EXHIBIT 10.43

                             PURCHASE AND SALE AGREEMENT
                               AND ESCROW INSTRUCTIONS


                      (940 Clopper Road, Gaithersburg, Maryland)


                                    BY AND BETWEEN

                     THE VARIABLE ANNUITY LIFE INSURANCE COMPANY

                                         AND

                        ALEXANDRIA REAL ESTATE EQUITIES, INC.


                            PURCHASE AND SALE AGREEMENT
                               AND ESCROW INSTRUCTIONS

                      (940 Clopper Road, Gaithersburg, Maryland)        

         This Purchase and Sale Agreement and Escrow Instructions 
("Agreement") is made this ____ day of __________, 1997, between THE VARIABLE 
ANNUITY LIFE INSURANCE COMPANY, a Texas corporation ("Seller"), and 
ALEXANDRIA REAL ESTATE EQUITIES, INC., a Maryland corporation ("Purchaser"), 
effective on the date ("Effective Date"), a fully executed counterpart of 
this Agreement is receipted by the Escrow Agent (defined below), for the 
purposes of setting forth the agreement of Seller and Purchaser and of 
instructing the Escrow Agent with respect to the transactions contemplated by 
this Agreement.

                                     WITNESSETH:

    1. DEFINITIONS. As used in this Agreement and any exhibits annexed 
hereto, unless the context otherwise requires or is otherwise herein 
expressly provided, the following terms shall have the following meanings:

     (a) AGENT: The Carey Winston Company, One Thomas Circle, Suite 1000, 
     Washington, D.C. 20005, Attention: Mr. John E. Duffy, as Agent for 
     Seller only; and Smithy Braedon/ONCOR International, 6550 Rock Springs
     Drive, Bethesda, Maryland 20817-1132, as Agent for Purchaser, only.

     (b) CASH: Cash shall mean legal tender of the United States for the payment
     of debts, or a certified check or cashier's check or wire transfer of 
     current funds, the particular one of the aforesaid modes of payment to be
     determined by Purchaser.

     (c) CLOSING DATE: The fifteenth (15th) day after the Due Diligence
     Termination Date or the next business day if such date falls on a weekend 
     or legal holiday or such other day as may be agreed upon in writing by 
     Seller and Purchaser.

     (d) DUE DILIGENCE TERMINATION DATE: The last day of the Inspection Period
     (I.E., the forty-fifth (45th) day after the Effective Date).

     (e) EARNEST MONEY: The sum of (i) the "Initial Earnest Money" of Fifty 
     Thousand and No/100 Dollars ($50,000.00), Cash, which Purchaser shall 
     deposit with the Escrow Agent contemporaneously with the deposit of this
     Agreement with the Escrow Agent and (ii) the "Interim Earnest Money" of 
     One Hundred Thousand and No/100 Dollars ($100,000.00), Cash, which 
     Purchaser shall deposit with the Escrow Agent on or before the Due 
     Diligence Termination Date. Immediately following receipt, the Escrow 
     Agent shall place the Initial Earnest Money and Interim Earnest Money 
     (together, the "Earnest



     Money") in an interest bearing account in an institution approved by 
     Seller and Purchaser. The interest thus derived shall become part of the 
     Earnest Money and shall be paid to the party entitled to the Earnest 
     Money in accordance with the terms hereof.

     (f) EFFECTIVE DATE: The date a fully executed counterpart hereof 
     together with the Initial Earnest Money is receipted by the Escrow Agent.

     (g) ESCROW AGENT: Watt, Tieder & Hoffar, L.L.P., 7929 Westpark Drive, 
     Suite 400, McLean, Virginia 22102, Attention: Wayne G. Tatusko, Esq., 
     Telephone: (703) 749-1088; Facsimile: (703) 356-5388.

     (h) INSPECTION PERIOD: The period commencing on the Effective Date and 
     terminating at the close of business of the forty-fifth (45th) day 
     thereafter. During the Inspection Period Purchaser may conduct the 
     inspection described in Section 13 below.

     (i) LAND: That certain tract or parcel of land located in the City of 
     Gaithersburg, Montgomery County, Maryland and being more particularly 
     described on EXHIBIT A attached hereto, and made a part hereof for all 
     purposes, together with all rights, privileges and easements appurtenant 
     thereto or used in connection therewith, (but without warranty, 
     whether statutory, express or implied), including, without limitation, 
     all minerals, oil, gas and other hydrocarbon substances thereon, all 
     development rights, air rights, water, water rights and water stock 
     relating thereto, all strips and gores, and all of Seller's right, title 
     and interest, if any (but without warranty, whether statutory, express 
     or implied) in and to any streets, alleys, easements, rights-of-way, or 
     other rights appurtenant, adjacent or connected thereto or used in 
     connection therewith.
     
     (j) OPTION CONSIDERATION: The sum of One Hundred and No/100 Dollars 
     ($100.00) as consideration for Purchaser's right to terminate this 
     Agreement during the Inspection Period as provided in Section 13 below.
     
     (k) PROPERTY: (a) The Land and (b) all buildings, together with all 
     other improvements owned by Seller situated on the Land, and all 
     fixtures and other property owned by Seller permanently affixed thereto 
     (the "Improvements"), and (c) all of Seller's right, title and interest 
     in and to the equipment, furnishings, furniture and other personal 
     property (the "Personal Property") owned by Seller and now located on or 
     within the Land and improvements and used in connection therewith: and 
     (d) all right, title and interest of Seller, as Landlord, under the 
     Tenant Leases.
     
     (l) PURCHASE PRICE: The sum of Three Million Five Hundred Ninety-Four 
     Thousand Eight Hundred and No/100 Dollar ($3,594,800.00), payable in 
     Cash at the Closing (subject to customary adjustments and prorations as 
     hereinafter provided).
     
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     (m) PURCHASER: ALEXANDRIA REAL ESTATE EQUITIES, INC., address for notice 
     is:

           Alexandria Real Estate Equities, Inc. 
           251 South Lake Avenue, Suite 700 
           Pasadena, California 91101 
           Attn: Joel S. Marcus 
           Telephone: (818) 578-0777 
           Facsimile: (818) 578-0770

     with a copy to:

           Alexandria Real Estate Equities, Inc.
           11440 West Bernardo Court, Suite 170 
           San Diego, California 92127 
           Attention: Alan D. Gold 
           Telephone: (619) 592-6801
           Facsimile: (619) 592 6814 

     and with an additional copy to:

           George M. Eshaghian, Esq.
           Skadden, Arps, Slate, Meagher & Flom
           300 South Grand Avenue
           Los Angeles, California 90071-3144
           Telephone: (213) 687-5000
           Facsimile: (213) 687-5600

     (n) SELLER: The Variable Annuity Life Insurance Company, a Texas 
     corporation, whose address for notice is:

           c/o American General Realty Advisors, Inc.
           2929 Allen Parkway, 40th Floor
           Houston, Texas 77019
           Attention: Mr. J. Brady Wilkins
           Telephone: (713) 831-2761
           Fax: (713) 831-2419

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With a copy to:

           American General Realty Advisors, Inc.
           2929 Allen Parkway, 36th Floor
           Houston, Texas 77019
           Attention: Ned W. Graber, Esquire
           Telephone: (713) 831-2559
           Fax: (713) 831-1266

With an additional copy to:

           Wayne G. Tatusko, Esq.
           Watt, Tieder & Hoffar, L.L.P.
           7929 Westpark Drive, Suite 400
           McLean, Virginia 22102
           Telephone: (703) 749-1088
           Fax: (703) 356-5388

    2.   PURCHASE AND SALE. For the consideration hereinafter set forth, 
but subject to the terms, provisions, covenants and conditions herein 
contained, Seller hereby agrees to sell and convey, and Purchaser hereby 
agrees to purchase the Property and pay to Seller as consideration 
therefor the Purchase Price.

    3. EARNEST MONEY. Contemporaneously with the delivery of an executed
counterpart of this Agreement in escrow, Purchaser will (a) deposit with the
Escrow Agent in Cash the Initial Earnest Money, and (b) pay to Seller by check
in good and sufficient funds the non-refundable sum of $100.00 for Purchaser's
option rights in this Agreement. On or before the Due Diligence Termination
Date, unless this Agreement has theretofore been terminated, Purchaser shall
deposit with the Escrow Agent in Cash the Interim Earnest Money. If the sale
hereunder is consummated in accordance with the terms hereof, the Earnest Money
shall be applied to the Purchase Price to be paid by Purchaser at the Closing.
In the event of default hereunder by Purchaser or Seller, the Earnest Money
shall be applied as provided herein. If this Agreement is terminated by
Purchaser in accordance with Purchaser's right to do so under the terms hereof,
the Earnest Money shall be returned to Purchaser upon satisfaction of the
conditions set forth in Section 39. The Escrow Agent agrees promptly to deliver,
or cause to be delivered, to Seller and Purchaser a written acknowledgment by
Escrow Agent that the Initial Earnest Money and a copy of this Agreement have
been received by the Escrow Agent and that the Earnest Money is being held by
the Escrow Agent pursuant to the terms of this Agreement. In the event Purchaser
shall fail to deposit (i) the Initial Earnest Money in Cash with the Escrow
Agent within two (2) business days after delivery of a fully executed copy of
this Agreement to the Escrow Agent, or (ii) the Interim Earnest Money in Cash
with the Escrow Agent by the Due Diligence Termination Date, then in either such
event this Agreement shall automatically terminate with the same force

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and affect as if Purchaser had duly terminated this Agreement.

