MERGER AND REORGANIZATION AGREEMENT

         THIS MERGER AND REORGANIZATION  AGREEMENT dated as of April 4, 2000, is
entered  into  among   PRE-CELL   SOLUTIONS,   INC.,   a  Colorado   corporation
("Pre-Cell"),   USI  MERGER  CORP.,  a  Georgia   corporation  and  wholly-owned
subsidiary  of Pre-Cell  ("Merger  Subsidiary"),  USINTELLICOM,  INC., a Georgia
corporation   ("USI"),   and  Ronald  I.  Kindland   (Kindland  and  such  other
stockholders being referred to collectively herein as, the "Stockholders").

         WHEREAS,  the  Stockholders  are the  owners of all of the  outstanding
capital stock of USI in the respective amounts set forth in Exhibit A;

         WHEREAS,  subject  to the  terms  and  conditions  of this  Merger  and
Reorganization  Agreement  ("Agreement"),  the Parties  desire to  consummate  a
merger, as contemplated herein, pursuant to which the Merger Subsidiary shall be
merged  with and  into USI so that USI  becomes  a  wholly-owned  subsidiary  of
Pre-Cell; and

         WHEREAS, for Federal income tax purposes,  the parties intend that such
merger qualify as a reorganization under the provisions of Section 368(a) of the
United States Internal Revenue Code of 1986, as amended (the "Code").

         IT IS AGREED:

                                    ARTICLE I
                                   THE MERGER

         Section  1.1 The Merger.  Upon the terms and subject to the  conditions
hereof,  and in accordance with the relevant  provisions of the Georgia Business
Corporation Code (the "GBCC"),  the Merger Subsidiary and USI shall consummate a
merger  (the  "Merger")  of the  Merger  Subsidiary  with  and  into  USI at the
Effective  Time (as  hereinafter  defined) in accordance  with the provisions of
this  Agreement.  Following  the Merger,  USI shall  continue  as the  surviving
corporation (the "Surviving Corporation") and shall continue its existence under
the laws of the State of Georgia and the separate corporate  existence of Merger
Subsidiary shall cease.

         Section  1.2  Effective  Time.  At the  Closing,  USI  and  the  Merger
Subsidiary shall file with the Georgia Secretary of State in accordance with the
GBCC an  executed  copy of the  Certificate  of Merger in the form of  Exhibit B
hereto (the  "Certificate  of Merger")  reflecting the Merger.  The Merger shall
become  effective at such time as the Certificate of Merger is so filed with the
Georgia Secretary of State (the "Effective Time"). To the extent permitted under



law, Kindland,  on behalf of and with the authority of the Stockholders,  hereby
waives  publication of the Articles of Merger.  Kindland,  on behalf of and with
the requisite  authority of the Stockholders,  hereby agrees to the adoption and
filing of the Certificate of Merger as required under the GBCC, and acknowledges
and agrees that his signature hereto, on behalf of himself and the Stockholders,
shall constitute the unanimous  written consent of the Stockholders for purposes
of authorizing  the foregoing by unanimous  written  consent of  stockholders as
provided under the GBCC.

         Section 1.3 Effects of the  Merger.  The Merger  shall have the effects
set forth in Section OCGA-14.2-1106 of the GBCC.

         Section 1.4 Certificate of Incorporation  and By-Laws.  The Articles of
Incorporation  and the  By-Laws of Merger  Subsidiary  shall be the  Articles of
Incorporation and By-Laws of the Surviving Corporation at the Effective Time.

         Section 1.5 Directors and Officers of the Surviving Corporation. At the
Effective Time, the Board of Directors and officers of the Surviving Corporation
shall consist of the persons  listed in Schedule 1.5, each to serve until his or
her successor is elected and qualified.

                                   ARTICLE II
                    CONVERSION OF SHARES AND RELATED MATTERS

         Section 2.1  Conversion of Outstanding  Stock of the Merger  Subsidiary
and  Exchange  for Stock of  Surviving  Corporation.  Upon  consummation  of the
Merger,  all 100  shares  of the  common  stock,  no par  value,  of the  Merger
Subsidiary  ("Merger  Subsidiary  Stock")  outstanding  immediately prior to the
Effective Time shall, by virtue of the Merger and without any action on the part
of the holder  thereof,  be converted  into and  exchanged for 100 shares of the
common stock, no par value, of USI ("Surviving  Corporation Stock"), which shall
represent  all of the issued  and  outstanding  shares of  capital  stock of the
Surviving  Corporation  immediately  after the  Effective  Time.  All  shares of
Surviving  Corporation  Stock shall be fully paid and  non-assessable.  Promptly
after the Effective  Time, the Surviving  Corporation  shall issue to Pre-Cell a
stock certificate  representing the 100 shares of Surviving Corporation Stock in
exchange for the  certificate or  certificates  which formerly  represented  100
shares of Merger Subsidiary Stock, which stock certificates shall be immediately
canceled.

         Section 2.2  Conversion  of USI Shares.  Subject to the  provisions  of
Section 1.2, all of the outstanding shares of common stock, no par value, of USI
that are outstanding  immediately prior to the Effective Time (the "USI Shares")
shall be converted  into the right to receive,  at the Closing,  an aggregate of
11,440,000  shares (the "Stock  Consideration")  of Pre-Cell's common stock, par
value $.01 per share ("Pre-Cell Stock"),

         Section 2.3 Pre-Cell  Stock.  The Pre-Cell  Stock,  upon issuance under
Section 2.2 shall be subject to the  restrictions of Rule 144 promulgated by the
United States of America  Securities and Exchange  Commission  (the "SEC") under
the Securities Act of 1933, as amended (the  "Securities  Act"),  until properly
disposed of in accordance  with the terms and  conditions of Rule 144 or another
exemption to the registration  requirements of the Securities Act. The number of

                                     Page 2


shares  of  Pre-Cell  Stock  constituting  the  consideration   payable  to  any
Stockholder shall be rounded up or down to the nearest whole number of shares.

         Section 2.4  Registration Rights.

         (a) General.  As soon as  practicable  after the Closing  Date,  but no
later than  September 30, 2000 in any event,  Pre-Cell shall file a registration
statement with the United States Securities and Exchange  Commission  ("SEC") to
register  (i) the  Pre-Cell  Shares  issued to USI  Stockholders  as the  Merger
Consideration hereunder;  (ii) those Pre-Cell Shares to be issued to the holders
of the  Converted  Options  upon  the  exercise  of  the  Converted  Options  as
contemplated  thereby;  and  (iii)  those  Pre-Cell  shares  to be issued to USI
Stockholders   under  the  Option  Pool  Agreement  (as   hereinafter   defined)
(collectively,  the "Holders") under the Securities Act of 1933, as amended (the
"Securities  Act"),  or shall include all such Pre-Cell Shares in a registration
statement  which has been filed but not been  declared  effective,  if allowable
under the Securities Act and the rules promulgated thereunder,  so that they may
be sold by the Holders to the extent legally permissible. Pre-Cell shall use its
reasonable efforts to cause such registration statement to be declared effective
by the SEC no later than November 30, 2000, and once such registration statement
is declared  effective,  to keep it effective  until all  securities  registered
thereby are either sold or can be sold under an exemption from the  registration
requirements  of the Securities  Act.  Pre-Cell shall bear all fees and expenses
incurred  by  it  in  connection   with  the  preparation  and  filing  of  such
registration  statement.  Each  Holder  will  pay all  brokerage  discounts  and
commissions  with  respect to the sale of his  Pre-Cell  Shares and any fees and
expenses  of  separate  counsel  and  accountants  which may be  retained by the
Holders.  Each person for whom Pre-Cell  Shares are to be registered  for resale
under  such  registration  statement  will be  required  to  execute  a  lock-up
agreement  in the form  annexed  hereto as Exhibit F pursuant  to which he shall
agree to (i) not sell any Pre-Cell  Shares  acquired by him hereunder  until the
six month  anniversary  of the  Closing  Date;  and (ii) only to sell up to that
percentage  of the Pre-Cell  Shares owned by him as  determined  by the Pre-Cell
Board of Directors during any three-month  period beginning six months after the
Closing Date and ending eighteen months after the closing date.

