreement,  together with the Merger  Agreement and the other documents and
instruments  referred  to herein and  therein,  between  Grantee  and Issuer (a)
constitutes  the  entire  agreement  and  supersedes  all prior  agreements  and
understandings,  both written and oral,  between the parties with respect to the
subject  matter  hereof and (b) is not  intended to confer upon any person other
than the parties hereto (other than the  indemnified  parties under Section 8(f)
and any  transferees  of the Option Shares or any  permitted  transferee of this
Agreement  pursuant to Section 11(h)) any rights or remedies  hereunder.  If any
term, provision, covenant or restriction of this Agreement is held by a court of
competent   jurisdiction  or  Regulatory  Authority  to  be  invalid,   void  or
unenforceable,   the   remainder  of  the  terms,   provisions,   covenants  and
restrictions  of this Agreement  shall remain in full force and effect and shall
in no way be affected,  impaired or invalidated. If for any reason such court or
Regulatory  Authority  determines  that the  Option  does not  permit  Holder to
acquire  (or  exercise  all of its rights  with  respect  to) the full number of
shares of Issuer  Common  Stock as  provided  in  Sections 3 and 8 (as  adjusted
pursuant to Section 7), it is the express intention of Issuer to allow Holder to
acquire (or exercise its rights with respect to) such lesser number of shares as
may be permissible without any amendment or modification hereof.

              (D) GOVERNING LAW. This Agreement  shall be governed and construed
in  accordance  with the laws of the  State of  Delaware  without  regard to any
applicable conflicts of law rules.

              (E)  DESCRIPTIVE  HEADINGS.  The  descriptive  headings  contained
herein are for convenience of reference only and shall not affect in any way the
meaning or interpretation of this Agreement.

              (F) NOTICES. All notices and other communications  hereunder shall
be in writing  and shall be deemed  given if  delivered  personally,  telecopied
(with  confirmation)  or mailed by registered or certified mail (return  receipt
requested) to the parties at the addresses set forth in the Merger Agreement (or
at such other address for a party as shall be specified by like notice).

              (G) COUNTERPARTS.  This Agreement and any amendments hereto may be
executed in two counterparts, each of which shall be considered one and the same
agreement and shall become effective when both counterparts have been signed, it
being understood that both parties need not sign the same counterpart.

              (H)  ASSIGNMENT.  Neither  this  Agreement  nor any of the rights,
interests or obligations  hereunder or under the Option shall be assigned by any
of the parties  hereto  (whether by operation of law or  otherwise)  without the
prior  written  consent of the other  party,  except that Holder may assign this
Agreement  to a wholly  owned  Subsidiary  of Holder  and  Holder may assign its
rights  hereunder in whole or in part after the occurrence of a Purchase  Event.
Subject to the preceding  sentence,  this Agreement shall be binding upon, inure
to the  benefit  of and be  enforceable  by the  parties  and  their  respective
successors and assigns.

              (I) FURTHER ASSURANCES. In the event of any exercise of the Option
by Holder,  Issuer and Holder shall execute and deliver all other  documents and
instruments and take all other action that may be reasonably  necessary in order
to consummate the transactions provided for by such exercise.

              (J)  SPECIFIC  PERFORMANCE.  The  parties  hereto  agree that this
Agreement  may  be  enforced  by  either  party  through  specific  performance,
injunctive  relief and other  equitable  relief.  Both parties  further agree to
waive any requirement for the securing or posting of any bond in connection with
the obtaining of any such  equitable  relief and that this  provision is without
prejudice to any other  rights that the parties  hereto may have for any failure
to perform this Agreement.

                                      -12-


       IN WITNESS  WHEREOF,  Issuer and Grantee  have  caused this Stock  Option
Agreement to be signed by their respective  officers  thereunto duly authorized,
all as of the day and year first written above.

ATTEST:                                           THERATX, INCORPORATED


  /s/  Jonathan H. Glenn                          By:   /s/  John A. Bardis
  ----------------------                          -----------------------------
  Secretary                                             President


CORPORATE SEAL


ATTEST:                                           HELIAN HEALTH GROUP, INC.


  /s/  Michael K. McMillan                        By:   /s/  Lawrence S. Dolin
  ----------------------                          -----------------------------
  Secretary                                             Chief Executive Officer


CORPORATE SEAL




                                    EXHIBIT 2

                              STOCKHOLDER AGREEMENT


       THIS STOCKHOLDER AGREEMENT (this "Agreement") is made and entered into as
of August 29, 1995, by and among TheraTx,  Incorporated,  a Delaware corporation
("TheraTx"),  Helian Health Group, Inc., a Delaware corporation ("Helian"),  and
the undersigned (the "Stockholder").