     4. REPRESENTATIONS OF SELLER.  Seller represents to Purchaser that:

         (a) (i) Seller is duly organized and legally existing under the laws 
     of the State of Texas, (ii) the execution and delivery by Seller of, and 
     Seller's performance under, this Agreement are within Seller's powers 
     and have been duly authorized by all requisite corporate action, and 
     (iii) the person executing this Agreement on behalf of Seller has the 
     authority to do so.
     
         (b) To Seller's knowledge Seller has received no written notice from 
     any governmental authority having jurisdiction over the Property that 
     the Property is presently the subject of any condemnation, assessment or 
     similar proceeding or charge, and to Seller's knowledge, no such 
     condemnation, assessment or similar proceeding or charge is currently 
     threatened.

         (c) Seller is not a "foreign person" within the meaning of Section 
     1445 of the Internal Revenue Code of 1986 (i.e., Seller is not a 
     non-resident alien, foreign corporation, foreign partnership, foreign 
     trust or foreign estate as those terms are defined in the Code and 
     regulations promulgated thereunder).
     
         (d) This Agreement constitutes the legal, valid and binding 
     obligation of Seller enforceable in accordance with its terms, subject 
     to laws applicable generally to creditor's rights. Performance of this 
     Agreement will not result in any breach of, or constitute any default 
     under, any agreement or other instrument to which Seller is a party or 
     by which Seller might be bound.

     As used in this Section 4, the term "to Seller's knowledge" (a) 
shall mean and apply to the actual knowledge of the responsible 
employees of Seller who are directly engaged in the management and sale 
and purchase transaction described herein and not to any other parties, 
(b) shall mean the actual knowledge of such responsible employees, it 
being understood and acknowledged that such responsible employees are 
not charged with knowledge of all of the acts and/or omissions of the 
predecessors in title to the Property or with knowledge of all of the 
acts and/or omissions of Seller's agents or employees, and (c) shall not 
apply to or be construed to apply to information or material which may 
be in the possession of Seller generally or incidentally, but which is 
not actually known to the responsible employees of Seller who are 
directly engaged in the sale and purchase transaction described herein. 
The responsible employee of Seller directly engaged in the sale and 
purchase transaction herein is J. Brady Wilkins.

    If such representations are not true and correct as of Closing, 
Purchaser may, at its option, and as its sole remedy, at law or in 
equity, either waive such misrepresentations and close this

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transaction, or terminate this Agreement by written notice thereof to 
Seller, in which latter event the parties shall have no further rights 
or obligations hereunder (other than Purchaser's confidentiality and 
indemnity obligations set forth in Sections 13, 23 and 38) except that 
the Earnest Money shall be paid to Purchaser.

     5.   REPRESENTATIONS OF PURCHASER. Purchaser represents to Seller that:

         (a) (i) Purchaser is duly organized and legally existing under the 
     laws of the State of Maryland, (ii) the execution and delivery by 
     Purchaser of, and Purchaser's performance under, this Agreement, are 
     within Purchaser's powers and have been duly authorized by all requisite 
     corporate action, and (iii) the person executing this Agreement on 
     behalf of Purchaser has the authority to do so.
     
         (b) This Agreement constitutes the legal, valid and binding 
     obligation of Purchaser enforceable in accordance with its terms, 
     subject to laws applicable generally to creditor's rights. Performance 
     of this Agreement will not result in any breach of, or constitute any 
     default under, any agreement or other instrument to which Purchaser is a 
     party or by which Purchaser might be bound,
     
         (c) Purchaser is not in a significantly disparate bargaining 
     position with Seller.
     
         (d) Purchaser is represented by legal counsel in the transaction 
     relating to this Agreement, and Purchaser has knowledge and experience 
     in financial and business matters that enable it to evaluate the merits 
     and risks of this transaction.
     
    If such representations are not true and correct as of Closing, Seller may,
at its option, either waive such misrepresentations and close this transaction,
or terminate this Agreement by written notice thereof to Purchaser, in which
latter event the parties shall have no further rights or obligations hereunder
except that the Earnest Money shall be paid to Seller, if Seller otherwise is
ready, willing and able to close. The term "Purchaser" used in this Section
shall include any permitted assignee of Purchaser's interest under this
Agreement.

     6. SURVEY. Purchaser may, at Purchaser's expense, obtain a new or updated
survey of the Property,

     7. OWNER'S TITLE POLICY COMMITMENT. Purchaser, at Purchaser's sole expense,
shall obtain as soon as reasonably possible after the Effective Date a current
A.L.T.A. coverage commitment for title insurance (herein called the "Preliminary
Report") issued by a title company selected by Purchaser (the "Title Company"),
showing the status of title to the Property according to the Title Company and
committing to issue the owner's title policy to Purchaser called for under
Section 19(c) of this Agreement. The Title Company shall also deliver to

                                       6


Purchaser copies of all documents referred to as exceptions in the 
Preliminary Report. If any exceptions appear in the Preliminary Report, that 
affect the Property and that are unacceptable to Purchaser, Purchaser shall, 
not less than ten (10) days prior to expiration of the Inspection Period, 
notify Seller in writing of such fact and the reasons therefor ("Purchaser's 
Title Objections"). If Purchaser does not provide Seller with Purchaser's 
Title Objections prior to said ten (10) day period, Purchaser shall be deemed 
to have accepted all exceptions to title and all other matters shown on the 
Preliminary Report (including the standard printed exceptions) and such 
exceptions shall be included in the term "Permitted Encumbrances" as used 
herein, except, however, those title matters to which Purchaser has timely 
objected, in accordance with the preceding sentence. Notwithstanding anything 
to the contrary contained herein, Seller shall have no obligation to bring 
any action or proceeding or otherwise to incur any expense whatsoever to 
eliminate or modify Purchaser's Title Objections. If Seller is unable or 
unwilling to eliminate or modify Purchaser's Title Objections to the 
reasonable satisfaction of Purchaser, Purchaser shall (as its sole and 
exclusive remedy) terminate this Agreement by notice in writing to Seller by 
the earlier to occur of (i) the Closing Date or (ii) five (5) business days 
following notice from Seller that it is unwilling or unable to eliminate or 
modify Purchaser's Title Objections or shall accept such title as Seller can 
deliver without any reduction in the Purchase Price, in which event such 
uncured Purchaser's Title Objections shall be included in the term "Permitted 
Encumbrances." If Purchaser does not elect to terminate within the period 
described in the immediately preceding sentence, Purchaser shall be deemed to 
have accepted all exceptions to title and all other matters shown on the 
Preliminary Report and such exceptions shall be included in the term 
"Permitted Encumbrances." In the event of termination pursuant to this 
Section, the parties shall have no further rights or obligations hereunder 
(except for Purchaser's confidentiality and indemnity obligations set forth 
in Sections 13, 23 and 38) and the Earnest Money shall be returned to 
Purchaser upon satisfaction of the conditions set forth in Section 39.

     8. CONDITIONS TO PURCHASER'S OBLIGATIONS. The following shall be
conditions precedent to Purchaser's obligations hereunder:

         (a) All of the representations of Seller contained in Section 4 of 
     this Agreement shall be true at, and as of, the Closing in all material 
     respects unless otherwise disclosed in writing and approved by Purchaser.
     
         (b) Seller shall not, as of the Closing, be in receivership or 
     dissolution, or admitted in writing its inability to pay its debts as 
     they mature, or have been adjudicated a bankrupt, or have filed a 
     petition in voluntary bankruptcy, a petition or answer seeking 
     reorganization, or an arrangement with creditors under the federal 
     bankruptcy law, or any other similar law or statute of the United States 
     or any state, and such petition shall not have been filed against Seller 
     which has not been dismissed within sixty (60) days of such filing.
     
          (c) Seller shall have performed, observed and complied with all 
     covenants,
     
                                       7


     agreement and conditions required by this Agreement to be performed, 
     observed and complied with by Seller prior to, or as of, the Closing.
     
         (d) Subject to the provisions of Section 17, the physical condition 
     of the Property shall be substantially the same on the Closing Date as 
     on the date of the execution of this Agreement, except for reasonable 
     wear and tear and any damages due to any act of Purchaser.
     
     9. CONDITIONS TO SELLER'S OBLIGATIONS. The following shall be conditions
precedent to Seller's obligations hereunder:

         (a) All of the representations of Purchaser contained in Section 5 
     of this Agreement shall be true at, and as of, the Closing in all 
     material respects unless otherwise disclosed in writing and approved by 
     Seller.
     
         (b) Purchaser shall have performed, observed and complied with all 
     covenants, agreements and conditions required by this Agreement to be 
     performed, observed and complied with by Purchaser prior to, or as of, 
     the Closing.
     
         (c) Purchaser shall not, as of the Closing, be in receivership or 
     dissolution, or have made any assignment for the benefit of creditors, 
     or admitted in writing its inability to pay its debts as they mature, or 
     have been adjudicated a bankrupt, or have filed a petition in voluntary 
     bankruptcy, a petition or answer seeking reorganization, or an 
     arrangement with creditors under the federal bankruptcy law, or any 
     other similar law or statute of the United States or any state, and such 
     petition shall not have been filed against Purchaser which has not been 
     dismissed within sixty (60) days of such filing.
          
         (d) Purchaser shall have executed the Purchaser's Affidavit on 
     EXHIBIT C attached here attached hereto and made a part hereof.
     
     10. COVENANTS OF PURCHASER AND SELLER. Purchaser and Seller covenant and
agree with each other that prior to the Closing, Purchaser and Seller will do
such further acts as may be reasonably necessary, desirable or proper to carry
out more effectively the purposes of this Agreement. Purchaser covenants that it
will not interfere unreasonably with or hinder the operation of the Property
prior to the delivery of possession thereof to Purchaser following the Closing
hereunder.