         Notwithstanding  any other  provision of this Section 2.4, (i) Pre-Cell
shall have no obligation  hereunder to register the Pre-Cell Shares on behalf of
a Holder unless (a) such Holder executes a lock-up  agreement as described above
and (b) the Holder  provides  Pre-Cell with all of the information and documents
with respect to his ownership of the Pre-Cell  Shares,  compliance with the law,
manner  of  proposed  disposition  and such  other  matters  as  Pre-Cell  shall
reasonably request for disclosure in the registration  statement;  (ii) Pre-Cell
shall not be  obligated  to  register  any of the  Pre-Cell  Shares  unless such
registration is then permitted by law and the policy of the SEC; and (iii) it is
understood  and agreed that there may be periods of up to 90 days in duration in
any year during which the  registration  statement filed in accordance with this
Section lapses into  noneffectiveness  as a result of (a) the  unavailability of
financial  statements required to update such registration  statement or (b) the
occurrence  of material  events which require the filing of an amendment to such
registration statement.

                                     Page 3



         (b) Indemnification

             (i)  Pre-Cell  shall  indemnify  and hold  harmless,  to the extent
permitted by law,  each Holder,  its officers and  directors and each person who
controls a Holder  (within  the meaning of Section 15 of the  Securities  Act or
Section  20(a)  of the  Exchange  Act)  against  all  losses,  claims,  damages,
liabilities  and  expenses  (including  reasonable  attorneys'  fees,  costs and
expenses)  caused by any untrue or alleged  untrue  statement  of material  fact
contained  in any  registration  statement  filed  pursuant  to Section  2.5(a),
prospectus or  preliminary  prospectus  or any  amendment  thereof or supplement
thereto,  or any omission or alleged  omission of a material fact required to be
stated  therein or  necessary  to make the  statements  therein not  misleading,
except  insofar as the same are caused by or  contained  in or omitted  from any
information furnished in writing to Pre-Cell by such Holder for use therein.

             (ii) In  connection  with  any  registration  statement  in which a
Holder is  participating,  such Holder will furnish to Pre-Cell such information
as Pre-Cell reasonably requests for use in connection with any such registration
statement or  prospectus,  and to the extent  permitted by law,  will  indemnify
Pre-Cell,  its  directors  and officers  and each person who  controls  Pre-Cell
(within the meaning of Section 15 of the  Securities Act or Section 20(a) of the
Exchange  Act) against any losses,  claims,  damages,  liabilities  and expenses
(including  reasonable  attorneys' fees, costs and expenses)  resulting from any
untrue  statement  of material  fact  contained in the  registration  statement,
prospectus or  preliminary  prospectus  or any  amendment  thereof or supplement
thereto or any  omission of a material  fact  required  to be stated  therein or
necessary to make the statements therein not misleading,  but only to the extent
that such  untrue  statement  or omission is  contained  in or omitted  from any
information  so  furnished  by such  Holder in writing  which  states  that such
information is for use in such registration statement, prospectus or preliminary
prospectus or any amendment or supplement thereto.

             (iii) Any person  entitled to  indemnification  under this  Section
2.4(b)  will (i) give prompt  written  notice to the  indemnifying  party of any
claim with respect to which it seeks indemnification; provided, that the failure
to give such notice shall not relieve the indemnifying  party of its obligations
hereunder;  and (ii) unless in such indemnified  party's  reasonable  judgment a
conflict of interest between such indemnified and indemnifying parties may exist
with respect to such claim, permit such indemnifying party to assume the defense
of such claim with counsel reasonably  satisfactory to the indemnified party and
such  indemnifying  parties shall promptly and vigorously assume such defense at
its cost and expense.  If such defense is assumed,  the indemnifying  party will
not be subject to any liability for any settlement made by the indemnified party
without its consent  (but such consent will not be  unreasonably  withheld).  An
indemnifying  party who is not entitled to, or elects not to, assume the defense
of a claim shall promptly pay all costs and expenses of the indemnified  party's
defense, but will not be obligated to pay the fees and expenses of more than one
counsel for each party  indemnified by such  indemnifying  party with respect to
such claim.

                                     Page 4


         Section 2.5  Conversion  of USI Options.  At the  Effective  time,  all
outstanding  options and  warrants to  purchase  USI Shares,  a list of which is
attached  hereto  as  Schedule  2.5,  ("USI  Options")  shall  automatically  be
converted  into  options and  warrants  (the  "Converted  Options")  to purchase
Pre-Cell  Shares on the basis of 8.8 Pre-Cell Shares for each USI Share entitled
to be  purchased  under the USI  Options,  at the  per-share  price equal to the
quotient of (i) the price  contained  in the USI  Options,  divided by (ii) 8.8.
Additionally,  the vesting of the Converted  Options shall be  accelerated  such
that  all  of the  Converted  Options  shall  be  immediately  vested  upon  the
consummation  of the Merger.  Other than the  foregoing  changes,  each holder's
Converted Options shall have the same exercise terms as his USI Options.

                                   ARTICLE III
                                     Closing

         Section  3.1 Time and Place of the  Closing.  Subject  to the terms and
conditions of this Agreement, the consummation of the transactions  contemplated
by this Agreement  pursuant hereto shall take place at a closing (the "Closing")
to be held concurrently with the execution of this Agreement,  at the offices of
Tobin & Reyes, P.A., 7251 West Palmetto Park Road, Boca Raton, Florida 33433, on
a date and at a time mutually agreeable to the parties (the "Closing Date").

         Section 3.2 Procedure at the Closing. At the Closing, the parties agree
to take the following steps in the order listed below (provided,  however,  that
upon  their  completion  all of these  steps  shall be deemed  to have  occurred
simultaneously):

         (a) Pre-Cell  shall  deliver the  certificates  representing  the Stock
Consideration to the Stockholders in accordance with Exhibit A;

         (b)  The   Stockholders   shall   deliver  to   Pre-Cell   certificates
representing  their  respective  shares of USI common  stock,  duly  endorsed or
accompanied  by duly executed  stock powers and with all requisite  transfer tax
stamps;

         (c) Merger  Subsidiary  and USI shall duly execute the  Certificate  of
Merger and file the Certificate of Merger with the State of Georgia Secretary of
State.

         (d) Pre-Cell and the USI  employees  listed on Exhibit D shall  execute
and deliver to each other an  employment  agreement  as  mutually  agreed by the
employees and Pre-Cell (the "Employment Agreements");

         (e) USI shall deliver to Pre-Cell  certified  copies of  resolutions of
the  Stockholders and directors of USI authorizing the execution and delivery of
this Agreement by USI and the performance of USI's obligations hereunder and its
consummation of the transaction contemplated hereby;

                                     Page 5


         (f)  Merger  Subsidiary  shall  deliver to the  Stockholders  certified
copies of  resolutions  of the directors of Merger  Subsidiary  authorizing  the
execution  and  delivery  of  this  Agreement  by  Merger   Subsidiary  and  the
performance of Merger Subsidiary's obligations hereunder and its consummation of
the transaction contemplated hereby;

         (g) Pre-Cell  shall  deliver to the  Stockholders  certified  copies of
resolutions of the directors of Pre-Cell  authorizing the execution and delivery
of this  Agreement by Pre-Cell and the  performance  of  Pre-Cell's  obligations
hereunder and its consummation of the transaction contemplated hereby;

         (h) USI shall deliver the corporate  books and records,  correspondence
and employment records to Merger Subsidiary;

         (i) The  Pre-Cell  Major  Stockholders  and the USI Major  Stockholders
shall execute the Voting Agreement.

                                   ARTICLE IV
                      REPRESENTATIONS AND WARRANTIES OF USI

         In order to induce  Pre-Cell and Merger  Subsidiary  to enter into this
Agreement and to consummate the transactions  contemplated under this Agreement,
USI hereby makes the following  representations  and warranties each of which is
relied upon by Pre-Cell and Merger  Subsidiary  regardless  of any other action,
omission to act,  investigation  made or  information  obtained by Pre-Cell  and
Merger Subsidiary.