       WHEREAS, the Stockholder desires that TheraTx, Atlanta Acquisition Corp.,
a wholly owned  subsidiary of TheraTx  ("Merger Sub"),  and Helian enter into an
Agreement  and Plan of Merger  dated the date hereof (as the same may be amended
or  supplemented,  the "Merger  Agreement") with respect to the merger of Merger
Sub with and into Helian (the "Merger"); and

       WHEREAS,  the  Stockholder  and Helian are executing this Agreement as an
inducement  to  TheraTx to enter into and  execute,  and to cause  Merger Sub to
enter into and execute,  the Merger  Agreement,  pursuant to which shares of the
$.01 par value common stock of Helian  ("Helian Common Stock") will be converted
into and  exchanged  for shares of the $.001 par value  common  stock of TheraTx
("TheraTx Common Stock");

       NOW, THEREFORE, in consideration of the execution and delivery by TheraTx
and Merger Sub of the Merger Agreement and the mutual covenants,  conditions and
agreements contained herein and therein, the parties agree as follows:

       1.  Representations  and  Warranties.   The  Stockholder  represents  and
warrants to TheraTx as follows:

         (a) The Stockholder is the record and beneficial owner of the number of
       shares  (such  "Stockholder's  Shares") of Helian  Common Stock set forth
       below such  Stockholder's  name on the signature page hereof.  Except for
       the  Stockholder's  Shares and any other  shares of Helian  Common  Stock
       subject hereto,  the Stockholder is not the record or beneficial owner of
       any  shares  of  Helian  Common  Stock.  This  Agreement  has  been  duly
       authorized,  executed  and  delivered  by,  and  constitutes  a valid and
       binding agreement of, the Stockholder, enforceable in accordance with its
       terms.

         (b) Neither  the  execution  and  delivery  of this  Agreement  nor the
       consummation by the Stockholder of the transactions  contemplated  hereby
       will result in a violation of, or a default under,  or conflict with, any
       contract,  trust, commitment,  agreement,  understanding,  arrangement or
       restriction  of any kind to which the  Stockholder is a party or bound or
       to which the  Stockholder's  Shares are subject.  If the  Stockholder  is
       married and the Stockholder's Shares constitute community property,  this
       Agreement  has been duly  authorized,  executed  and  delivered  by,  and
       constitutes a valid and binding agreement of, the  Stockholder's  spouse,
       enforceable   against   such  person  in   accordance   with  its  terms.
       Consummation by the Stockholder of the transactions  contemplated  hereby
       will not violate, or require any consent,  approval, or notice under, any
       provision  of  any  judgment,   order,  decree,  statute,  law,  rule  or
       regulation applicable to the Stockholder or the Stockholder's Shares.

         (c) The  Stockholder's  Shares and the certificates  representing  such
       Shares are now,  and at all times during the term hereof will be, held by
       the  Stockholder,  or by a nominee or  custodian  for the benefit of such
       Stockholder,  free and clear of all liens,  claims,  security  interests,
       proxies,  voting trusts or agreements,  understandings or arrangements or
       any other  encumbrances  whatsoever,  except for any such encumbrances or
       proxies arising hereunder.

         (d) No broker,  investment banker, financial adviser or other person is
       entitled to any broker's,  finder's, financial adviser's or other similar
       fee or commission in connection with the transactions contemplated hereby
       based upon arrangements made by or on behalf of the Stockholder.


         (e) The  Stockholder  is not acquiring any TheraTx  Common Stock with a
       view  to,  or for  offer or sale in  connection  with,  any  distribution
       thereof  (within  the  meaning  of the  Securities  Act) that would be in
       violation of the  securities  laws of the United States of America or any
       state thereof.  The Stockholder  acknowledges  that he, she or it (i) has
       such knowledge and experience in business and financial  matters and with
       respect  to  investments  in  securities  to enable  the  Stockholder  to
       understand  and evaluate the risks of an investment in the TheraTx Common
       Stock  to be  acquired  by the  Stockholder  and to  form  an  investment
       decision  with  respect  thereto  and is able to  bear  the  risk of such
       investment for an indefinite period and to afford a complete loss thereof
       and (ii) is an "accredited investor" as defined in Rule 501 of Regulation
       D under the Securities Act.

         (f) The  Stockholder  understands  and  acknowledges  that  TheraTx  is
       entering into, and causing Merger Sub to enter into, the Merger Agreement
       in  reliance  upon  the  Stockholder's  execution  and  delivery  of this
       Agreement.  The Stockholder  acknowledges  that the irrevocable proxy set
       forth in Section 4 is  granted in  consideration  for the  execution  and
       delivery of the Merger Agreement by TheraTx and Merger Sub

       2. Voting  Agreements.  The  Stockholder  agrees with,  and covenants to,
TheraTx as follows:

         (a) From and after the  occurrence of any "Purchase  Event" (as defined
       in the  Stock  Option  Agreement,  dated of even date  herewith,  between
       Helian and TheraTx  (the "Stock  Option  Agreement")),  at any meeting of
       stockholders  of Helian  called to vote upon the  Merger  and the  Merger
       Agreement  or at any  adjournment  thereof or in any other  circumstances
       upon which a vote,  consent or other  approval with respect to the Merger
       and the Merger  Agreement is sought (the  "Stockholders'  Meeting"),  the
       Stockholder shall vote (or cause to be voted) the Stockholder's Shares in
       favor of the Merger,  the  execution and delivery by Helian of the Merger
       Agreement,  and the  approval of the terms  thereof and each of the other
       transactions  contemplated  by the Merger  Agreement,  provided  that the
       terms of the Merger  Agreement  shall not have been amended to reduce the
       consideration payable in the Merger.