    11. DELIVERY OF INFORMATION. Within five (5) days after the Effective Date,
Seller shall furnish, or cause to be furnished, to Purchaser, to the extent such
items are within seller's possession and to the extent such items have not
previously been furnished to Purchaser, the following:

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          (a) copies of all of the Tenant Leases;
 
          (b) a current rent roll, prepared by Seller's manager of the 
              Property, listing tenant names and monthly rentals;

          (c) copies of all the "Contracts" (defined in Section 14 below) 
              whether or not cancelable upon thirty (30) days' notice or less;

          (d) copies of operating statements, prepared by Seller's manager of 
              the Property, for each of the last twelve (12) months that Seller 
              has owned the Property;

          (e) copies of any environmental reports Seller has in its 
              possession; provided, however, Seller makes no representations or 
              warranties as to the accuracy of any such environmental reports 
              and shall have no liability with respect to any matters contained 
              therein (or omitted therefrom); and

          (f) a copy of the survey in Seller's possession.

          (g) any other information with respect to the operation and 
              maintenance of the Property relating to periods after Seller's 
              acquiring title thereto which is not confidential to Seller.

    In addition, Seller agrees to use commercially reasonable efforts to 
obtain estoppel certificates from the existing tenants prior to the 
expiration of the Inspection Period. The form of the estoppel shall be 
mutually acceptable to Purchaser and Seller.

     12. LEASE EXPENSES.

          (a) Leasing Commissions. Seller shall indemnify and hold Purchaser 
     harmless from any claims for leasing commissions payable during the 
     current terms of the Tenant Leases (specifically excluding therefrom any 
     future renewal terms or options or rights to expand) and any commissions 
     relating to any existing Tenant Leases or new leases which arose or 
     accrued subsequent to the' Effective Date but prior to the Closing 
     Date. Purchaser shall indemnify and hold Seller harmless from any claims 
     for leasing commissions under the Tenant Leases except those for which 
     Seller is liable as set forth herein. Purchaser agrees to cooperate with 
     and to assist Seller in obtaining a complete release of liability for 
     payment of all commissions for which Purchaser is liable hereunder and 
     to indemnify and hold Seller harmless from the same.

         (b) Lease Expense Reimbursement. If the transaction is consummated, 
     Purchaser shall (i) reimburse Seller on the Closing Date for any and all 
     fees paid or
     
                                       9


    expenses (such as leasing commissions, tenant improvement costs, 
    attorney's fees and architect's fees) incurred by Seller arising out of 
    or in connection with (a) any extensions, renewals or expansions under the 
    Tenant Leases which were approved by Seller and Purchaser on or after the 
    Effective Date and (b) any new leases within the Project, which were 
    approved by Seller and Purchaser on or after the Effective Date 
    (collectively, the "Expenses") and (ii) assume all of Seller's 
    obligations for all Tenant Leases disclosed to Purchaser not entered into 
    or signed by Seller and shall assume the obligations for and indemnify 
    and hold Seller harmless from and against any and all claims for the 
    Expenses which remain unpaid for any reason at the time of Closing. If 
    Seller desires to execute a renewal, amendment, extension or expansion of 
    a Lease or a new lease with a potential tenant for space in the Property 
    after the Effective Date but prior to Closing, Seller shall promptly 
    provide Purchaser with a copy of the proposed document for its review, 
    together with a reasonably detailed summary of Seller's anticipated 
    improvement costs, tenant improvement allowances, brokerage commissions 
    and out-of-pocket costs and expenses in connection with the new lease or 
    extension, renewal, expansion or amendment. Purchaser shall advise 
    Seller, in writing, whether or not it approves such proposed document 
    within five (5) business days after receipt of the proposed document. 
    Prior to the end of the Inspection Period, Purchaser's approval shall not 
    be unreasonably withheld, delayed or conditioned. After the end of the 
    Inspection Period, Purchaser's approval may be withheld in Purchaser's 
    sole discretion. If Purchaser fails to notify Seller within such time 
    period, Purchaser shall be deemed to have approved the proposed document.

    13. INSPECTION. During the Inspection Period Purchaser shall have the 
right to inspect and investigate such matters as Purchaser, in its sole 
discretion, deems necessary or advisable, and to cause one or more engineers 
or other representatives or agents of Purchaser to physically inspect the 
Property without unreasonably interfering with Seller's operation of the 
Property. Purchaser shall make such inspections in good faith and with due 
diligence. All inspection fees, appraisal fees, engineering fees and other 
expenses of any kind incurred by Purchaser relating to the inspection of the 
Property will be solely Purchaser's expense. Seller shall cooperate with 
Purchaser in all reasonable respects in making such inspections; however, 
Seller shall not be obligated to expend funds or other costs in connection 
with such cooperation. Seller hereby reserves the right to have a 
representative present at the time Purchaser conducts any inspection of the 
Property. Purchaser shall notify Seller not less than one (1) business day in 
advance of making any such inspection. In making any inspection, Purchaser 
will treat, and will cause any representative of Purchaser to treat, all 
information obtained by Purchaser pursuant to the terms of this Agreement as 
strictly confidential. Purchaser agrees to indemnify and hold Seller, its 
tenants, contractors and employees harmless from any and all injures, losses, 
liens, claims, judgments, liabilities, costs, expenses or damages (including 
reasonable attorneys' fees and court costs) sustained by or threatened 
against Seller which result from or arise out of any inspections by Purchaser 
or its authorized representatives pursuant to this Section. Notwithstanding 
any provision herein to the contrary, the indemnity contained in the 
preceding sentence shall survive

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the termination of this Agreement or the Closing. In the event Purchaser 
determines as a result of the foregoing that the condition of the Property is 
deficient in any respect or for any reason in Purchaser's sole and absolute 
discretion, Purchaser may elect to terminate this Agreement by delivering 
written notice thereof to Seller prior to the expiration of the Inspection 
Period. Purchaser may continue to inspect the Property during the pendency of 
this Agreement, subject to said indemnity, but without additional termination 
rights after the expiration of the Inspection Period. Notwithstanding the 
timely exercise of Purchaser's election to terminate this Agreement pursuant 
to the preceding sentence, Purchaser shall not be entitled to a refund of 
the Earnest Money until such time as Purchaser has satisfied the conditions 
set forth in Section 39.

PURCHASER ACKNOWLEDGES THAT SELLER HAS NOT MADE, DOES NOT MAKE, AND 
SPECIFICALLY NEGATES, RENOUNCES AND DISCLAIMS ANY REPRESENTATIONS, 
WARRANTIES, PROMISES, COVENANTS, AGREEMENTS OR GUARANTEES OF ANY KIND OR 
CHARACTER WHATSOEVER, WHETHER EXPRESS OR IMPLIED, ORAL OR WRITTEN, OF, AS TO, 
CONCERNING, OR WITH RESPECT TO, (i) THE VALUE, NATURE, QUALITY OR CONDITION 
OF THE PROPERTY, INCLUDING, WITHOUT LIMITATION, THE WATER, SOIL AND GEOLOGY, 
(ii) THE SUITABILITY OF THE PROPERTY FOR ANY AND ALL ACTIVITIES AND USES 
WHICH MAY BE CONDUCTED THEREON, (iii) THE COMPLIANCE OF OR BY THE PROPERTY 
WITH ANY LAWS, RULES, ORDINANCES OR REGULATIONS OF ANY APPLICABLE 
GOVERNMENTAL AUTHORITY OR BODY, (iv) THE HABITABILITY, MERCHANTABILITY, 
MARKETABILITY, PROFITABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE 
PROPERTY, OR (v) ANY OTHER MATTER WITH RESPECT TO THE PROPERTY, AND 
SPECIFICALLY, THAT SELLER HAS NOT MADE, DOES NOT MAKE AND SPECIFICALLY 
NEGATES, RENOUNCES AND DISCLAIMS ANY REPRESENTATIONS OR WARRANTIES, REGARDING 
COMPLIANCE OF THE PROPERTY WITH ANY ENVIRONMENTAL PROTECTION, POLLUTION OR 
LAND USE LAWS, RULES. REGULATIONS, ORDERS OR REQUIREMENTS, INCLUDING, WITHOUT 
LIMITATION, THOSE PERTAINING TO SOLID WASTE, AS DEFINED BY THE U.S. 
ENVIRONMENTAL PROTECTION AGENCY REGULATIONS AT 40 C.F.R., PART 261, OR THE 
DISPOSAL OR EXISTENCE, IN OR ON THE PROPERTY, OF ANY HAZARDOUS SUBSTANCES, AS 
DEFINED BY THE COMPREHENSIVE ENVIRONMENTAL RESPONSE COMPENSATION AND 
LIABILITY ACT OF 1980, AS AMENDED, AND THE REGULATIONS PROMULGATED 
THEREUNDER. PURCHASER SHALL RELY SOLELY ON ITS OWN INVESTIGATION OF THE 
PROPERTY AND NOT ON ANY INFORMATION PROVIDED OR TO BE PROVIDED BY SELLER, ITS 
AGENTS OR CONTRACTORS. SELLER SHALL NOT BE LIABLE OR BOUND IN ANY MANNER BY 
ANY VERBAL OR WRITTEN STATEMENTS, REPRESENTATIONS OR INFORMATION PERTAINING 
TO THE PROPERTY OR THE OPERATION THEREOF, FURNISHED BY ANY PARTY PURPORTING 
TO ACT ON BEHALF OF SELLER.

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    THE PARTIES AND EACH OF THEM MUTUALLY, EXPRESSLY, KNOWINGLY, AND 
INTENTIONALLY, WAIVE ALL RIGHTS AND PROTECTIONS UNDER APPLICABLE LAW EXCEPT 
FOR THOSE EXPRESSLY RESERVED OR PROVIDED FOR HEREIN.