         Section  4.1  Organization,  Power  and  Authority  of  USI.  USI  is a
corporation duly organized, validly existing and in good standing under the laws
of the State of Georgia and USI has the requisite  corporate power and authority
to own or lease its  properties  and to carry on its business as it is now being
conducted.  USI is  duly  qualified  as a  foreign  corporation  and is in  good
standing under the laws of each other  jurisdiction  in which the conduct of its
business or the  ownership of its assets  requires  such  qualification,  except
where the failure to qualify  would not result in a material  adverse  effect on
USI or its business. USI has no subsidiaries.

         Section  4.2  Due  Authorization;   Binding  Obligation.  USI  has  the
requisite  corporate  power and  authority to enter into this  Agreement  and to
consummate the transactions  contemplated by this Agreement.  This Agreement has
been duly and validly executed and delivered by USI and is the legal,  valid and
binding obligation of USI,  enforceable in accordance with its terms,  except as
the   enforceability   thereof  may  be  limited  by   bankruptcy,   insolvency,
reorganization,  fraudulent  conveyance,  preferential  transfer,  moratorium or
similar laws relating to enforcement of creditors'  rights generally and general
principles of equity.  Except for any corporate action required by USI, no other
action on the part of any  individual  or other person or entity is necessary to

                                     Page 6


authorize  this  Agreement  or  for  the   consummation   of  the   transactions
contemplated  by this  Agreement.  USI has  duly  executed  this  Agreement  and
authorized  the  execution  of  this  Agreement  and  the  consummation  of  the
transactions  contemplated by this Agreement as required under the Georgia GBCC.
Neither the execution and delivery of this Agreement nor the consummation of the
transactions  contemplated  by this Agreement will: (i) conflict with or violate
any  provision  of USI's  Articles  of  Incorporation  or  by-laws,  or any law,
ordinance or regulation or any decree or order of any court or administrative or
other  governmental  body  which  is  either  applicable  to,  binding  upon  or
enforceable  against USI; (ii) result in any material breach of or default under
any material  mortgage,  other contract,  agreement,  indenture,  will, trust or
other instrument which is either binding upon or enforceable  against USI or any
of USI'  Assets;  (iii) result in any breach of or default  under any  contract;
(iv) violate any legally  protected right of any individual or entity or give to
any  individual  or entity a right or claim  against  USI or  Pre-Cell;  or, (v)
impair  or in any way limit  any  material  governmental  or  official  license,
approval,  permit or authorization  of USI to conduct its business.  Attached to
this Agreement and marked as Exhibit G are true,  correct and complete copies of
the Articles of Incorporation, as amended, and Bylaws, as amended, of USI.

         Section 4.3 Financial Statements. Attached to this Agreement as Exhibit
H are true, correct and complete copies of the unaudited financial statements of
USI as of December 31, 1999 and the related  statements  of earnings and changes
in financial  position for the period then ended  (collectively,  the "Financial
Statements"). The Financial Statements (i) have been prepared in accordance with
USI's accounting policies  consistently applied, on a basis consistent with past
practices;  (ii) are true,  complete  and  correct;  (iii)  fairly  present  the
financial  condition  of USI as of their  respective  dates and  results  of its
operations for the periods  ending on their  respective  dates;  and (iv) do not
include or omit to state any fact which renders those statements misleading.

         Section  4.4 No  Undisclosed  Liabilities.  USI has no  liabilities  or
obligations (whether secured, unsecured, absolute, accrued, asserted, contingent
or otherwise) of any nature, whether as principal, agent, partner,  co-venturer,
guarantor or in any other capacity  except:  (i) the liabilities and obligations
of USI that are  reflected in the  Financial  Statements  and only to the extent
reflected;  (ii)  liabilities  incurred  or  accrued in the  ordinary  course of
business since  December 31, 1999 which do not,  either  individually  or in the
aggregate,  have a material adverse effect on the financial condition of USI; or
(iii) liabilities otherwise disclosed in Schedule 4.4.

         Section 4.5 Licenses;  Compliance. USI possesses all licenses and other
required   governmental   or   official   approvals,   permits,   consents   and
authorizations  necessary for the  operation of the  Business,  all of which are
listed on Schedule 4.5 (collectively the  "Authorizations").  USI is in material
compliance with: (i) the terms of all Authorizations; (ii) all laws, ordinances,
statutes  and  regulations  where  noncompliance  would have a material  adverse
effect on USI and its  business or assets;  and,  (iii) all  judgments,  orders,
rulings or other decisions of any  governmental or other  regulatory  authority,
court or  arbitrator  having  jurisdiction  over  USI.  Neither  the  execution,
delivery  or  performance   of  this  Agreement  nor  the   performance  of  the

                                     Page 7


transactions  contemplated  by this  Agreement  will affect the  validity of any
Authorizations  and the same  shall  remain in full  force and  effect  upon the
consummation of the  transactions  contemplated  by this  Agreement,  except for
Authorizations which by their terms are not transferable.

         Section  4.6  Consents   and   Approvals.   No  approval,   consent  or
authorization must be obtained by USI for the execution, delivery or performance
of this Agreement or for the  consummation of the  transactions  contemplated by
this Agreement,  including,  without limitation, the filing or registration with
any governmental or other regulatory authority.

         Section  4.7 No  Stockholder  or  Affiliate  Relationships  with  USI's
Customers;  USI's  Interest  in  Other  Businesses.  Neither  USI nor any of the
Stockholders or their respective affiliates (as such term is defined in Rule 405
promulgated by the SEC under the Securities  Act)  ("Affiliate")  has, or during
the past 5 years had, any direct or indirect  material  interest in any of USI's
customers.  USI does not have any  financial  interest  in any  person,  firm or
corporation  which is, or during the past 5 years was,  directly or  indirectly,
(a) engaged in the  business  engaged in by USI or (b) a customer or supplier of
USI,  other than  ownership  of not more than 1% of the equity  securities  of a
company whose common stock is publicly traded.

         Section  4.8  Litigation,  Orders  and  Decrees.  Except  as  listed on
Schedule 4.8, there are no actions, suits, claims,  governmental  investigations
or arbitration proceedings pending or to the best of USI's knowledge, threatened
against or affecting USI or the Business,  assets, or financial condition of USI
and there are no facts or circumstances  which are reasonably likely to create a
basis for any of the foregoing,  which, either individually or in the aggregate,
would  have a  material  adverse  affect  on  USI,  its  business  or  financial
condition.  There are no outstanding  orders,  decrees or stipulations issued by
any local, state or federal judicial authority in any proceeding to which USI is
or was a party which may have a material adverse effect on USI.

         Section 4.9 Real  Property  Owned or Leased.  USI does not own any real
property. Attached to this Agreement as Schedule 4.9 is a true and complete list
of all leases of real  property  (the "Leased Real  Property") to which USI is a
party,  including all amendments and  modifications  thereto (the "Real Property
Leases").  USI enjoys  peaceful and  undisturbed  possession  of the Leased Real
Property,  and the Real  Property  Leases  are the  valid  and  legally  binding
obligations of USI and the respective  lessors,  enforceable against USI and the
respective  lessors in accordance with their  respective  terms, and are in full
force and effect.  USI (i) has not received  written notice of default under any
of the  Real  Property  Leases,  (ii) is not in  material  default  of any  Real
Property Leases and (iii) no event has occurred which,  with the passage of time
or the giving of notice or both,  would  constitute a material default under any
of the Real Property Leases.

         Section 4.10 Personal Property Leased and Purchase Options. Attached as
Schedule  4.10 is a list of all  leases  of  personal  property  (the  "Personal
Property Leases") to which USI is a party. USI has provided to Pre-Cell true and
complete copies of the Personal  Property  Leases,  including all amendments and

                                     Page 8


modifications  thereto and true and complete copies of all agreements  regarding
USI's rights to purchase the leased  personal  property  which is the subject of
the Personal  Property Leases ("the Leased Personal  Property") on or before the
expiration  of the  Personal  Property  Leases,  including  all  amendments  and
modifications  thereto  (the  "Purchase  Options").   USI  enjoys  peaceful  and
undisturbed  possession  of the  Leased  Personal  Property,  and  the  Personal
Property  Leases  and  Purchase  Options  are  the  valid  and  legally  binding
obligations of USI and the respective  lessors and option grantors,  enforceable
against USI and the respective  lessors and option  grantors in accordance  with
their respective terms, subject to the effect of any bankruptcy or other similar
law affecting creditors' rights generally, and are in full force and effect. USI
(i) has not  received  written  notice  of  default  under  any of the  Personal
Property Leases,  (ii) is not in default of any Personal  Property  Leases,  and
(iii) no event has  occurred  which,  with the  passage of time or the giving of
notice or both,  would  constitute a material  default under any of the Personal
Property Leases. None of the Purchase Options, if any, have expired.