         (b) From and after the occurrence of any Purchase Event, at any meeting
       of stockholders  of Helian or at any adjournment  thereof or in any other
       circumstances upon which their vote, consent or other approval is sought,
       the  Stockholder  shall  vote (or cause to be voted)  such  Stockholder's
       Shares against (i) any merger  agreement or merger (other than the Merger
       Agreement   and  the  Merger),   consolidation,   combination,   sale  of
       substantial  assets,   reorganization,   recapitalization,   dissolution,
       liquidation  or  winding  up of or by  Helian  or (ii) any  amendment  of
       Helian's  Certificate  of  Incorporation  or Bylaws or other  proposal or
       transaction  involving Helian or any of its subsidiaries  which amendment
       or other proposal or transaction  would in any manner impede,  frustrate,
       prevent or nullify the Merger,  the Merger  Agreement or any of the other
       transactions  contemplated by the Merger Agreement (each of the foregoing
       in clause (i) or (ii) above, a "Competing Transaction").

         (c) This  Agreement  is  intended  to bind the  Stockholder  only  with
       respect to the specific matters set forth herein,  and shall not prohibit
       Stockholder  from acting in accordance  with his  fiduciary  duties as an
       officer or director of Helian.  Stockholder  will retain at all times the
       right to vote the Stockholder's Shares, in Stockholder's sole discretion,
       on all matters  other than those set forth in this Section 2 which are at
       any  time  or  from  time  to time  presented  to  Helian's  Stockholders
       generally.

       3. Covenants.  The Stockholder  agrees with, and covenants to, TheraTx as
follows:

         (a)  From  and  after  the  occurrence  of  any  Purchase  Event,   the
       Stockholder  shall not (i) transfer  (which term shall  include,  without
       limitation, for the purposes of this Agreement, any sale, gift, pledge or
       other  disposition),  or  consent to any  transfer  of, any or all of the
       Stockholder's  Shares or any  interest  therein,  except  pursuant to the
       Merger;  (ii)  enter  into any  contract,  option or other  agreement  or
       understanding  with  respect to any transfer of any or all of such Shares
       or any  interest  therein,  (iii)  grant any proxy,  power of attorney or
       other  authorization  in or with respect to such Shares,  except for this
       Agreement,  or (iv) deposit such Shares into a voting trust or enter into
       a voting agreement or arrangement with respect to such Shares;

                                      -2-


       provided, that the Stockholder may transfer (as defined above) any of the
       Stockholder's  Shares to any  family  member  of a person  or  charitable
       institution  which prior to the  Stockholders'  Meeting and prior to such
       transfer becomes,  a party to this Agreement bound by all the obligations
       of the "Stockholder" hereunder;  provided, that the Stockholder shall not
       transfer  or   otherwise   reduce  his  risk   relative  to  any  of  the
       Stockholder's  Shares  pursuant  to the  preceding  proviso and shall not
       transfer or  otherwise  reduce his risk  relative to any other  shares of
       Helian Common Stock if any such action,  either alone or in the aggregate
       with other action by other persons who may be affiliates of Helian, would
       preclude TheraTx's ability to account for the business  combination to be
       effected by the Merger as a pooling of interests.

         (b) If a majority of the  holders of Helian  Common  Stock  approve the
       Merger and the Merger Agreement, the Stockholder's Shares shall, pursuant
       to the terms of the Merger Agreement,  be exchanged for the consideration
       provided in the Merger Agreement.

         (c) The  Stockholder  shall  not,  nor shall it permit  any  investment
       banker,  attorney or other adviser or  representative  of the Stockholder
       to,  directly or  indirectly,  (i)  solicit,  initiate or  encourage  the
       submission   of,  any  takeover   proposal  or  (ii)  except  where,   in
       Stockholder's  capacity as an officer or  director of Helian,  failure to
       take such action would, upon advice of counsel,  conflict with the proper
       discharge of his fiduciary  duties under  applicable law,  participate in
       any discussions or negotiations  regarding,  or furnish to any person any
       information  with respect to, or take any other action to facilitate  any
       inquiries  or  the  making  of  any  proposal  that  constitutes,  or may
       reasonably  be  expected  to lead  to,  any  takeover  proposal.  For all
       purposes hereof,  "takeover  proposal" means any proposal for a merger or
       other business combination involving Helian or any of its subsidiaries or
       any proposal or offer to acquire in any manner,  directly or  indirectly,
       an equity interest in any voting securities of, or a substantial  portion
       of the assets of Helian or any of its subsidiaries, other than the Merger
       and the other transactions contemplated by the Merger Agreement and other
       than any transfer expressly permitted by the proviso to Section 3(a).

       4.     Grant of Irrevocable Proxy; Appointment of Proxy.

              (a) From and after  the  occurrence  of any  Purchase  Event,  the
Stockholder  hereby  irrevocably  grants to, and  appoints,  TheraTx and John A.
Bardis,  President  of TheraTx,  and Donald R. Myll,  Vice  President  and Chief
Financial  Officer of TheraTx,  in their  respective  capacities  as officers of
TheraTx,  and any individual who shall  hereafter  succeed to any such office of
TheraTx,   and  each  of  them   individually,   the  Stockholder's   proxy  and
attorney-in-fact  (with full power of substitution),  for and in the name, place
and  stead of the  Stockholder,  to vote the  Stockholder's  Shares,  or grant a
consent or approval  in respect of such  Shares (i) in favor of the Merger,  the
execution and delivery of the Merger Agreement and approval of the terms thereof
and  each  of the  other  transactions  contemplated  by the  Merger  Agreement,
provided that the terms of the Merger  Agreement  shall not have been amended to
reduce the  consideration  payable in the Merger and (ii) against any  Competing
Transaction.