    14. MANAGEMENT, SERVICE, SUPPLY OR MAINTENANCE CONTRACTS, AFFECTING THE 
PROPERTY. Seller shall cancel all service, supply or maintenance contracts 
affecting the Property on the Closing Date (i) unless Purchaser notifies 
Seller, in writing, within ten (10) business days after the receipt by 
Purchaser of copies of such contracts or (ii) unless such contracts are not 
cancelable on thirty (30) days or less notice. Purchaser's written notice 
referred to in the preceding sentence shall specify the contracts it does not 
want to cancel and Purchaser shall assume payment of all such sums due and 
owing from and after the Closing Date on the contracts it assumes or is 
deemed to have as turned under subpart (ii) above and all liability from and 
after the Closing Date under such contracts it assumes or is deemed to have 
assumed under subpart (ii) above (the "Contracts"). Seller's Management 
Contract with Seller's Manager will not be assigned to Purchaser at Closing 
but will be canceled by Seller at Closing.

    15. PROPERTY INFORMATION FROM SELLER'S AGENTS. Subsequent to the Effective 
Date of this Agreement, Purchaser may request from Seller's agents (brokers, 
contractors, or similar individuals or entities engaged by Seller relating to 
or involving the Property) information or opinions regarding the Property or 
some aspect of the Property, its history, condition or prospects for future 
use or development by Purchaser. While Seller is willing to cooperate with 
Purchaser, and Seller has instructed its agents to cooperate with Purchaser, 
SELLER IS UNWILLING TO SELL THE PROPERTY UNLESS SELLER IS RELEASED FROM 
LIABILITY BY PURCHASER FOR (i) STATEMENTS OR OPINIONS MADE BY OR INFORMATION 
FURNISHED BY SELLER'S AGENTS UNLESS THE STATEMENTS OR OPINIONS ARE 
INCORPORATED AS SELLER REPRESENTATIONS INTO THE CLOSING DOCUMENTS EXECUTED BY 
SELLER OR (ii) INFORMATION WITHHELD BY SELLER'S AGENTS UNLESS SUCH 
INFORMATION WAS WITHHELD AT THE EXPRESS DIRECTION OF AN OFFICER OF SELLER.

    16. PURCHASER'S AFFIDAVIT: CONDITION OF CLOSING. It is a condition 
precedent to the Closing of this Transaction and Seller's obligation to 
deliver the Special Warranty Deed that Seller receive at Closing from 
Purchaser the form of sworn Affidavit and Agreement attached hereto as 
EXHIBIT C, which reflects statements of fact together with supporting 
documentation as outlined in this Section. The Affidavit is intended to 
reflect and support the fact that Purchaser and experts of Purchaser's choice 
have (i) physically inspected the Property, (ii) determined the fair market 
value of the Property in its "AS IS" condition, (iii) analyzed the present 
and projected uses, of the Property, (iv) independently verified the 
completeness and accuracy of all information deemed necessary or material by 
Purchaser to close and (v) independently tested and examined the Property 
from a physical, structural and environmental standpoint and that Purchaser 
accepts the Property AS IS and further releases Seller from and waives all 
claims and

                                      12


liability against Seller for any structural, physical or environmental 
condition at the Property and further releases Seller from and waives all 
liability against Seller for, connected with or arising out of any and all 
CERCLA (Comprehensive Environmental Response, Compensation, and Liability Act 
of 1980, as may be amended from time to time) based claims or causes of 
action or any related claims or causes of action or any other federal or 
state based statutory or regulatory causes of action for environmental 
contamination at, in or under the Property. The Affidavit shall confirm that 
Purchaser is not relying upon any representation, inducement or unperformed 
promise of Seller or Seller's agents except to the extent such inducement, 
representation or unperformed promise as set forth in the Purchaser's 
Affidavit or the Closing Documents to be executed by Seller as attached 
hereto. A copy of Purchaser's property inspection and environmental 
assessment reports shall be attached to the Affidavit with a representation 
that Purchaser has relied upon Purchaser's reports in reaching its decision 
to purchase the Property, and Purchaser is not relying upon Seller produced 
inspection reports which are older and possibly incomplete and/or outdated. 
IF THE AFFIDAVIT REFLECTS THAT PURCHASER IS RELYING UPON A REPRESENTATION, 
INDUCEMENT OR UNPERFORMED PROMISE NOT AUTHORIZED IN WRITING BY AN OFFICER OF 
SELLER, SELLER SHALL HAVE THE OPTION NOT TO CLOSE THIS TRANSACTION IN WHICH 
EVENT AT SELLER'S OPTION THIS CONTRACT SHALL TERMINATE, THE EARNEST MONEY 
(EXCEPT AS OTHERWISE PROVIDED IN THIS AGREEMENT) SHALL BE RETURNED TO 
PURCHASER AND THEREAFTER SELLER AND PURCHASER SHALL HAVE NO FURTHER 
OBLIGATIONS OR LIABILITIES ONE TO THE OTHER HEREUNDER. THE PARTIES AND EACH 
OF THEM MUTUALLY, EXPRESSLY, KNOWINGLY, AND INTENTIONALLY, WAIVE ALL RIGHTS 
AND PROTECTIONS UNDER APPLICABLE LAWS, EXCEPT FOR THOSE EXPRESSLY RESERVED 
HEREIN.

    17. FIRE AND OTHER CASUALTY. In the event of damage to or destruction of 
all or any portion of the Property by fire or other casualty, Seller will 
promptly notify Purchaser of the nature and extent of such damage or 
destruction, the amount estimated to be expended to repair or restore the 
damaged or destroyed Property or portion thereof, the amount, if any of 
insurance proceeds that are available to make such repairs or restoration and 
the estimated period of time it would take to make such repairs and 
restoration. If the damage by fire or other casualty to the Property has not 
been repaired to the reasonable satisfaction of Purchaser prior to the 
Closing hereunder and requires less than One Hundred Thousand and No/100 
Dollars ($100,000.00) (the "Casualty Threshold") to be expended to repair or 
restore the damaged or destroyed Property or portion thereof, then, provided 
that the aggregate amount of the insurance proceeds to be made available to 
Purchaser and the amount of the reduction in the Purchase Price are 
sufficient, in Purchaser's reasonable judgment, to complete the repair and 
restoration of the Property, this Agreement shall remain in full force and 
effect, and in such event Seller shall assign to Purchaser any and all claims 
for the insurance proceeds of such damage to or destruction of the Property, 
and Purchaser shall take title to the Property with the assignment of such 
proceeds and subject to such damage to or destruction of the Property with a 
reduction of the Purchase Price equal to the amount of any deductible due 
under the terms of any applicable insurance policy. If the amount

                                      13


required to be expended to repair or restore the damaged or destroyed 
Property or portion thereof is in excess of the Casualty Threshold as of the 
Closing Date, Purchaser shall have, as its sole and exclusive remedies: (i) 
the option to terminate this Agreement within five (5) days following notice 
in writing to Purchaser of such casualty, in which event the parties shall 
have no further rights or obligations hereunder (except for Purchaser's 
confidentiality and indemnity obligations set forth in Sections 13, 23 and 
38) and the Earnest Money shall be returned to Purchaser, subject to 
Purchaser's satisfaction of the conditions set forth in Section 39; or (ii) 
if Purchaser does not elect to terminate, this Agreement shall remain in full 
force and effect, and in such event Seller shall assign to Purchaser any and 
all claims for the insurance proceeds of such damage to or destruction of the 
Property, and Purchaser shall take title to the Property with the assignment 
of such proceeds and subject to such damage to or destruction of the Property 
without reduction of the Purchase Price, except for (a) the amount of any 
deductible under the terms of any applicable insurance policy and (b) any 
further amount (not to exceed $100,000.00) which is sufficient to complete 
the repair and restoration of the Property. If Purchaser does not elect to 
terminate within five (5) day period following such notice by Seller, 
Purchaser shall be deemed to have waived all rights to terminate pursuant to 
this provision and this Agreement shall remain in full force and effect. If 
Purchaser does not elect to terminate this Agreement, Purchaser shall have 
the right to adjust the insurance claim if Purchaser elects to waive the 
remainder of the Inspection Period and proceed as if the Inspection Period 
had expired.

    18. CONDEMNATION. Promptly upon obtaining knowledge of the institution of 
the proceedings for the condemnation of any part of the Property, Seller or 
Purchaser will notify the other of the pendency of such proceedings. In the 
event of the condemnation of any portion of the Property or the sale of any 
portion of the Property in lieu of condemnation, then the Purchaser may 
terminate this Agreement by notice in writing to Seller within five (5) days 
following receipt by Purchaser of notice in writing by Seller of such 
condemnation of the Property, in which event the parties shall have no 
further rights or obligations hereunder (except for Purchaser's 
confidentiality and indemnity obligations set forth in Sections 13, 23 and 
38) and the Earnest Money shall be returned to Purchaser, subject to 
Purchaser's satisfaction of the conditions set forth in Section 39. If 
Purchaser does not elect to terminate within said five (5) day period 
following such notice by Seller, Purchaser shall be deemed to have waived all 
rights to terminate pursuant to this provision and this Agreement shall 
remain in full force and effect, and Seller shall assign and turn over to 
Purchaser, and Purchaser shall be entitled to receive and keep, all awards 
for the taking.

    19. THE CLOSING. The closing ("Closing") of this transaction shall take 
place at the offices of the Title Company in Montgomery County, Maryland on 
the Closing Date.

        (a) Seller shall deliver to Purchaser a duly executed and 
acknowledged special warranty deed in substantially the form attached hereto 
as EXHIBIT B and Seller shall deliver to Purchaser a duly executed and 
acknowledged bill of sale and general assignment in substantially the form 
attached hereto as EXHIBIT E.