         Section 4.11 Title to  Purchased  Assets.  USI has good and  marketable
title to all of its  property,  tangible  or  intangible,  subject  to liens for
current taxes and assessments not yet due and payable.  All of USI's property is
free and clear of restrictions  on or conditions to transfer or assignment,  and
free and clear of any mortgage, lien, charge, encumbrance,  security interest or
other restrictions.

         Section 4.12 Condition of Purchased Assets.  All of the tangible assets
of USI and the Leased Personal Property are in good condition, in good operating
order and are fit for the  purposes  for which those assets are used or intended
to be used, subject to normal wear and tear.

         Section  4.13  Material  Contracts.  Attached  as  Schedule  4.13  is a
complete  and  correct  list of each of the  following  types  of  contracts  or
commitments  (whether oral or written) to which USI is a party (collectively the
"Contracts"):  (i) Contracts  for the  employment of any officer or employee and
all bonus, incentive compensation,  profit-sharing,  retirement,  pension, group
insurance, death benefit or other fringe benefit plans, deferred compensation or
post-termination   obligations;  (ii)  Contracts  for  the  future  purchase  of
materials,   inventory,  supplies,  services  or  equipment;  (iii)  distributor
agreements and contracts for the purchase or sale of inventory or supplies; (iv)
agreements or arrangements for the purchase,  sale or lease of any other assets;
(v) pledges,  sales  contracts,  leases,  security  agreements  or other similar
agreements  with  respect  to USI's  properties;  (vi)  leases of  machinery  or
equipment; (vii) loan agreements, promissory notes, guarantees, subordination or
similar type agreements;  (viii) consulting  agreements;  and, (ix) any contract
not otherwise  covered by clauses (i) through (viii) above which involves annual
or aggregate  payments in excess of $1,000.  USI has furnished to Pre-Cell true,
complete  and  accurate  copies of all  Contracts  that are in  writing  and has
provided,  in the case of oral contracts,  complete and accurate descriptions of
all Contracts that are not in writing. Except as set forth in Schedule 4.13, USI
has  performed  all of the  obligations  required to be  performed by it to date
under the  Contracts,  and is not in  default  (with  notice or lapse of time or
both) under any of  Contracts.  USI has obtained  all  necessary  consents  with
respect to any USI  Contract  requiring  consent on or prior to the date hereof.

                                     Page 9


Except as set forth on  Schedule  4.13,  the  consummation  of the  transactions
contemplated  by this  Agreement will not  materially  affect the  continuation,
validity or effectiveness of any of Contracts.

         Section 4.14 Contracts with Customers.  Schedule 4.14 sets forth a list
of (a) all Contracts or other  understandings  or arrangements to which USI is a
party  relating to the sale or furnishing  by it of goods or services  where the
consideration  for such sale is  $1,000 or more,  in any  single  case,  (b) any
claims by parties other than USI with respect thereto, (c) product guarantees or
warranties  made by USI relating to its goods or  services,  and (d) any pending
claims by USI with respect  thereto.  None of the customers,  suppliers or other
persons  which is a party to any of the  Contracts  listed in Schedule  4.14 has
notified  USI of any  intention to terminate  its  contract or  arrangement  for
service.

         Section 4.15 Contracts Valid; No Default.  All Contracts required to be
listed  in any of the  Schedules  referred  to in this  Agreement  are valid and
binding,  enforceable in accordance with their respective terms,  subject to the
effect of any  bankruptcy  or other  similar  law  affecting  creditors'  rights
generally,  and are in full  force  and  effect.  Except  as set  forth  in such
Schedules,  there is not under any such  Contract,  (a) any existing  default by
USI,  or any  event  which,  after  notice  or  lapse of  time,  or both,  would
constitute  a default  by USI or result  in a right to  accelerate  by any other
person or a loss of any  rights  of USI and (b) to the best of USI's  knowledge,
any default by any other  person,  or any event which,  after notice or lapse of
time,  or both,  would  constitute  a default by any such  person or result in a
right  to  accelerate  by USI or a loss of any  rights  of any such  person.  No
existing  Contract  relating to the business of USI is  cancelable  by any other
party  thereto  or is  likely  to be  canceled.  Except  as  disclosed  in  such
Schedules,  USI  is  not a  party  to or  bound  by  any  Contract  which,  upon
performance,  is reasonably  expected to result in any loss or liability to USI.
True and complete  copies of all  Contracts and other  documents  listed on such
Schedules  (together with any and all amendments thereto) have been delivered to
Pre-Cell.

         Section  4.16  Labor  Matters.  USI is not a  party  to any  collective
bargaining agreements with its employees. USI is in compliance with all federal,
state and local laws regarding employment and employment  practices,  conditions
of  employment,  wages and hours and  occupational  laws, the violation of which
would have a material  adverse effect on USI. USI is not engaged in unfair labor
practices,  and there are no unfair labor practice complaints pending or, to the
best of USI's  knowledge,  threatened  against  USI  before the  National  Labor
Relations  Board  or any  other  governmental  or  regulatory  board  or  agency
performing similar functions.  There is no labor strike, slowdown, work stoppage
or dispute pending or threatened  against or involving USI. To the best of USI's
knowledge,  none of USI's  employees are engaged in organizing or are members of
any union or other  employee  group that is seeking  recognition as a bargaining
unit.

         Section 4.17 Absence of Changes.  Except as set forth in Schedule 4.17,
since December 31, 1999,  there has not been: (i) any material adverse change in
the financial  condition,  assets,  liabilities,  Business or operations of USI;
(ii) any  damage,  destruction  or loss,  whether or not  covered by  insurance,
materially  and  adversely  affecting  the  properties,  financial  condition or
business of USI; (iii) any change in the outstanding  capital stock of USI; (iv)

                                    Page 10


declared,  paid or set aside for  payment  any  dividend  or other  distribution
(whether  in cash,  stock,  property or any  combination  thereof) in respect of
USI's  common  stock  or any  cancellation,  exercise  or  redemption  or  other
acquisition by USI of any shares of USI's common stock;  (v) any increase in the
rate or terms of compensation  payable or to become payable by USI to any of its
officers,  directors  or key  employees  or any increase in the rate or terms of
contribution to any employee benefit plans,  except as required by law; (vi) any
liabilities or obligations  incurred or agreed to be incurred (whether absolute,
accrued, contingent or otherwise),  except as incurred in the ordinary course of
business consistent with past practices;  (vii) any material capital expenditure
or commitment for replacements or additions or  improvements;  (viii) any change
by USI in  accounting  methods,  principles  or  practices;  (ix) any  disposal,
mortgage,  pledge or other  disposition  of any of its assets  other than in the
ordinary course of business;  or (x) receipt by USI of any notice of termination
of any contract, lease or other agreement.

         Section  4.18  Accuracy  of  Documents,  Exhibits  and  Schedules.  All
contracts,  instruments,  agreements  and other  documents  delivered  by USI to
Pre-Cell  for  Pre-Cell's  review  in  connection  with this  Agreement  and the
transactions  contemplated  hereby,  including  all  articles of  incorporation,
by-laws,  corporate minutes,  stock record books,  financial  statements and tax
returns  are  true,   correct  and  complete  copies  of  all  those  contracts,
instruments,  agreements and other documents. All Exhibits and Schedules to this
Agreement  are true  correct and  complete as of the date  hereof.  No statement
contained  in  this  Agreement  or in  any  certificate,  Exhibit,  Schedule  or
instrument furnished to Pre-Cell pursuant to the provisions of this Agreement or
in connection with the consummation of the contemplated transactions contains or
will  contain any  materially  untrue  statement  or does not include or omit to
state any fact which renders those statements misleading.