              (b) The Stockholder  represents that any proxies  heretofore given
in respect of the  Stockholder's  shares are not irrevocable,  and that any such
proxies are hereby revoked.

              (c) The Stockholder  hereby affirms that the irrevocable proxy set
forth in this Section 4 is given in connection  with the execution of the Merger
Agreement, and that such irrevocable proxy is given to secure the performance of
the duties of the  Stockholder  under this  Agreement.  The  Stockholder  hereby
further affirms that the  irrevocable  proxy is coupled with an interest and may
under no circumstances be revoked.  The Stockholder hereby ratifies and confirms
all that such  irrevocable  proxy may  lawfully do or cause to be done by virtue
hereof.  Such  irrevocable  proxy is executed and intended to be irrevocable and
coupled with an interest in accordance with the provisions of Section 212 of the
Delaware General Corporation Law

       5. Certain  Events.  The  Stockholder  agrees that this Agreement and the
obligations  hereunder  shall  attach to the  Stockholder's  Shares and shall be
binding upon any person or entity to which legal or beneficial ownership of such
Shares shall pass,  whether by operation of law or otherwise,  including without
limitation the  Stockholder's  successors or assigns.  In the event of any stock
split, stock dividend, merger, reorganization,  recapitalization or other change
in the capital  structure of Helian  affecting the Helian  Common Stock,  or the

                                      -3-


acquisition  of  additional  shares  of  Helian  Common  Stock or  other  voting
securities  of Helian by any  Stockholder,  the number of Shares  subject to the
terms of this Agreement shall be adjusted  appropriately  and this Agreement and
the obligations hereunder shall attach to any additional shares of Helian Common
Stock  or other  voting  securities  of  Helian  issued  to or  acquired  by the
Stockholder.

       6. Stop  Transfer.  Helian agrees with,  and  covenants to,  TheraTx that
Helian shall not register the transfer of any  certificate  representing  any of
the Stockholder's  Shares, unless such transfer is made to TheraTx or Merger Sub
or otherwise in compliance with this Agreement.

       7.  Regulatory  Approvals.  Each of the  provisions of this  Agreement is
subject to compliance with applicable  regulatory  conditions and receipt of any
required regulatory approvals, waivers or consents.

       8. Further  Assurances.  The Stockholder  shall, upon request of TheraTx,
execute and deliver any  additional  documents and take such further  actions as
may  reasonably  be deemed by TheraTx to be  necessary or desirable to carry out
the provisions hereof and to vest the power to vote such Stockholder's Shares as
contemplated by Section 4 in TheraTx and the other irrevocable proxies described
therein at the expense of TheraTx.

       9.  Termination.  This  Agreement,  and all rights and obligations of the
parties hereunder;  shall terminate upon the first to occur of (x) the Effective
Time of the Merger or (y) the date upon which the Merger Agreement is terminated
in accordance with its terms;  provided that if an "Extension  Event" shall have
occurred as of or prior to  termination  of the Merger  Agreement,  then,  for a
period  of nine (9)  months  following  such  termination,  (i) the  rights  and
obligations  of the parties hereto under  Sections  2(b),  3(c),  4(a)(ii) and 5
hereof shall  continue in full force and effect and (ii) the  Stockholder  shall
not  transfer  any or all of the  Stockholder's  Shares in  connection  with any
Competing  Transaction or takeover proposal.  For purposes of the foregoing,  an
"Extension  Event" shall mean any  Preliminary  Purchase  Event (as such term is
defined in the Stock Option Agreement) or any Purchase Event.

       10.    Miscellaneous.

              (a)  Capitalized  terms  used and not  otherwise  defined  in this
Agreement  shall have the  respective  meanings  assigned  to them in the Merger
Agreement.

              (b)   All   notices,   requests,   claims,   demands   and   other
communications  under this  Agreement  shall be in  writing  and shall be deemed
given if delivered  personally or sent by overnight courier  (providing proof of
delivery) to the parties at the  following  addresses  (or at such other address
for a party as shall be specified  by like  notice):  (i) if to TheraTx,  to the
address set forth in Section  11.8 of the Merger  Agreement;  and (ii) if to the
Stockholder, to its address shown below its signature on the last page hereof.

              (c) The headings  contained in this  Agreement  are for  reference
purposes only and shall not affect in any way the meaning or  interpretation  of
this Agreement.

              (d) This  Agreement  may be executed in two or more  counterparts,
all of which shall be considered one and the same agreement.

              (e)  This  Agreement  (including  the  documents  and  instruments
referred to herein)  constitutes the entire agreement,  and supersedes all prior
agreements  and  understandings,  both written and oral,  among the parties with
respect to the subject matter hereof.

              (f)  This  Agreement  shall  be  governed  by,  and  construed  in
accordance with, the laws of the State of Delaware,  regardless of the laws that
might otherwise govern under applicable principles of conflicts of laws thereof.