                                      14


        (b) Purchaser shall pay to the Title Company for the account of the 
Seller (or in the alternative in Purchaser's discretion, directly to Seller 
or an account designated by Seller) the Purchase Price in Cash to The Title 
Company's account, plus or minus applicable prorations determined by the 
Title Company in a manner consistent with this Agreement and approved by 
Seller and Purchaser.

        (c) Seller shall deliver to Purchaser, at Seller's expense, an 
A.L.T.A. owner's title policy issued by the Title Company in the amount of 
the Purchase Price insuring that Purchaser owns fee simple title to the 
Property, subject to no exceptions other than the Permitted Encumbrances. 
Seller shall execute and deliver to the Title Company an affidavit in form 
reasonably acceptable to Seller as to mechanics' liens and parties in 
possession. If Purchaser desires any special endorsements to the coverage 
provided by the Title Policy (including, without limitation, extended ALTA 
coverage), Purchaser shall obtain and pay for these endorsements and 
coverage, and the issuance of the endorsements and/or coverage shall not 
delay the Closing. The issuance of the Title Policy shall be in lieu of any 
express or implied warranty of Seller concerning title to the Property, and 
Purchaser agrees that its only remedy for damages incurred by reason of any 
defect in title shall only be against the Title Company.

        (d) General real estate taxes for the then current year relating to 
the Property shall be prorated as of the Closing Date and Purchaser shall be 
charged with taxes from and including the Closing Date. If Closing shall 
occur before the actual taxes for the then current year are known, the 
apportionment of taxes shall be upon the basis of taxes for the Property for 
the immediately preceding year, provided that, if the taxes for the current 
year are thereafter determined to be more or less than the taxes for the 
preceding year (after any appeal of the assessed valuation thereof is 
concluded), Seller and Purchaser promptly shall adjust the proration of such 
taxes and Seller or Purchaser, as the case may be, shall pay to the other any 
amount required as a result of such adjustment and this covenant shall not 
merge with the deed delivered hereunder, but shall survive Closing. All 
special taxes or assessments actually assessed prior to the Closing Date but 
which are payable in installments shall be prorated as set forth above, and 
those assessed after the Closing Date shall be paid by Purchaser. All real 
estate taxes (other than transfer taxes) imposed due to a change of use or 
ownership of the Property on or after the Closing Date shall be paid by 
Purchaser.

        (e) Seller shall be entitled to all rents (including any percentage 
rent and any accrued tax and operating expense escalations, subject to the 
provisions of subsection (k) hereof), charges, and other revenue of any kind 
attributable to any period under the Tenant Leases to but not including the 
Closing Date. Purchaser shall be entitled to all rents (including any 
percentage rent and any accrued tax and operating expense escalations, 
charges, and other revenue of any kind) attributable to any period under the 
Tenant Leases on and after the Closing Date. Rents and expense escalations or 
other reimbursements due landlord under the Leases collected prior to the 
Closing Date and attributable to both Seller's and Purchaser's period of 
ownership shall be prorated as of the Closing Date (provided that for any 
such proration to occur, Seller must have

                                      15


taken actual physical possession of such sums). Uncollected rents and expense 
escalations or other reimbursements due landlord under the Tenant Leases 
shall not be prorated at the time of Closing, but Purchaser shall make a good 
faith effort to collect the same on Seller's behalf and to tender the same to 
Seller upon receipt, provided that all rents, escalations and other 
reimbursements due landlord under the Tenant Leases collected by Purchaser on 
or after the Closing Date shall first be applied to all amounts, due under 
the Tenant Leases at the time of collection (i.e., current rents and sums due 
Purchaser as the current owner and landlord) with the balance (if any) 
payable to Seller, but only to the extent of amounts delinquent and actually 
due Seller. Seller shall either deliver to Purchaser or Purchaser shall 
receive a credit against the Purchase Price at Closing for all security 
deposits actually transferred to and held by Seller under the Tenant Leases 
in connection with Seller's acquisition of title and/or during Seller's 
period of ownership, but not otherwise. Seller and Purchaser shall execute 
and deliver to the other party the assignment and assumption of leases and 
security deposits in the form attached hereto as EXHIBIT F. The provisions of 
this subsection shall survive Closing hereunder.

        (f) All other income from, and expenses of, the Property, including 
but not limited to operating expenses, maintenance charges, service charges 
and salaries of continuing employees (including all fringe benefits) shall be 
prorated as of the Closing Date (except for these utility charges and 
operating expenses payable by tenants in accordance with the Tenant Leases). 
The provisions of this subsection shall survive Closing.

        (g) Purchaser shall pay the sales tax, if any, resulting from the 
sale of the Personal Property.

        (h) As to any deposits delivered to Purchaser by Seller pursuant to 
the subsection (e) above, Purchaser shall deliver to Seller an original and 
one copy each of written notices signed by Purchaser addressed to each tenant 
under the Tenant Leases notifying such tenant of the acquisition of the 
Property by Purchaser in substantially the form attached hereto as EXHIBIT G, 
acknowledging that Purchaser has received and is responsible for the security 
deposit of said tenant, specifying the exact dollar amount of said deposit, 
and containing appropriate instructions relating to the payment of future 
rentals and the giving of future notices.

        (i) Seller shall deliver to Purchaser all keys to all locks on the 
Property within Seller's possession. To the extent within Seller's 
possession, Seller shall deliver all documents pertaining to tenants of the 
Property including, but not limited to, all applications, correspondence and 
credit reports relating to each tenant.

        (j) To the extent within Seller's possession, Seller shall deliver to 
Purchaser originals of all the executed Tenant Leases, and if not available, 
then copies.

                                      16


        (k) If at any time following the Closing Date the amount of an item 
listed in any subsection hereof shall prove to be incorrect, the party in 
whose favor the error was made shall promptly pay to the other party the sum 
necessary to correct such error upon receipt of proof of such error, provided 
that such proof is delivered to the party from whom payment is requested on 
or before one (1) year after Closing.

        (l) The present insurance coverage and public utility service on the 
Property shall be terminated as of the Closing Date and there shall be no 
proration of insurance premiums or public utility bills.

        (m) Any escrow fee charged by the Title Company shall be paid 
one-half (1/2) by Seller and one-half (1/2) by Purchaser. Purchaser shall pay 
for the cost of any audits or inspection. Title policy premiums shall be paid 
as set forth in item (c) of this Section 19. All transfer taxes, recordation 
taxes or other charges for recording the Deed shall be shared equally by 
Purchaser and Seller. Each party shall be responsible for the payment of its 
own attorneys' fees incurred in connection with the transaction which is the 
subject to this Agreement.

        (n) Possession of the Property shall be given to Purchaser, subject 
to the Permitted Encumbrances.

        (o) Seller shall deliver to Purchaser a "non-foreign affidavit" 
acknowledging that Seller is not a "foreign person" within the meaning of 
Section 1445 of the Internal Revenue Code.

        (p) Purchaser and Seller shall deliver to each other such documentary 
and other evidence as may be reasonably required by them or the Title Company 
evidencing the status and capacity of Purchaser or Seller and the authority 
of the person or persons who are executing the various documents on behalf of 
Purchaser or Seller in connection with this Agreement.

        (q) Purchaser shall deliver the Purchaser's Affidavit set forth as 
EXHIBIT C attached hereto.

    20. REMEDIES. IN THE EVENT THAT SELLER SHALL BREACH ANY OF ITS OBLIGATIONS
HEREUNDER OR SHALL FAIL TO CONSUMMATE THIS AGREEMENT FOR ANY REASON, EXCEPT
PURCHASER'S DEFAULT OR A TERMINATION OF THIS AGREEMENT BY PURCHASER OR SELLER
PURSUANT TO A RIGHT TO DO SO UNDER THE PROVISIONS HEREOF, PURCHASER MAY, AS ITS
SOLE AND EXCLUSIVE REMEDIES, AT LAW OR IN EQUITY, EITHER (A) TERMINATE THIS
AGREEMENT AND RECEIVE A REFUND OF THE EARNEST MONEY UPON SATISFACTION OF THE
CONDITIONS SET FORTH IN SECTION 39 OR (B) PROVIDED THAT (i) PURCHASER IS NOT IN
DEFAULT IN ANY OF ITS OBLIGATIONS

                                      17


HEREUNDER, (ii) PURCHASER IS READY, WILLING AND ABLE TO PERFORM ITS 
OBLIGATIONS HEREUNDER, (iii) PURCHASER TENDERS TO THE TITLE COMPANY THE FULL 
AMOUNT OF THE PURCHASE PRICE IN IMMEDIATELY AVAILABLE LOCAL FUNDS, (iv) 
PURCHASER SHALL HAVE GIVEN NOTICE TO SELLER THAT PURCHASER HAS SO TENDERED 
THE PURCHASE PRICE AND (v) SELLER FAILS, PRIOR TO THE CLOSE OF BUSINESS ON 
THE FIFTH (5TH) BUSINESS DAY FOLLOWING RECEIPT BY SELLER OF SUCH NOTICE FROM 
PURCHASER TO TENDER PERFORMANCE OF SELLER'S OBLIGATIONS HEREUNDER THEN IN 
SUCH EVENT, PURCHASER SHALL HAVE THE RIGHT TO ENFORCE SPECIFIC PERFORMANCE OF 
THIS AGREEMENT AGAINST SELLER, THEREBY WAIVING ALL OTHER CLAIMS AGAINST 
SELLER FOR NON-PERFORMANCE OF ITS OBLIGATIONS HEREUNDER; PROVIDED FURTHER 
THAT ANY SUCH SUIT FOR SPECIFIC PERFORMANCE MUST BE BROUGHT BY PURCHASER 
WITHIN THIRTY (30) DAYS AFTER RECEIPT BY SELLER OF SUCH NOTICE OR BE FOREVER 
BARRED.