         Section 4.19 Investment  Representations.  All shares of Pre-Cell Stock
to be acquired by the  Stockholders  pursuant to this Agreement will be acquired
for his/her own account and not with a view towards  distribution  thereof.  USI
and the  Stockholders  understand  that they must bear the economic  risk of the
investment in the Pre-Cell  Stock,  which cannot be sold by them unless they are
registered under the Securities Act, or an exemption therefrom is available, and
such  sale  is  permitted  under  the  terms  of  the  Lock-Up  Agreement.   The
Stockholders,   acting  through  their   representatives,   have  had  both  the
opportunity to ask questions and receive answers from the officers and directors
of Pre-Cell  and all persons  acting on its behalf  concerning  the business and
operations of Pre-Cell and to obtain any  additional  information  to the extent
Pre-Cell  possesses  or may possess such  information  or can acquire it without
unreasonable  effort  or  expense  necessary  to  verify  the  accuracy  of such
information.  The Stockholders  acknowledge  receiving copies of the SEC Filings
referred to in Section 5.5. The  certificates  representing the shares of Common
Stock shall bear the legends set forth in Exhibit I.

         Section 4.20      Proprietary Rights.

         (a)  Except as listed on  Schedule  4.20(a),  there are no  trademarks,
trademark  applications,  trade names,  assumed  names,  service  marks,  logos,

                                    Page 11


patents, patent applications,  copyrights and copyright registrations,  owned or
licensed by USI and used in or  necessary  for the conduct of the  business  and
operation of USI (the  foregoing  together with all  inventions,  trade secrets,
customer  lists  and  confidential  processes,  and  all  other  similar  rights
presently owned or licensed by USI are the  "Proprietary  Rights").  USI owns or
possesses the royalty-free  license or other right to use all of the Proprietary
Rights  which  are  required  to be  listed  on  Schedule  4.20(a)  or which are
necessary  to conduct its  business as presently  operated,  and,  except as set
forth on Schedule  4.20(a),  no person,  firm,  corporation  or other  entity is
entitled  to  restrain  USI from  using any such  Proprietary  Rights.  No other
Proprietary  Rights are used in or are necessary for the conduct of the business
and operation of USI as presently conducted.

         (b) To the best of USI's  knowledge,  except as  disclosed  in Schedule
4.20 (b), no Proprietary Rights or know-how used in or necessary for the conduct
of the business and  operation of USI conflict with or infringe upon any similar
rights or services of any other  person.  Except as disclosed  in Schedule  4.20
(b), no claims have been  asserted by any person with respect to the  ownership,
validity,  license  or use of the  Proprietary  Rights or the  provision  of any
services by USI and there is no basis for any such claim.

         (c) Schedule 4.20(c)  accurately  identifies all material databases and
computer  software  owned,  licensed or otherwise used in connection  with USI's
business. Except as set forth on Schedule 4.20(c), USI has all the databases and
computer software used or necessary to conduct USI' business.

         Section 4.21 Records. The books and records, correspondence, employment
records and files of or relating to the Business USI are complete and correct in
all  material  respects,   and  there  have  been,  and  will  be,  no  material
transactions  which are required to be set forth  therein which have not been so
set forth.

         Section 4.22 Taxes, Tax Returns. All federal,  state, local and foreign
income,  property,  sales, and other taxes,  assessments,  governmental charges,
penalties,  interest  and fines due and payable by USI and by any other  person,
firm or corporation  which will or may be liabilities of USI ("Taxes"),  for all
periods  ending on or before the Balance  Sheet Date,  have been paid in full or
have  been  fully  reserved  against  on the  Balance  Sheet.  USI has filed all
federal, state, local and foreign income, excise, property,  sales, withholding,
social security, information returns, and other tax returns, reports and related
information  ("Returns")  required to have been filed by it to the date  hereof,
and no extension  of the time for filing a Return is  presently  in effect.  The
Returns  that have been filed have been  accurately  prepared and have been duly
and timely filed.  USI's federal income tax returns have not been audited by the
Internal  Revenue  Service for all fiscal years through the year ended  December
31, 1998. There are no agreements,  waivers or other arrangements  providing for
an extension of time with respect to the filing of any Return, or payment of any
tax,  governmental charge or assessment or deficiency,  by USI; and there are no
actions, suits, proceedings,  investigations or claims now threatened or pending
against USI in respect of taxes,  governmental  charges or  assessments,  or any
matter  under  discussion  with any  governmental  authority  relating to taxes,
governmental charges or assessments asserted by any such authority.

                                    Page 12



         Section 4.23 Environmental  Matters;  Health and Safety Laws. USI is in
material  compliance  with all  federal,  state  and  local  laws,  regulations,
permits,  orders and  decrees  relating to  protection  of the  environment  and
employee health and safety ("Applicable Requirements"). USI has not received any
notice to the effect that its operations  are not in compliance  with any of the
Applicable  Requirements  or  the  subject  of  any  governmental  investigation
evaluating  whether any remedial action is needed to respond to a release of any
toxic or hazardous waste or other substance  (including petroleum products) into
the environment  and USI knows of no facts which could  constitute the basis for
any thereof.

         Section  4.24  Brokers.  No  broker,  finder  or  investment  banker is
entitled to any  brokerage,  finder's or other fee or  commission  in connection
with the  transactions  contemplated by this Agreement  based upon  arrangements
made by or on behalf of USI,  provided,  however,  USI entered into an agreement
with  RiverHawk  Capital  Resources,  a division  of  RiverHawk  Holdings,  Inc.
("RiverHawk"),  which USI terminated.  RiverHawk is claiming  remuneration under
the agreement arising out of the Merger which USI denies.  The matter is subject
to binding arbitration.

         Section 4.25 Nature and Survival of  Representations  and Warranties of
USI. All statements  contained in any Schedule,  document,  certificate or other
instrument  delivered  by or on behalf of USI pursuant  hereto or in  connection
with the  transactions  contemplated  hereby  shall be  deemed  representations,
warranties, covenants and agreements made by USI. Each representation, warranty,
covenant and agreement made or deemed made by USI shall survive the Closing. The
representations, warranties, covenants and agreements made or deemed made by USI
in this  Agreement  shall not be affected or deemed waived by reason of the fact
that  Pre-Cell  or its  representative  knew or should  have known that any such
representations, warranties, covenants or agreement is or might be inaccurate in
any respect.  Any  furnishing of  information to Pre-Cell by USI pursuant to, or
otherwise in connection with, this Agreement, including, without limitation, any
information contained in any document,  contract, book or record of USI to which
Pre-Cell shall have access or any information obtained by, or made available to,
Pre-Cell as a result of any investigation made by or on behalf of Pre-Cell prior
to or after the date of this  Agreement,  shall not affect  Pre-Cell's  right to
rely on any representation,  warranty, covenant or agreement made or deemed made
by USI in this Agreement and shall not be deemed a waiver thereof.

         Section  4.26  Capitalization.  The  number of  authorized,  issued and
outstanding  shares of capital stock of USI is set forth in Schedule  4.26.  The
Stockholders  (and  their  respective  residential  addresses)  as set  forth on
Exhibit A, and are the record and  beneficial  owners of all of the  outstanding
capital stock of USI, free and clear of all liens,  encumbrances or restrictions
to  transfer.  Except  as set forth on  Schedule  4.26,  there  are no  options,
warrants or other  contractual  rights  outstanding  which require,  or give any
person the right to require,  the issuance of any capital stock of USI,  whether
or not such rights are presently exercisable.