              (g) Neither  this  Agreement  nor any of the rights,  interests or
obligations  under this  Agreement  shall be assigned,  in whole or in part,  by
operation of law or otherwise,  by any of the parties  without the prior 

                                      -4-


written  consent  of the other  parties,  except as  expressly  contemplated  by
Section 3(a). Any assignment in violation of the foregoing shall be void.

              (h) The Stockholder agrees that irreparable damage would occur and
that TheraTx would not have any adequate  remedy at law in the event that any of
the  provisions of this  Agreement  were not performed in accordance  with their
specific terms or were otherwise breached. It is accordingly agreed that TheraTx
shall be entitled to an injunction  or  injunctions  to prevent  breaches by the
Stockholder  of  this  Agreement  and to  enforce  specifically  the  terms  and
provisions of this  Agreement in any court of the United  States  located in the
State of  Delaware  or in Delaware  state  court,  this being in addition to any
other remedy to which they are entitled at law or in equity.  In addition,  each
of the  parties  hereto  (i)  consents  to  submit  such  party to the  personal
jurisdiction  of any  Federal  court  located  in the State of  Delaware  or any
Delaware  state court in the event any dispute  arises out of this  Agreement or
any of the transactions  contemplated  hereby,  (ii) agrees that such party will
not  attempt to deny or defeat  such  personal  jurisdiction  by motion or other
request for leave from any such court and (iii)  agrees that such party will not
bring  any  action  relating  to  this  Agreement  or any  of  the  transactions
contemplated hereby in any court other than a Federal court sitting in the State
of Delaware or a Delaware state court.

              (i) If any term, provision, covenant or restriction herein, or the
application  thereof to any  circumstance,  shall,  to any extent,  be held by a
court of  competent  jurisdiction  to be  invalid,  void or  unenforceable,  the
remainder of the terms,  provisions,  covenants and restrictions  herein and the
application thereof to any other  circumstances,  shall remain in full force and
effect, shall not in any way be affected, impaired or invalidated,  and shall be
enforced to the fullest extent permitted by law.

              (j) No  amendment,  modification  or  waiver  in  respect  of this
Agreement shall be effective against any party unless it shall be in writing and
signed by such party.

       IN WITNESS WHEREOF,  the undersigned  parties have executed and delivered
this Stockholders Agreement as of the day and year first above written.

                                      THERATX, INCORPORATED

                                      By:  /s/  John A. Bardis
                                           ------------------------------------
                                           President

                                      HELIAN HEALTH GROUP, INC.

                                      By:  /s/  Lawrence S. Dolin
                                           ------------------------------------
                                           Chief Executive Officer

                                      STOCKHOLDER:  Nate Dolin by

                                      /s/  Lawrence S. Dolin, Attorney-in-Fact
                                           ------------------------------------
                                      Name:  Lawrence S. Dolin
                                      Address:  16111 Parkland Drive
                                                Shaker Heights, Ohio  44120
                                      Number of Shares
                                      Beneficially Owned:  20,000


                                      -5-




                                    Names of Other Persons in Whose Names Shares
                                    Are Held:

                                    --------------------------------------------

                                    --------------------------------------------

                                    --------------------------------------------


                                      -6-



                                    EXHIBIT 3

                       FORM OF HELIAN AFFILIATE AGREEMENT

TheraTx, Incorporated
400 Northridge Road, Suite 400
Atlanta, Georgia 30350

Attention:     John A. Bardis, President

Gentlemen:

       The undersigned is a shareholder of Helian Health Group, Inc. ("Helian"),
a corporation organized and existing under the laws of the State of Delaware and
located in  Monterey,  California,  and will  become a  shareholder  of TheraTx,
Incorporated ("TheraTx") pursuant to the transactions described in the Agreement
and Plan of Merger, dated as of August 29, 1995 (the "Agreement"),  by and among
Helian,  TheraTx and a wholly owned subsidiary of TheraTx ("Merger Sub").  Under
the terms of the Agreement,  Merger Sub will be merged into and with Helian (the
"Merger"),  and the shares of the $.01 par value common stock of Helian ("Helian
Common  Stock") will be converted into and exchanged for shares of the $.001 par
value common stock of TheraTx ("TheraTx Common Stock"). This Affiliate Agreement
represents an agreement  between the undersigned and TheraTx  regarding  certain
rights and  obligations  of the  undersigned  in  connection  with the shares of
TheraTx to be received by the undersigned as a result of the Merger.

       In consideration of the Merger and the mutual covenants contained herein,
the undersigned and TheraTx hereby agree as follows:

       1. Affiliate  Status.  The undersigned  understands and agrees that as to
Helian the  undersigned is an  "affiliate"  under Rule 145(c) as defined in Rule
405 of the Rules and  Regulations  of the  Securities  and  Exchange  Commission
("SEC")  under the  Securities  Act of 1933, as amended  ("1933  Act"),  and the
undersigned  anticipates  that he will be such an "affiliate" at the time of the
meeting of the  shareholders  of Helian to be held to  consider  approval of the
Merger and at the time the Merger is effective.