    IF PURCHASER FAILS TO COMPLETE THE PURCHASE OF THE PROPERTY AS PROVIDED 
IN THIS AGREEMENT FOR ANY REASON OTHER THAN SELLER'S DEFAULT (AS EVIDENCED BY 
WRITTEN NOTICE FROM PURCHASER TO SELLER AND ESCROW AGENT) AND/OR THE 
NONSATISFACTION OF THE CONDITIONS TO PURCHASER'S PERFORMANCE SET FORTH IN 
SECTION 8 ABOVE, SELLER SHALL BE RELEASED FROM ALL OF ITS OBLIGATIONS UNDER 
THIS AGREEMENT, ESCROW AGENT SHALL IMMEDIATELY DELIVER, DESPITE ANY 
INSTRUCTIONS TO THE CONTRARY, THE EARNEST MONEY TO SELLER (IF IT HAS NOT DONE 
SO PREVIOUSLY), AND SELLER SHALL BE ENTITLED TO RETAIN THE EARNEST MONEY AS 
FULL COMPENSATION AND LIQUIDATED DAMAGES, SELLER SHALL INDEMNIFY ESCROW AGENT 
FOR ANY LIABILITY, COSTS AND EXPENSES BY REASON OF ESCROW AGENT'S GOOD FAITH 
COMPLIANCE WITH THIS PARAGRAPH, THE PARTIES EXPRESSLY AGREE THAT THE AMOUNT 
OF THE EARNEST MONEY IS A REASONABLE ESTIMATE OF THE EXTENT TO WHICH SELLER 
WOULD BE DAMAGED BY PURCHASER'S FAILURE TO COMPLETE THIS PURCHASE, IN LIGHT 
OF THE DIFFICULTY THE PARTIES WOULD HAVE IN DETERMINING SELLER'S ACTUAL 
DAMAGES AS A RESULT OF PURCHASER'S FAILING TO COMPLETE THE PURCHASE. SELLER'S 
RETENTION OF THE EARNEST MONEY AS LIQUIDATED DAMAGES SHALL BE SELLER'S 
EXCLUSIVE REMEDY FOR DAMAGES BY REASON OF PURCHASER'S FAILURE TO COMPLETE THE 
PURCHASE OF THE PROPERTY UNDER THIS AGREEMENT. IF PURCHASER ATTEMPTS TO 
INTERFERE WITH THE RELEASE OF THE EARNEST MONEY, OR IF PURCHASER COMMENCES 
ANY ACTION AGAINST SELLER OR THE PROPERTY ARISING OUT OF THIS AGREEMENT, THEN 
SELLER SHALL NOT BE LIMITED IN THE AMOUNT OF DAMAGES IT MAY RECOVER FROM 
PURCHASER.

                                      18


    THE PARTIES AND EACH OF THEM MUTUALLY, EXPRESSLY. KNOWINGLY, AND 
INTENTIONALLY, WAIVE ALL RIGHTS AND PROTECTIONS UNDER APPLICABLE LAW, EXCEPT 
FOR THOSE EXPRESSLY RESERVED HEREIN.



        -----------------                       --------------------
        Seller's Initials                       Purchaser's Initials

    21. Intentionally Omitted.

    22. FURTHER AGREEMENTS BY PURCHASER. Purchaser agrees to indemnify and 
hold Seller harmless from and against, and to reimburse Seller with respect 
to, any and all claims, demands, causes of action, losses, damages, 
liabilities, costs, and expenses (including attorneys' fees and court costs) 
asserted against or incurred by Seller relating to the period of time as of 
and subsequent to (but not prior to) the Closing by reason of or arising out 
of the ownership, physical condition, maintenance and/or operation of the 
Property subsequent to (but not prior to) the Closing. This provision shall 
expressly survive Closing. 

    23. REAL ESTATE COMMISSIONS. Seller agrees to pay upon the Closing of the 
transaction contemplated hereby, and not otherwise, the agreed amount due to 
Agent pursuant to a separate agreement (the "Commission") (to be payable out 
of the proceeds of the sale received by Seller at Closing). The Commission to 
the Agent shall in no event be payable unless and until the transaction 
contemplated hereby is closed in accordance with this Agreement; if such 
transaction is not closed for any reason, including, without limitation, 
failure of title or default by Seller or Purchaser or termination of this 
Agreement, then the Commission will not be deemed to have been earned and 
shall not be clue or payable. Each party hereto represents to the other that 
except for the Agent, it has not authorized any broker or finder to act on 
its behalf in connection with the sale and purchase hereunder and that such 
party has not dealt with any broker or finder purporting to act on behalf of 
any other party. Each party hereto agrees to indemnify and hold harmless the 
other party from and against any and all, losses, liens, claims, judgments, 
liabilities, costs, expenses or damages (including reasonable attorneys' fees 
and court costs) of any kind or character arising out of or resulting from 
any agreement, arrangement or understanding alleged to have been made by such 
party or on its behalf with any broker or finder in connection with this 
Agreement or the transaction contemplated hereby. Notwithstanding anything to 
the contrary contained herein, this Section shall survive the Closing or any 
termination of this Agreement.

    24. NOTICE. Any notice or communication required or permitted hereunder 
shall be given in writing, sent by (a) personal delivery, (b) overnight 
delivery service by Federal Express or other reputable delivery service with 
proof of delivery, (c) United States, mail, postage prepaid, registered or 
certified mail, (d) telecopy (provided that such telecopy is confirmed by 
overnight delivery service or by mail in the manner previously described) 
addressed as set forth in Section 1 hereof, or to such other address or to 
the attention of such other persons as hereafter

                                      19


shall be designated in writing by the applicable party sent in 
accordance herewith. Any such notice or communication shall be deemed to 
have been given either at the time of personal delivery or, in the case 
of delivery service or mail, as of the date of first attempted delivery 
at the address and in the manner provided herein, or in the case of 
telecopy upon receipt.

     25. ASSIGNMENT. Purchaser shall not have the right to assign its 
interest in this Agreement without obtaining the prior written consent 
of Seller, which consent shall not be unreasonably withheld; provided, 
however, that Purchaser may, without Seller's consent, assign this 
Agreement to any entity controlled by, under common control with or 
controlling Purchaser, or to Purchaser's lender. Purchaser hereby agrees 
that any assignment by Purchaser in contravention of this provision 
shall be void and shall not relieve Purchaser of its obligations and 
liabilities hereunder.

    26. NO REPRESENTATIONS. EXCEPT AS EXPRESSLY SET FORTH HEREIN OR IN 
ANY OF THE INSTRUMENTS ATTACHED AS EXHIBITS HERETO, SELLER MAKES NO 
WARRANTIES OR REPRESENTATIONS OF ANY KIND OR CHARACTER, EXPRESS OR 
IMPLIED, WITH RESPECT TO THE PROPERTY, ITS PHYSICAL CONDITION, INCOME TO 
BE DERIVED THEREFROM OR EXPENSES TO BE INCURRED WITH RESPECT THERETO, OR 
WITH RESPECT TO INFORMATION OR DOCUMENTS PREVIOUSLY FURNISHED TO 
PURCHASER OR FURNISHED TO PURCHASER PURSUANT TO THIS AGREEMENT, OR WITH 
RESPECT TO SELLER'S OBLIGATIONS OR ANY OTHER MATTER OR THING RELATING TO 
OR AFFECTING THE SAME, AND THERE ARE NO ORAL AGREEMENTS, WARRANTIES OR 
REPRESENTATIONS COLLATERAL TO OR AFFECTING THE PROPERTY EXCEPT AS MAY 
OTHERWISE BE EXPRESSLY SET FORTH HEREIN. ANY SUIT BY PURCHASER FOR ANY 
BREACH BY SELLER OF ANY REPRESENTATION, WARRANTY OR COVENANT CONTAINED 
HEREIN MUST BE FILED ON OR BEFORE ONE (1) YEAR AFTER THE CLOSING DATE 
OR SHALL BE FOREVER BARRED (THE "LIMITATION DATE"). NOTWITHSTANDING 
ANYTHING CONTAINED HEREIN TO THE CONTRARY, THIS SECTION SHALL SURVIVE 
THE CLOSING OR ANY TERMINATION OF THIS AGREEMENT. THE PARTIES AND EACH 
OF THEM MUTUALLY, EXPRESSLY, KNOWINGLY, AND INTENTIONALLY, WAIVE ALL 
RIGHTS AND PROTECTIONS UNDER APPLICABLE LAW EXCEPT FOR THOSE EXPRESSLY 
RESERVED HEREIN.

    27. ATTORNEYS' FEES AND LEGAL EXPENSES. Should either party hereto 
institute any action or proceeding in court to enforce any provision 
hereof or for damages by reason of any alleged breach of any provision 
of this Agreement or for any other judicial remedy, the prevailing party 
shall be entitled to receive from the losing party all reasonable 
attorneys' fees and all court costs in connection with said proceedings.

    28. INTENTIONALLY OMITTED.

                                       20


     29. SECTION HEADINGS. The Section headings contained in this 
Agreement are for convenience only and shall in no way enlarge or limit 
the scope or meaning of the various and several sections hereof.

     30. ENTIRE AGREEMENT. This Agreement embodies the entire agreement 
between the parties hereto and supersedes any prior understandings or 
written or oral agreements between the parties concerning the Property. 
This Agreement cannot be varied, modified, amended, altered or 
terminated except by the written agreement of the parties.