                                    Page 13


         Section 4.27 Employee Benefit Plans. Schedule 4.27 sets forth a list of
all the  employee  benefit  plans (as  defined in Section  3(3) of the  Employee
Retirement  Income  Security Act of 1974,  as amended  ("ERISA")),  programs and
arrangements  maintained  for the  benefit of any  current  or former  employee,
officer or director of USI  (collectively,  the "USI Benefit  Plans").  Each USI
Benefit  Plan and any related  trust  intended to be  qualified  under  Sections
401(a) and 501(a) of the Code has received a favorable determination letter from
the Internal  Revenue  Service that it is so qualified  and nothing has occurred
since the date of such letter that could  reasonably  be expected to  materially
adversely affect the qualified status of such USI Benefit Plan or related trust.
Each USI Benefit Plan has been  operated in all material  respects in accordance
with the terms and  requirements of applicable law and all required  returns and
filings for each USI Benefit  Plan have been  timely  made.  Neither USI nor any
entity  under  common  control  with USI has  incurred  any  direct or  indirect
liability under,  arising out of or by operation of Title I or Title IV of ERISA
in  connection  with any USI Benefit Plan and no fact or event exists that could
reasonably be expected to give rise to any such liability. All contributions due
and  payable on or before the date  hereof in respect of each USI  Benefit  Plan
have been made in full and in proper form.

         Section 4.28 Insurance Policies;  Claims.  Schedule 4.28 sets forth all
insurance  policies  and bonds  maintained  by or on  behalf  of USI.  Except as
disclosed  in  Schedule  4.28,  the  insurance  policies  and bonds set forth in
Schedule  4.28,  are  provided by  reputable  insurers  or issuers,  and provide
adequate coverage for all normal risks incident to the businesses of USI and its
assets. No claims have been made against USI as a result of allegedly  defective
products  and USI  knows of no basis for the  assertion  of any such  claim.  No
insurance  policy  issued to or on behalf of USI has ever been  canceled  by the
policy issuer.

         Section 4.29 Bank  Accounts.  Schedule 4.29 sets forth the name of each
bank in which USI has an account or safe deposit box,  vault,  lock-box or other
arrangement, the account number and description of each account at each bank and
the names of all persons  authorized to draw thereon or to have access  thereto;
and the names of all  persons,  if any,  holding tax or other powers of attorney
from USI.

         Section  4.30  Records.  The  books of  account,  minute  books,  stock
certificate  books and stock transfer ledgers of USI are complete and correct in
all material respects,  and there have been no material  transactions  involving
USI of the type typically recorded in such records that have not been recorded.

         Section 4.31 No Illegal or Improper  Transactions.  Neither USI nor any
officer,  director,  employee,  agent or affiliate  of USI has offered,  paid or
agreed to pay to any person or entity  (including any governmental  official) or
solicited,  received  or  agreed to  receive  from any such  person  or  entity,
directly or  indirectly,  any money or anything of value for the purpose or with
the intent of (i) obtaining or maintaining business for the benefit of USI, (ii)
illegally  or  improperly  facilitating  the  purchase or sale of any product or
service,  or (iii) avoiding the imposition of any fine or penalty, in any manner
which is in violation of any applicable ordinance, regulation or law.

                                    Page 14


         Section  4.32  Related  Transactions.  Except as  disclosed in Schedule
4.32, and for compensation and related  arrangements with employees for services
rendered consistent with past practices, no current or former director, officer,
employee or stockholder of USI has been, (a) a party to any transaction with USI
(including,  but not limited to, any contract,  agreement or other  arrangements
providing  for the  furnishing  of  services  by, or rental of real or  personal
property from, or otherwise  requiring payments to, any such director,  officer,
employee or shareholder),  or (b) the direct or indirect owner of an interest in
any corporation,  firm,  association or business organization which is a present
competitor, supplier or customer of USI, nor does any such person receive income
from any source  other  than USI which  relates  to the  business  of, or should
properly accrue to, USI.

         Section 4.33 Software. USI owns all right, title and interest in and to
the  software  which  is  described  in  Schedule  4.33  (the  "Software").  The
marketing,  reproduction  or use of the  Software,  does not  infringe  upon any
patent,  copyright,  trademark,  trade secret or other  proprietary right of any
third party. No proceedings have been instituted,  are pending or are threatened
which challenge the rights of USI under or the validity of the Software, none of
the  intellectual  property  rights  relating to the Software is being infringed
upon by others and none of the  intellectual  property  rights  relating  to the
Software  is subject to any  outstanding  order or  judgment.  USI has taken all
steps reasonably  necessary to protect the  intellectual  property rights in the
Software,  including,  but not limited to,  utilization of the proper  statutory
form of copyright  notice on all copies of the  Software  and any  documentation
relating of the Software  that has been  commercially  distributed  prior to the
Closing Date.

         Section  4.34  Incorporation  of  Schedules  by  Reference.  All of the
disclosures, lists, descriptions and otherwise set forth in any Schedule to this
Agreement shall be conclusively  deemed to have been made under and with respect
to  each  and  every  other  Section  and  Schedule  to  this  Agreement,  where
applicable.  It is the intent of this provision that the disclosure by USI under
any one  Schedule,  shall be  notice  and  disclosure  to  Pre-Cell  and  Merger
Subsidiary, respectively, under this Agreement.

                                    ARTICLE V
                   Representations and Warranties of Pre-Cell

         In  order  to  induce  USI and the  Stockholders  to  enter  into  this
Agreement and to consummate the transactions  contemplated under this Agreement,
Pre-Cell and Merger  Subsidiary  hereby make the following  representations  and
warranties each of which is relied upon by USI and the  Stockholders  regardless
of any other action, omission to act, investigation made or information obtained
by USI or the Stockholders:

         Section 5.1  Organization,  Power and  Authority.  Pre-Cell  and Merger
Subsidiary are  corporations  duly organized and validly existing under the laws
of the States of Colorado and Georgia,  respectively,  with full corporate power
and authority to enter into this Agreement and perform their  obligations  under
this Agreement.

                                    Page 15


         Section  5.2 Due  Authorization;  Binding  Obligation.  The  execution,
delivery and performance of this Agreement, the consummation of the transactions
contemplated by this Agreement and the issuance of the Stock  Consideration have
been duly  authorized by all necessary  corporate  action of Pre-Cell and Merger
Subsidiary.  This Agreement has been duly executed and delivered by Pre-Cell and
Merger Subsidiary and is the valid and binding obligation of Pre-Cell and Merger
Subsidiary,  enforceable in accordance with its terms. Neither the execution and
delivery of this Agreement nor the consummation of the transactions contemplated
by this  Agreement  will:  (i)  conflict  with or violate any  provision  of the
articles of incorporation or by-laws of Pre-Cell or Merger Subsidiary, or of any
law,   ordinance  or  regulation  or  any  decree  or  order  of  any  court  or
administrative or other governmental body which is either applicable to, binding
upon or enforceable  against Pre-Cell or Merger  Subsidiary;  (ii) result in any
material breach of or default under any material mortgage, contract,  agreement,
indenture,  will,  trust or other  instrument  which is either  binding  upon or
enforceable against Pre-Cell or Merger Subsidiary or their respective assets.

         Section 5.3 Shares.  When issued in  accordance  with the terms of this
Agreement,  the Pre-Cell Stock to be issued to the Stockholders shall be validly
issued, fully paid and non-assessable.

         Section 5.4 Consents and Approvals.  The execution and delivery of this
Agreement by Pre-Cell do not, and the  performance of this Agreement by Pre-Cell
will not,  require  Pre-Cell to obtain any consent,  approval,  authorization or
other action by, or to make any filing with or notification to, any governmental
or regulatory authority.

         Section 5.5 SEC Reports.  Pre-Cell has delivered to the Stockholder its
reports (the "SEC Filings") filed pursuant to the Securities And Exchange Act of
1934, as amended (the  "Securities And Exchange Act").  Each of the SEC Filings,
including the financial  statements contained therein, as of their filing dates,
complied  in all  material  respects  with the  requirements  of the  rules  and
regulations   promulgated  by  the  Securities  and  Exchange   Commission  (the
"Commission") with respect thereto and did not 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.

         Section 5.6 Brokers. No broker, finder or investment banker is entitled
to any  brokerage,  finder's or other fee or commission  in connection  with the
transactions  contemplated by this Agreement based upon  arrangements made by or
on behalf of Pre-Cell.