       2. Initial  Restriction on Disposition.  The undersigned  agrees that the
undersigned will not sell,  transfer,  or otherwise dispose of the undersigned's
interests in, or reduce the undersigned's risk relative to, any of the shares of
TheraTx Common Stock into which the undersigned's  shares of Helian Common Stock
are  converted  upon  consummation  of the  Merger  until  such time as  TheraTx
notifies the undersigned that the requirements of SEC Accounting  Series Release
Nos. 130 and 135 ("ASR 130 and 135") have been met. The undersigned  understands
that ASR 130 and 135 relate to publication  of financial  results of post-Merger
combined  operations of TheraTx and Helian.  TheraTx agrees that it will publish
such results within 45 days after the end of the first fiscal quarter of TheraTx
containing the required  period of post-Merger  combined  operations and that it
will notify the undersigned promptly following such publication.

       3. Covenants and Warranties of Undersigned.  The undersigned  represents,
warrants, and agrees that:

         (a) During the 30 days immediately  preceding the Effective Time of the
       Merger, the undersigned will not sell, transfer,  or otherwise dispose of
       his  interests  in, or reduce his risk  relative to, any of the shares of
       TheraTx  Common Stock or Helian  Common Stock  beneficially  owned by the
       undersigned as of the date of the Shareholders' Meeting of Helian held to
       approve the Merger.

         (b) The TheraTx Common Stock received by the undersigned as a result of
       the Merger  will be taken for the  undersigned's  own account and not for
       others, directly or indirectly, in whole or in part.

         (c) TheraTx has informed the undersigned  that any  distribution by the
       undersigned  of TheraTx  Common Stock has not been  registered  under the
       1933 Act and that shares of TheraTx Common Stock 




       received  pursuant to the Merger can only be sold by the  undersigned (1)
       following  registration under the 1933 Act, or (2) in conformity with the
       volume and other  requirements  of Rule 145(d)  promulgated by the SEC as
       the same now exist or may hereafter be amended, or (3) to the extent some
       other exemption from registration  under the 1933 Act might be available.
       The undersigned understands that TheraTx is under no obligation to file a
       registration  statement  with the SEC  covering  the  disposition  of the
       undersigned's  shares of TheraTx Common Stock or to take any other action
       necessary to make  compliance  with an exemption  from such  registration
       available.

         (d) The  undersigned  will,  and will cause  each of the other  parties
       whose  shares  are  deemed to be  beneficially  owned by the  undersigned
       pursuant to Section 7 hereof to, have all shares of Helian  Common  Stock
       beneficially  owned  by the  undersigned  registered  in the  name of the
       undersigned or such parties,  as applicable,  prior to the effective date
       of the Merger and not in the name of any bank, broker-dealer, nominee, or
       clearinghouse.

       4. Restrictions on Transfer. The undersigned  understands and agrees that
stop transfer  instructions  with respect to the shares of TheraTx  Common Stock
received by the  undersigned  pursuant to the Merger will be given to  TheraTx's
transfer  agent  and that  there  will be placed  on the  certificates  for such
shares, or shares issued in substitution thereof, a legend stating in substance:

       "The shares  represented by this  certificate  were issued  pursuant to a
       business  combination  which is accounted for as a "pooling of interests"
       and may not be sold,  nor may the owner thereof  reduce the owner's risks
       relative  thereto in any way,  until such time as  TheraTx,  Incorporated
       ("TheraTx") has published the financial results covering at least 30 days
       of combined  operations  after the effective  date of the merger  through
       which the business  combination  was  effected.  In addition,  the shares
       represented  by  this  certificate  may  not  be  sold,  transferred,  or
       otherwise  disposed  of except  or unless  (1)  covered  by an  effective
       registration  statement under the Securities Act of 1933, as amended, (2)
       in  accordance  with (i) Rule 145(d) (in the case of shares  issued to an
       individual  who is not an  affiliate of TheraTx) or (ii) Rule 144 (in the
       case of shares issued to an individual who is an affiliate of TheraTx) of
       the Rules and  Regulations of such Act, or (3) in accordance with a legal
       opinion satisfactory to counsel for TheraTx that such sale or transfer is
       otherwise exempt from the registration requirements of such Act."

Such  legend  will  also  be  placed  on any  certificate  representing  TheraTx
securities  issued  subsequent  to the original  issuance of the TheraTx  Common
Stock  pursuant to the Merger as a result of any  transfer of such shares or any
stock dividend,  stock split, or other  recapitalization  as long as the TheraTx
Common  Stock  issued to the  undersigned  pursuant  to the  Merger has not been
transferred in such manner to justify the removal of the legend therefrom.  Upon
the  request  of  the   undersigned,   TheraTx  shall  cause  the   certificates
representing  the shares of TheraTx  Common Stock issued to the  undersigned  in
connection  with the  Merger  to be  reissued  free of any  legend  relating  to
restrictions  on  transfer  by virtue of ASR 130 and 135 as soon as  practicable
after the  requirements  of ASR 130 and 135 have been met. In  addition,  if the
provisions of Rules 144 and 145 are amended to eliminate restrictions applicable
to the TheraTx Common Stock received by the undersigned  pursuant to the Merger,
or at the  expiration  of the  restrictive  period  set  forth  in Rule  145(d),
TheraTx,  upon the  request  of the  undersigned,  will  cause the  certificates
representing  the shares of TheraTx  Common Stock issued to the  undersigned  in
connection  with the Merger to be  reissued  free of any legend  relating to the
restrictions  set forth in Rules 144 and  145(d)  upon  receipt by TheraTx of an
opinion of its counsel to the effect that such legend may be removed.