     31. APPLICABILITY. The terms and provisions of this Agreement shall 
be binding upon and inure to the benefit of the parties hereto and their 
respective permitted successors and assigns, except as expressly set 
forth herein.

     32. TIME. Time is of the essence in the performance of Purchaser's 
obligations under this Agreement.

     33. GENDER AND NUMBER. Within this Agreement, words of any gender 
shall be held and construed to include any other gender, and words in 
the singular number shall be held and construed to include the plural, 
unless the context otherwise requires.

     34. REPORTING OF FOREIGN INVESTMENT. Seller and Purchaser agree to 
comply with any and all reporting requirements applicable to the 
transaction which is the subject of this Agreement which are set forth 
in any law, including, but not limited to, The International Investment 
Survey Act of 1976, The Agricultural Foreign Investment Disclosure Act 
of 1978, The Foreign Investment in Real Property Tax Act of 1980 and the 
Tax Reform Act of 1984, and further agree upon request of one party to 
furnish the other party with evidence of such compliance.

     35. EXHIBITS. All exhibits described herein and attached hereto are 
fully incorporated into this Agreement by this reference for all 
purposes.

     36. EXECUTION. This Agreement is executed in multiple counterparts, 
each of which shall be deemed to be an original.

     37. APPLICABLE LAW. All questions with respect to the construction 
of this Agreement and the rights and liabilities of the parties under 
this Agreement shall be determined in accordance with the laws of the 
State of Maryland, without regard to the application of choice of law 
principles, except to the extent that such laws are superseded by 
federal law.

     38. CONFIDENTIALITY. Seller and Purchaser hereby covenant and agree 
that, at all times after the date of execution hereof and prior to the 
Closing, unless consented to in writing by the other party, no press 
release or other public disclosure concerning this transaction shall be 
made,

                                       21


and each party agrees to use best efforts to prevent public disclosure 
of this transaction, other than (a) to directors and officers of the 
parties, and employees, agents, lenders, investment advisors, partners, 
consultants, representatives and affiliates of the parties who are 
involved in the ordinary course of business with this transaction, and 
each party shall use their best efforts to instruct all of such persons 
to comply with the non-disclosure provisions hereof, (b) in response to 
lawful process or subpoena or other valid or enforceable order of a 
court of competent jurisdiction; (c) in any filings with governmental 
authorities required by reason of the transactions provided for herein, 
and (d) in the exercise of any remedy hereunder.

     39. REFUND OF EARNEST MONEY. Notwithstanding anything contained in 
this Agreement to the contrary, as a condition precedent to Purchaser's 
entitlement to the Earnest Money, Purchaser shall (a) execute and 
deliver to Seller the Release in the form attached hereto as EXHIBIT D 
and (b) deliver to Seller originals of any and all inspection reports 
from third parties concerning the physical condition of the Property 
which were obtained by Purchaser in connection with this Agreement.

     40. EXPIRATION. The execution of this Agreement by Purchaser and 
the delivery hereof to Seller shall constitute an offer which shall be 
automatically revoked, withdrawn and terminated unless Seller accepts 
same by executing this Agreement and delivering one fully executed copy 
thereof to Purchaser prior to five o'clock p.m. Houston, Texas time on 
the tenth (1Oth) day after receipt thereof by Seller.

     41. GENERAL ESCROW PROVISIONS.

          (a) ESCROW INSTRUCTIONS. This Agreement when signed by 
     Purchaser and Seller shall also constitute escrow instructions to Escrow 
     Agent, as escrow holder.

          (b) OPENING OF ESCROW. When both (i) this Agreement, fully 
     signed, or in signed counterparts, and (ii) the Initial Earnest Money 
     are delivered to Escrow Agent, Escrow shall be deemed open, and Escrow 
     Agent shall immediately notify Purchaser and Seller by telephone and in 
     writing of the date of opening of Escrow.

          (c) GENERAL PROVISIONS. If any requirements relating to the 
     duties or obligations of the Escrow Agent are unacceptable to the Escrow 
     Agent, or if the Escrow Agent requires additional instructions, the 
     parties agree to make such additional instructions as Purchaser and 
     Seller shall mutually approve and which do not materially alter the 
     terms of this Agreement. Any supplemental instructions shall be signed 
     only as an accommodation to Escrow Agent and shall not be deemed to 
     modify or amend the rights of Purchaser and Seller, as between 
     Purchaser and Seller, unless these supplemental instructions expressly 
     so provide.

                                       22


         (d) RECORDATION AND DELIVERY OF DOCUMENTS. When Purchaser and 
     Seller have satisfied their respective closing obligations under Section 
     19, and each of the conditions under Sections 8 and 9 have either been 
     satisfied or waived, Title Company shall cause the Deed to be recorded 
     in the Land Records of Montgomery County, in a manner so that the Title 
     Company is in a position to issue the Title Policy as provided in 
     Section 19(c). Immediately after the Closing, Title Company shall 
     deliver to Seller and to Purchaser all documents and funds to which each 
     is entitled. After recordation, the Deed shall be returned to Purchaser. 
     Immediately after recordation, Title Company shall deliver a copy of all 
     documents recorded through escrow bearing the Recorder's identifying 
     information to Purchaser and Seller.
     
         (e) PERFORMANCE BY ESCROW HOLDER. Escrow Agent is to be concerned 
     only with those paragraphs under this Agreement where Escrow Agent is 
     given instructions to perform certain acts or with those paragraphs 
     where escrow holders generally and reasonably would be expected to act.
     
     42. JOINT AND SEVERAL LIABILITY. If Purchaser consists of more than one
person or entity, then the obligations of Purchaser under this Agreement shall
be the joint and several obligations of said persons and/or entities.

     43. RULE OF CONSTRUCTION. Purchaser and Seller have each read and 
fully understand the terms of this Agreement, and each has had the 
opportunity to have this Agreement reviewed by its own counsel. The rule 
of construction providing that ambiguities in an agreement shall be 
construed against the party drafting the same shall not apply. If any 
time limit stated herein would end on a non-business day (i.e., a 
Saturday, Sunday or Federal holiday), such time limit shall be extended 
so as to end on the next business day.

    44. ARBITRATION OF DISPUTES. ANY AND ALL CONTROVERSIES ARISING OUT 
OF OR RELATING TO THIS AGREEMENT, OR THE BREACH THEREOF, SHALL BE 
SETTLED BY ARBITRATION IN ACCORDANCE WITH THE MARYLAND ARBITRATION ACT 
(THE CODE OF MARYLAND, COURTS AND JUDICIAL PROCEEDINGS ARTICLE, TITLE 3, 
SUBTITLE 2, HEREINAFTER "THE ACT") AND JUDGMENT UPON THE AWARD MAY BE 
ENTERED IN THE CIRCUIT COURT OF MARYLAND FOR MONTGOMERY COUNTY, OR OTHER 
MARYLAND COURT HAVING JURISDICTION THEREOF (THE "COURT"). UPON THE 
REQUEST OF ONE OF THE PARTIES, THE PARTIES AGREE TO STIPULATE TO A 
MUTUALLY ACCEPTABLE ARBITRATOR OR ARBITRATORS WITHIN THIRTY (30) DAYS OF 
THE REQUEST. AS PART OF THE STIPULATION, THE PARTIES SHALL BE BOUND BY 
THE DECISION OF THE ARBITRATOR(S) AND THE PARTIES WAIVE ALL RIGHT OF 
APPEAL. IN THE EVENT THAT THE PARTIES ARE UNABLE TO REACH AGREEMENT 
CONCERNING THE ARBITRATOR(S), ONE OR MORE ARBITRATORS WILL BE APPOINTED 
BY THE COURT PURSUANT TO SECTION 3-201 OF THE ACT. IN ANY EVENT, THE 
COST OF THE

                                       23


ARBITRATOR(S) SHALL BE DIVIDED EQUALLY BETWEEN THE PARTIES.

NOTICE: BY INITIALING IN THE SPACE BELOW YOU ARE AGREEING TO HAVE ANY 
DISPUTE ARISING OUT OF THIS AGREEMENT DECIDED BY NEUTRAL ARBITRATION AS 
PROVIDED BY MARYLAND LAW AND YOU ARE GIVING UP ANY RIGHTS YOU MIGHT 
POSSESS TO HAVE THE DISPUTE LITIGATED IN A COURT OR JURY TRIAL. BY 
INITIALING IN THE SPACE BELOW YOU ARE GIVING UP YOUR JUDICIAL RIGHTS TO 
DISCOVERY AND APPEAL. IF YOU REFUSE TO SUBMIT TO ARBITRATION AFTER 
AGREEING TO THIS PROVISION, YOU MAY BE COMPELLED TO ARBITRATE UNDER THE 
AUTHORITY OF SECTION 3-207 OF THE ACT. YOUR AGREEMENT TO THIS 
ARBITRATION PROVISION IS VOLUNTARY.

     WE HAVE READ AND UNDERSTAND THE FOREGOING AND AGREE TO SUBMIT 
DISPUTES ARISING OUT OF THE MATTERS INCLUDED IN THE "ARBITRATION OF 
DISPUTES" PROVISION TO NEUTRAL ARBITRATION.

                                  /s/ G
      -----------------           --------------------
      Seller's Initials           Purchaser's Initials

     45. REGARDING BROKERS. As provided in Section 23 hereof, Seller 
shall pay a real estate brokerage commission to The Carey Winston 
Company and Smithy Braedon/ONCOR Realty, to be divided equally between 
them. Purchaser and Seller hereby acknowledge their understanding of the 
fact that The Carey Winston Company is acting as Seller's broker ONLY 
and that Smithy Braedon/ONCOR Realty is acting as Purchaser's broker, 
ONLY.