         Section 5.7 Absence of  Changes.  Except as set forth in Schedule  5.7,
since December 31, 1999,  there has not been: (i) any material adverse change in
the  financial  condition,  assets,  liabilities,   Business  or  operations  of
Pre-Cell;  (ii) any  damage,  destruction  or loss,  whether  or not  covered by
insurance,   materially  and  adversely  affecting  the  properties,   financial
condition or business of Pre-Cell;  (iii) any change in the outstanding  capital

                                    Page 16


stock of Pre-Cell;  (iv) declared, paid or set aside for payment any dividend or
other distribution (whether in cash, stock, property or any combination thereof)
in  respect  of  Pre-Cell's  common  stock  or  any  cancellation,  exercise  or
redemption or other acquisition by USI of any shares of Pre-Cell's common stock;
(v) any  increase  in the rate or terms of  compensation  payable  or to  become
payable by Pre-Cell to any of its  officers,  directors or key  employees or any
increase in the rate or terms of  contribution  to any employee  benefit  plans,
except as required  by law;  (vi) any  liabilities  or  obligations  incurred or
agreed to be incurred  (whether  absolute,  accrued,  contingent or  otherwise),
except as  incurred in the  ordinary  course of  business  consistent  with past
practices; (vii) any material capital expenditure or commitment for replacements
or  additions  or  improvements;  (viii) any change by  Pre-Cell  in  accounting
methods,  principles or practices; (ix) any disposal,  mortgage, pledge or other
disposition of any of its assets other than in the ordinary  course of business;
or (x) receipt by Pre-Cell of any notice of termination  of any contract,  lease
or other agreement.

         Section  5.8  Accuracy  of  Documents,   Exhibits  and  Schedules.  All
contracts, instruments,  agreements and other documents delivered by Pre-Cell to
USI for USI's review in  connection  with this  Agreement  and the  transactions
contemplated hereby, including all articles of incorporation, by-laws, corporate
minutes,  stock record  books,  financial  statements  and tax returns are true,
correct and complete copies of all those contracts, instruments,  agreements and
other  documents.  All Exhibits and Schedules to this Agreement are true correct
and complete as of the date hereof. No statement  contained in this Agreement or
in any  certificate,  Exhibit,  Schedule  or  instrument  furnished  to Pre-Cell
pursuant  to  the  provisions  of  this  Agreement  or in  connection  with  the
consummation  of the  contemplated  transactions  contains  or will  contain any
materially  untrue statement or does not include or omit to state any fact which
renders those statements misleading.

         Section  5.9  Limitation  of  Liabilities.   Notwithstanding   anything
contained  herein to the  contrary,  Pre-Cell  shall  have no  liability  to the
Shareholders  if any of the  representations  and  warranties  contained in this
Article V are  inaccurate  or for a breach  of any  representation  or  warranty
contained herein.

         Section  5.10  Incorporation  of  Schedules  by  Reference.  All of the
disclosures, lists, descriptions and otherwise set forth in any Schedule to this
Agreement or in any of the SEC Filings shall be conclusively deemed to have been
made under and with respect to each and every other Section and Schedule to this
Agreement,  where  applicable.  It is the  intent  of this  provision  that  the
disclosure by Pre-Cell  under any one Schedule or in any one of the SEC Filings,
shall be notice and disclosure to USI and the Stockholders,  respectively, under
this Agreement.

                                   ARTICLE VI
                                Covenants of USI

         Section  6.1  Further  Assurances.  From time to time after the date of
this  Agreement,   the  Stockholders   shall  execute  and  deliver  such  other
instruments and shall take such other actions as Pre-Cell may reasonably request
to effectuate the transactions contemplated by this Agreement.

                                    Page 17


         Section 6.2 Press Releases.  Neither the  Stockholders nor any of their
Affiliates  shall  issue or cause to be issued any press  release in  connection
with or referring to any of the transactions contemplated by this Agreement.

         Section  6.3  Non-use  of Name.  From and  after  the date  hereof,  no
Stockholder  or  any  of  their  Affiliates  shall  establish  or  otherwise  be
associated with, as an owner, partner,  shareholder,  employee or otherwise, any
firm  which  utilizes  the name  "USI,"  "US/Intellicom,"  US/Intelicom"  or any
variant thereof  (collectively,  the "Names") as part of its business name other
than in connection  with their  employment by Pre-Cell  itself after the Closing
Date or grant to any person or entity the right to use the Names or any  variant
thereof.

         Section 6.4 Maintenance of USI Employee Medical Benefits. From the date
hereof,  through the last day of the month in which the Closing takes place, USI
shall continue to afford coverage under its existing health and medical plans to
those employees of USI that are covered under such plans as of the date hereof.

         Section 6.5 Lock-Up  Agreements.  Within thirty days after the Closing,
each of the  Stockholders  will  execute  and  deliver  to  Pre-Cell  a  Lock-Up
Agreement  substantially  in the form of  Exhibit  F annexed  to this  Agreement
pursuant to which they agree to not sell any shares of Common Stock  acquired by
them for the period of time indicated on Exhibit F.

         Section 6.6 Opinion of Counsel.  Within  thirty days after the Closing,
USI shall cause its  counsel,  Andre &  Blaustein,  LLP to deliver an opinion of
counsel  to  Pre-Cell  and  Merger  Subsidiary  in form and  content  reasonably
satisfactory to Pre-Cell, Merger Subsidiary and their counsel;

                                   ARTICLE VII
                              Covenants of Pre-Cell

         Section  7.1  Further  Assurances.  From time to time after the date of
this  Agreement,  Pre-Cell shall execute and deliver such other  instruments and
shall take such other  actions as the  Stockholders  may  reasonably  request to
effectuate the transactions contemplated by this Agreement.

         Section  7.2  Disclosure.  Pre-Cell  will not be required to obtain the
prior written consent of the  Stockholders to disclose the existence or any term
or condition of this  Agreement if Pre-Cell  believes  (based upon the advice of
counsel) such  disclosure is required  under the  securities  laws of the United
States.

                                    Page 18


         Section 7.3  Membership of Purchaser's Board of Directors.

             (a) As soon as reasonably  practicable  after the Merger,  Pre-Cell
agrees to hold an annual meeting of its  stockholders and to seek their approval
for an  increase  in the size of the Board from  three (3)  members to seven (7)
members.  Upon approval by the Pre-Cell shareholders of the increase of the size
of the Board,  Pre-Cell agrees to nominate for election and use its best efforts
to have  elected to its Board (i) two (2)  designees  selected  by the USI Major
Stockholders  (as  defined  in  the  Voting   Agreement)  so  long  as  the  USI
stockholders continue to hold an aggregate of at least 6,900,000 of the Pre-Cell
Shares  acquired n the  Merger;  and (ii) one (1)  designee  selected by the USI
Major  Stockholders  so long as the USI  stockholders  continue to own 3,450,000
Pre-Cell Shares acquired in the Merger.  In the event the USI  stockholders  own
less than 3,450,000 of Pre-Cell Shares acquired  hereunder,  Pre-Cell shall have
no further obligation hereunder to nominate any USI Nominees to the Board.

         Section  7.4  Release of  Guarantees.  Simultaneous  with the  Closing,
Pre-Cell shall cause the release of those guarantees and  accommodations  by the
Stockholders set forth in Schedule 7.4 who have exercised  options on the option
pool described in Section 7.5.

         Section  7.5 Option  Pool.  Pre-Cell  shall  establish  an option  pool
substantially in the form of Exhibit J (the "Option Pool Agreement") pursuant to
which those Stockholders listed on Schedule 7.5 (the "LOC  Stockholders")  shall
have the right to acquire Pre-Cell common stock at the prices and upon the terms
set forth in an Option  Pool  Agreement  executed  by the LOC  Stockholders  and
Pre-Cell.

         Section 7.6 Opinion of Counsel.  Within  thirty days after the Closing,
Pre-Cell shall cause its counsel,  Tobin & Reyes, P.A., to deliver an opinion of
counsel  to USI in  form  and  content  reasonably  satisfactory  to USI and its
counsel;

                                  ARTICLE VIII
                                  Miscellaneous

         Section 8.1  Survival of  Representations  and  Warranties.  All of the
respective representations and warranties of the parties to this Agreement shall
survive the consummation of the transactions contemplated by this Agreement. All
covenants of the parties to this Agreement shall survive the consummation of the
transactions contemplated by this Agreement.