       5.  Understanding  of Restrictions on  Dispositions.  The undersigned has
carefully  read the Agreement and this Affiliate  Agreement and discussed  their
requirements and impact upon the  undersigned's  ability to sell,  transfer,  or
otherwise  dispose  of the  shares  of  TheraTx  Common  Stock  received  by the
undersigned, to the extent he believes necessary, with the undersigned's counsel
or counsel for Helian.

       6.  Transfer  Under Rule 145(d).  If the  undersigned  desires to sell or
otherwise   transfer  the  shares  of  TheraTx  Common  Stock  received  by  the
undersigned  in  connection  with the Merger at any time during the  restrictive
period set forth in Rule 145(d),  the  undersigned  will  provide the  necessary
representation  letter to the 

                                      -2-



transfer  agent  for  TheraTx   Common  Stock  together  with  such   additional
information as the transfer agent may reasonably  request.  If TheraTx's counsel
concludes that such proposed sale or transfer  complies with the requirements of
Rule 145(d), TheraTx shall cause such counsel to provide such opinions as may be
necessary to TheraTx's  Transfer Agent so that the  undersigned may complete the
proposed sale or transfer.

       7.  Acknowledgments.  The  undersigned  recognizes  and  agrees  that the
foregoing provisions also apply to all shares of the capital stock of Helian and
TheraTx that are deemed to be beneficially owned by the undersigned  pursuant to
applicable  federal  securities laws, which the undersigned  agrees may include,
without  limitation,  shares owned or held in the name of (i) the  undersigned's
spouse, (ii) any relative of the undersigned or of the undersigned's  spouse who
has the same  home as the  undersigned,  (iii)  any trust or estate in which the
undersigned, the undersigned's spouse, and any such relative collectively own at
least a 10%  beneficial  interest  or of which  any of the  foregoing  serves as
trustee, executor, or in any similar capacity, and (iv) any corporation or other
organization in which the undersigned,  the undersigned's  spouse,  and any such
relative  collectively own at least 10% of any class of equity  securities or of
the equity interest.  The undersigned further recognizes that, in the event that
the  undersigned  is a director  or officer of TheraTx or becomes a director  or
officer of TheraTx upon consummation of the Merger, among other things, any sale
of  TheraTx  Common  Stock by the  undersigned  within a period of less than six
months  following the effective time of the Mergers may subject the  undersigned
to liability  pursuant to Section 16(b) of the Securities  Exchange Act of 1934,
as amended.

       8.  Miscellaneous.  This  Affiliate  Agreement is the complete  agreement
between  TheraTx and the undersigned  concerning the subject matter hereof.  Any
notice required to be sent to any party hereunder shall be sent by registered or
certified mail, return receipt  requested,  using the addresses set forth herein
or such other  address as shall be  furnished  in writing by the  parties.  This
Affiliate Agreement shall be governed by the laws of the State of Delaware.

       This Affiliate Agreement is executed as of the ____ day of August, 1995.

                           Very truly yours,

                           ---------------------------
                           Signature

                           ---------------------------
                           Print Name

                           ---------------------------
                           ---------------------------
                           ---------------------------
                           Address

                           [add below the signatures of all registered owners
                           of shares deemed beneficially owned by the affiliate]

                           ---------------------------
                           Name:

                           ---------------------------
                           Name:

                                      -3-



AGREED TO AND ACCEPTED as of
_______________, 1995

THERATX, INCORPORATED


By:_________________________


                                      -4-


                                    EXHIBIT 4

          MATTERS AS TO WHICH GRAY CARY WARE & FREIDENRICH SHALL OPINE


       1. Helian is a corporation  duly organized,  validly existing and in good
standing under the laws of the State of Delaware with full  corporate  power and
authority  to carry on the  business in which it is engaged as  described in the
Proxy Statement and to own and use its material Assets.

       2. The execution and delivery of the  Agreement and  compliance  with its
terms do not and will not violate or contravene any provision of the Certificate
of  Incorporation  or Bylaws of Helian  or, to our  knowledge  but  without  any
independent investigation, any Law, Order, Permit or Contract to which Helian or
any of its Subsidiaries is a party or by which Helian or any of its Subsidiaries
or any of their respective material Assets is bound.

       3. The  Agreement  has been duly and validly  executed  and  delivered by
Helian, and assuming valid authorization,  execution and delivery by TheraTx and
merger Sub,  constitutes a valid and binding agreement of Helian  enforceable in
accordance  with  its  terms,   except  as  enforceability  may  be  limited  by
bankruptcy,  insolvency,  reorganization,  or similar laws affecting  creditors'
rights  generally,  provided,  however,  that we  express  no  opinion as to the
availability of the equitable remedy of specific performance.