         Section 8.2 Amendment and  Modification.  The parties to this Agreement
may amend,  modify and  supplement  this  Agreement but only in writing and such
writing must be signed by all the parties.

         Section 8.3 Binding  Effect.  This Agreement  shall be binding upon and
inure to the benefit of the parties and their  respective  successors,  assigns,
heirs, estates, beneficiaries, executors and legal and personal representatives.

                                    Page 19


         Section  8.4 Entire  Agreement.  This  instrument  and the  Exhibit and
Schedules attached to this Agreement contain the entire agreement of the parties
with respect to the acquisition and the other transactions  contemplated in this
Agreement,  and supersede all prior understandings and agreements of the parties
with  respect to the subject  matter of this  Agreement.  Any  reference in this
Agreement shall be deemed to include the Exhibits and the Schedules.

         Section 8.5 Headings.  The  descriptive  headings in this Agreement are
inserted for convenience only and do not constitute a part of this Agreement.

         Section 8.6 Execution in  Counterparts.  This Agreement may be executed
in any number of counterparts, each of which shall be deemed an original.

         Section 8.7 Notices.  Any notice,  demand or communication  required or
permitted to be given under any provision of this Agreement shall be given:  (i)
when sent by reputable overnight courier service which provides written proof of
delivery,  including  but not  limited to via  United  Parcel  Service,  Federal
Express, or other nationally  recognized carrier;  (ii) when hand-delivered;  or
(iii) when  transmitted  by  facsimile,  if such  facsimile  is confirmed to the
sender  and is  followed  by a hard copy of the  facsimile  communication  being
delivered to the party to be notified in accordance with the above, in each case
when  addressed  to the parties as set forth below,  or such other  addresses as
shall be specified by written notice delivered to the other parties.

If to Pre-Cell:            Pre-Cell Solutions, Inc.
                           385 East Drive
                           Melbourne, Florida 32904
                           Attn:  Thomas E. Biddix,
                                  Chief Executive Officer
                           Facsimile:  (407) 729-8484

With a copy to:            Tobin & Reyes, P.A.
                           7251 West Palmetto Park Road
                           Suite 205
                           Boca Raton, Florida 33433
                           Attn:  David S. Tobin, Esq.
                           Facsimile:  (561) 620-0656

or the Stockholders:       To the addresses set forth on Exhibit A


with a copy to:            Andre & Blaustein, LLP
                           The Candler Building
                           127 Peachtree Street, N.E.
                           Atlanta, Georgia 30303-1800
                           Attn:  Jon Blaustein, Esq.
                           Facsimile: (404) 653-0338

                                    Page 20


             All notices,  demands and  communications  shall be effective  when
sent. However, the time period in which to respond to any such notice, demand or
communication  shall  begin to run from the  date of  receipt  by the  addressee
thereof,  as  designated  on  the  return  receipt  of  the  notice,  demand  or
communication  or on the date of the actual  receipt in the case of  delivery by
other  means.  If a notice,  demand or  communication  is sent but not  actually
received by a party as a result of that party's  rejection  or other  refusal to
accept  delivery or the inability of the other party to deliver because a change
of address as to which no notice was given,  such  intended  recipient  shall be
deemed to be in receipt of the notice, demand or request once sent.

         Section 8.8  Governing  Law.  This  Agreement  shall be governed by and
construed  in  accordance  with the laws of the State of Florida  applicable  to
contracts made and to be performed in Florida without reference to the choice of
law principles.  Each Party hereby submits to the exclusive  jurisdiction of the
courts (city,  state and federal) located in the County of Palm Beach,  State of
Florida, pursuant to this Agreement or any other agreement,  instrument or other
document any action, proceeding or claim brought by any other Party executed and
delivered  in  connection  with this  Agreement or pursuant  hereto.  Service of
process in any such action or proceeding  brought against a Party may be made by
registered  mail addressed to such Party at the address set forth in Section 8.7
or to such other  address as such Party shall  notify the other Party in writing
is to be used for such purpose pursuant to Section 8.7. For purposes hereof, the
address  designated  for  USI  shall  also  be the  address  designated  for the
Stockholders.

         Section  8.9  Expenses.  All  accounting,  legal  and  other  costs and
expenses  incurred  in  connection  with  this  Agreement  and the  transactions
contemplated  by this Agreement shall be paid by the party incurring those fees,
costs and expenses.

         Section 8.10 Waiver.  Any party to this  Agreement  may extend the time
for or waive the performance of any of the  obligations of the other,  waive any
inaccuracies  in the  representations  or  warranties  by the  other,  or  waive
compliance  by the other with any of the  covenants or  conditions  contained in
this  Agreement.  Any such extension or waiver shall be in writing and signed by
the  parties.  No such waiver  shall  operate or be construed as a waiver of any
subsequent act or omission of the parties.

         Section 8.11 Severability.  The invalidity or  unenforceability  of any
one or more of the words, phrases, sentences,  clauses, or sections contained in
this Agreement shall not affect the validity or  enforceability of the remaining
provisions  of this  Agreement  or any part of any  provision,  all of which are
inserted  conditionally  on their being valid in law,  and in the event that any
one or more of the words, phrases,  sentences,  clauses or sections contained in
this Agreement shall be declared invalid or unenforceable,  this Agreement shall
be  construed  as if such  invalid  or  unenforceable  word or words,  phrase or
phrases,  sentence or sentences,  clause or clauses,  or section or sections had
not been inserted or shall be enforced as nearly as possible  according to their
original  terms and intent to eliminate any invalidity or  unenforceability.  If
any invalidity or unenforceability is caused by the length of any period of time
or the size of any area set forth in any part of this  Agreement,  the period of

                                    Page 21


time or area,  or both,  shall be  considered  to be reduced to a period or area
which would cure the invalidity or unenforceability.

         Section  8.12  Attorney's  Fees.  In the  event of any  arbitration  or
litigation,  including  appeals,  with regard to this Agreement,  the prevailing
party shall be entitled to recover from the non-prevailing  party all reasonable
fees, costs, and expenses of counsel (at pre-trial, trial and appellate levels).

         Section 8.13 No Breach.  The parties  agree that the  execution of this
Agreement  shall not be deemed to be an assignment of any contract where consent
to such  assignment  is required by the terms of the contract  provided that the
foregoing shall not affect USI' obligation to obtain all consents as provided in
this Agreement.

         Section 8.14  Construction.  This Agreement shall be construed  without
regard to any presumption or other rule requiring construction against the party
causing this  Agreement to be drafted.  If any words in this Agreement have been
stricken out or otherwise  eliminated (whether or not any other words or phrases
have been added) and the stricken words  initialed by the party against whom the
words  are  construed,  this  Agreement  shall be  construed  as if the words so
stricken out or otherwise  eliminated  were never included in this Agreement and
no implication  or inference  shall be drawn from the fact that those words were
stricken out or otherwise eliminated.

         Section 8.15 No Jury Trial EACH PARTY WAIVES ALL RIGHTS TO ANY TRIAL BY
JURY IN ALL LITIGATION RELATING TO OR ARISING OUT OF THIS AGREEMENT.

                            [signatures on next page]

                                    Page 22


         IN WITNESS  WHEREOF,  the  parties to this  Agreement  have caused this
Agreement to be duly executed as of the date hereof.

                                           PRE-CELL SOLUTIONS, INC.,
                                           a Colorado corporation

                                           By: /s/ Thomas E. Biddix
                                               -----------------------------
                                               Thomas E. Biddix,
                                               Chief Executive Officer

                                           USI MERGER CORP.

                                           a Georgia corporation

                                           By:  /s/ Thomas E. Biddix
                                               -----------------------------
                                               Thomas E. Biddix,
                                               President

                                           US/INTELICOM, INC.,

                                           a Georgia corporation

                                           By: /s/ Ronald Kindland
                                               -----------------------------
                                               Ronald Kindland,
                                               Chief Executive Officer


                                    Page 23