       4. Helian has an authorized, issued and outstanding capitalization as set
forth in the Agreement  (except for subsequent  issuances,  if any,  pursuant to
exercises  of Helian  Options  which were  disclosed  in the  Helian  Disclosure
Memorandum), and all of the issued and outstanding shares of Helian Common Stock
were duly  authorized and validly issued and are fully paid and  non-assessable.
To our knowledge, Helian has no outstanding Rights that are not disclosed in the
Helian Disclosure  Memorandum.  None of the outstanding  shares of Helian Common
Stock has been issued in violation of any preemptive  rights existing under Law,
the Certificate of Incorporation or Bylaws of Helian, or otherwise known to us.







                                    EXHIBIT 5

                  MATTERS AS TO WHICH ALSTON & BIRD SHALL OPINE


       1. TheraTx is a corporation duly organized,  validly existing and in good
standing under the laws of the State of Delaware with full  corporate  power and
authority  to carry on the  business in which it is engaged as  described in the
Proxy Statement and to own and use its material Assets.

       2. Merger Sub is a corporation  duly organized,  validly  existing and in
good standing under the laws of the State of Delaware with full corporate  power
and  authority  to carry on the  business in which it is engaged as described in
the Proxy Statement and to own and use its material Assets.

       3. The execution and delivery of the  Agreement and  compliance  with its
terms do not and will not violate or contravene  any provision of the respective
Certificates  of  Incorporation  or Bylaws of  TheraTx  or Merger Sub or, to our
knowledge but without any independent investigation, any Law, Order or Permit to
which  TheraTx  or Merger  Sub is a party or by which  TheraTx  or Merger Sub is
bound.

       4. The Agreement has been duly and validly executed and delivered by each
of TheraTx and Merger Sub,  and  assuming  valid  authorization,  execution  and
delivery by Helian, constitutes a valid and binding agreement of each of TheraTx
and  Merger  Sub   enforceable   in  accordance   with  its  terms,   except  as
enforceability  may be limited by  bankruptcy,  insolvency,  reorganization,  or
similar laws affecting creditors' rights generally,  provided,  however, that we
express no opinion as to the  availability  of the equitable  remedy of specific
performance.

       5. The shares of TheraTx Common Stock to be issued to the shareholders of
Helian  as  contemplated  by  the  Agreement  have  been  registered  under  the
Securities  Act of 1933,  as amended,  and when  properly  issued and  delivered
following  consummation of the Merger will be duly  authorized,  validly issued,
fully paid and non-assessable under the Delaware General Corporation Law.







                                    Exhibit 6

                                PRICING SCHEDULE


       As used in the  Agreement,  each Base Period  Trading Price in the tables
below is  referred to as a  "Reference  Price" and each  corresponding  Exchange
Ratio is referred to as a "Reference Exchange Ratio."

              Base Period Trading Price                     Exchange Ratio
              --------------------------               ------------------------
                       $13.375                                  0.4486
                       $13.500                                  0.4466
                       $13.625                                  0.4446
                       $13.750                                  0.4425
                       $13.875                                  0.4405
                       $14.000                                  0.4385 
                       $14.125                                  0.4365
                       $14.250                                  0.4345
                       $14.375                                  0.4325
                       $14.500                                  0.4304
                       $14.625                                  0.4284
                       $14.750                                  0.4264
                       $14.875                                  0.4244
                       $15.000                                  0.4224
                       $15.125                                  0.4204
                       $15.250                                  0.4183
                       $15.375                                  0.4163
                       $15.500                                  0.4143
                       $15.625                                  0.4123
                       $15.750                                  0.4103
                       $15.875                                  0.4083
                       $16.000                                  0.4063

              Base Period Trading Price                     Exchange Ratio
              --------------------------               -------------------------

                       $10.000                                  0.4809
                       $10.125                                  0.4788
                       $10.250                                  0.4768
                       $10.375                                  0.4748
                       $10.500                                  0.4728
                       $10.625                                  0.4708
                       $10.750                                  0.4688
                       $10.875                                  0.4667
                       $11.000                                  0.4647
                       $11.125                                  0.4627
                       $11.250                                  0.4607
                       $11.375                                  0.4587
                       $11.500                                  0.4567
                       $11.625                                  0.4546
                       $11.750                                  0.4526
                       $11.875                                  0.4506
                       $12.000                                  0.4486




        If the  Base  Period  Trading  Price  ("BPTP")  falls  between  any  two
Reference Prices set forth above ("RP"),  the Exchange Ratio shall be determined
by mathematical  interpolation between the two corresponding  Reference Exchange
Ratios ("RER"), utilizing the following formula:

ER   =   Next Lower  RER* - (Next  Lower RP* - BPTP) x
                            ------------------------
                               RP - Next Higher RP)

         (Next  Lower RER - Next Higher RER) (Next Lower

For example, if the BPTP were $14.0125:

ER   =   0.4385  -  (14.000 - 14.0125)  x  (0.4385 - 0.4365)
                    ------------------
                    (14.000 - 14.125)

ER   =   0.4383

------------

*      Next  Lower RP refers to the RP closest to the BPTP that is less than the
       BPTP,  while the Next  Higher RP means the RP closest to the BPTP that is
       greater than the BPTP.  Next Higher ER and Next Lower ER refer to the ERs
       that correspond to the Next Higher RP and Next Lower RP, respectively, as
       shown in the foregoing table.