     46. AUDIT RIGHTS. At Purchaser's request at any time from and after 
the date hereof until the date that is one (1) year after the Closing 
Date, Seller shall, at Purchaser's expense, provide to Purchaser's 
designated independent auditor access to the books and records of the 
Property, regarding the period for which Purchaser is required to have 
audited financial statements prepared with respect to the Property from 
January 1, 1996 through the Closing Date as may be required in order for 
Purchaser to qualify as a "real estate investment trust" under the 
applicable provisions of the Internal Revenue Code or to comply with the 
disclosure and reporting requirements of the Securities and Exchange 
Commission, to the extent that such books, records and related 
information are in Seller's possession or control and relate to the 
period during which Seller held title to the Property.

                                       24


     IN WITNESS WHEREOF, this Agreement is executed in multiple originals by
Seller and Purchaser as of the date first above written.

                                    SELLER:

                                    THE VARIABLE ANNUITY LIFE
                                    INSURANCE COMPANY, a Texas corporation

                                    By:    /s/ Lawrence Kupstas
                                           --------------------------------
                                    Name:  LAWRENCE KUPSTAS
                                           --------------------------------
                                    Title: REAL ESTATE INVESTMENT OFFICER
                                           --------------------------------

                                    PURCHASER:

                                    ALEXANDRIA REAL ESTATE EQUITIES, INC.,
                                    a Maryland Corporation 

                                    By:   /s/ Alan D. Gold
                                          --------------------------------
                                    Name:  ALAN D. GOLD
                                          --------------------------------
                                    Title: PRESIDENT
                                          --------------------------------

                                       25


    An original fully executed copy of this Agreement, together with the
Initial Earnest Money, has been received by the Escrow Agent this the 
___ day of _________________, 1997 and by the execution hereof the Escrow 
Agent hereby covenants and agrees to be bound by the terms of this Agreement.

                                     WATT, TIEDER & HOFFAR, L.L.P.

                                     By:
                                        ---------------------------------
                                        Wayne G. Tatusko, Partner

                                       26


                               LIST OF EXHIBITS

           EXHIBIT A Legal Description

           EXHIBIT B Special Warranty Deed

           EXHIBIT C Purchaser's Affidavit

           EXHIBIT D Release

           EXHIBIT E Bill of Sale and General Assignment

           EXHIBIT F Assignment and Assumption of Leases and Security Deposits

           EXHIBIT G Tenant Notice

                                       27


                                      EXHIBIT A

                                  LEGAL DESCRIPTION

Parcel X-6 in a subdivision known as "Parcel X-6, PHEASANT RUN" as per plat (the
"Record Plat") thereof recorded in Plat Book 169 at Plat 19055 among the Land
Records of Montgomery County, Maryland.



                                      EXHIBIT B

Recording requested by and
when recorded mail to and
mail tax statements to:

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

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

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

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

                                SPECIAL WARRANTY DEED

    THIS SPECIAL WARRANTY DEED is made this ___ day of 
_________________, 199_, by THE VARIABLE ANNUALLY LIFE INSURANCE 
COMPANY, a Texas corporation (the "Grantor") and ALEXANDRIA REAL ESTATE 
EQUITIES, INC., a Maryland corporation (the "Grantee").

                                   WITNESSETH:

    In consideration of Ten Dollars ($l0.00) and other good and 
valuable consideration, Grantor does hereby grant and convey unto 
Grantee in fee simple all that property described on EXHIBIT A attached 
hereto and incorporated herein by this reference, together with the 
buildings and improvements located thereon, and known generally as 940 
Clopper Road in Gaithersburg, Maryland (the "Property").

    This conveyance is made and accepted subject to (a) the matters 
herein stated, (b) the matters described on EXHIBIT B attached hereto, 
to the full extent same are valid and pertain to the Property, (c) any 
and all matters on the ground that a true and correct survey would 
reveal and (d) real and personal property taxes and general or special 
assessments against the Property, a lien not yet delinquent.

    TO HAVE AND TO HOLD said Property, together with each and every 
title, right, privilege, appurtenance and advantage thereunto belonging, 
or in anywise appertaining, unto and for the proper use only, benefit 
and behoof forever of the Grantee, its successors and assigns, in fee 
simple.

    And the Grantor does hereby covenant to warrant specially the Property
hereby conveyed, and to execute such further assurances of the Property as may
be requisite.



     IN WITNESS WHEREOF, the undersigned hereby executes this Special Warranty 
Deed as of the ___ day of _______________, 1997.

                              THE VARIABLE ANNUITY LIFE INSURANCE
                              COMPANY, a Texas corporation

                              By:
                                  ---------------------------------
                              Name (typed):
                                           ------------------------
                              Title:
                                    -------------------------------

    The undersigned hereby certifies that this SPECIAL WARRANTY DEED was 
prepared by the undersigned, who is an attorney duly admitted to 
practice law before the Court of Appeals of Maryland.

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

STATE OF MARYLAND )
                  )
COUNTY OF         )

     On this ____ day of ____________, 1997, before me,_____________, the 
undersigned officer, personally appeared ____________________, who acknowledged
himself to be the _____________ of The Variable Annuity Life Insurance Company,
a Texas corporation, and that he, as such ______________, being authorized so to
do, executed the foregoing instrument for the purposes therein contained, by 
signing the name of the corporation by himself as __________________________.

     IN WITNESS WHEREOF, I hereunto set my hand and official seal.

                                       -----------------------------------
                                       Notary Public

[Notarial Seal]                        My commission expires:
                                                             --------------


EXHIBIT A - Legal Description
Exhibit B - Permitted Encumbrances

     Pursuant to the provisions of Section 3.501 of Subtitle 5, Real 
Property Article, Annotated Code of Maryland (1988 Repl. Vol.) the following
additional information is provided:

     (a) The address of the Grantee is: Alexandria Real Estate Equities, Inc.
                                        251 South Lake Avenue, Suite 700
                                        Pasadena, California 91101

     (b) The address of the Grantor is: American General Realty Advisors, Inc.
                                        2929 Allen Parkway, 40th Floor
                                        Houston, Texas 77019
                                        Attention: Mr. J. Brady Wilkins

     (c) The name and address of the title insurer insuring this instrument is:



     (d) The street address of the Property is:  940 Clopper Road
                                                 Gaithersburg, Maryland

     (e) The parcel identifier number is:



     (f) The record legal description of the Property is shown as Exhibit A of 
         this Deed.


                                     EXHIBIT C

                         PURCHASER'S AFFIDAVIT AND AGREEMENT

          This day personally came and appeared before me, the undersigned 
authority, _________________________, the _________________ of ALEXANDRIA 
REAL ESTATE EQUITIES, INC. ("Purchaser"), who is knowledgeable of the facts 
stated herein who, on being duly sworn, stated under oath as follows that:

          1. Pursuant to Section 13 of that certain Purchase and Sale 
     Agreement ("Agreement") dated __________, 1997, by and between Purchaser 
     and THE VARIABLE ANNUITY LIFE INSURANCE COMPANY ("Seller"), Purchaser 
     has had full access to and has (to Purchaser's satisfaction) exercised 
     its option to inspect and evaluate for potential purchase that certain 
     property known as 940 Clopper Road, Gaithersburg, Montgomery County, 
     Maryland, and more particularly described on EXHIBIT A attached hereto 
     ("Property").

         2. Purchaser and experts of Purchaser's choice have had full access 
     to and have (to Purchaser's satisfaction) (i) physically inspected the 
     Property, (ii) analyzed the present, past and Purchaser's projected use 
     of the Property, (iii) determined the fair market value of the Property 
     in its "AS IS" condition as of the closing date and (iv) independently 
     verified all material documents and information provided to Purchaser by 
     Seller and Seller's Agents (as hereinafter defined).
     
         3. Purchaser has not relied upon and is not relying upon any 
     document, representation or information provided to Purchaser by Seller 
     (except as set forth in the Agreement) or Seller's Agents (as defined in 
     Section 6 below).
          
         4. There are no verbal promises or verbal representations which 
     have been made by Seller or Seller's Agents nor relied upon by Purchaser 
     in connection with the Property or the Agreement. There are no 
     underperformed written promises by Seller or Seller's Agents in 
     connection with the Property or the Agreement except as follows:

                      ___________________________________
                      ___________________________________
                      ___________________________________
                      ___________________________________

         5. The Property inspection reports attached hereto as EXHIBIT B were 
     prepared at Purchaser's request for Purchaser's benefit and constitute 
     all reports of such type which were obtained by Purchaser in connection 
     with Purchaser's evaluation and decision to purchase the Property; and 
     said reports are the primary source of information
     


     relied upon by Purchaser in making Purchaser's decision to purchase the 
     Property and Purchaser has not relied upon Seller's information or 
     reports.
     
              6. Purchaser hereby releases Seller from and waives any and all 
     causes of action, claims, liabilities, damages or injury arising from, 
     connected with or otherwise caused by: (a) statements, opinions or 
     information obtained from Seller's brokers, contractors, property 
     managers or similar individuals or entities engaged by Seller ("Seller's 
     Agents") related to or involving the Property or (b) information 
     withheld by Seller's Agents unless withheld at the express direction of 
     Seller and related to or involving the Property; or (c) environmental 
     contamination existing in, at or under the Property, including but not 
     limited to all CERCLA (Comprehensive Environmental Response, 
     Compensation, and Liability Act of 1980 as amended) based or related 
     claims, liabilities or damages or environmental claims or causes of 
     action arising from any other federal or state based statutory or 
     regulatory cause of action. Seller's agents include, but are not limited 
     to, Seller's listing broker, The Carey Winston Company, and any other 
     agent or representative of Seller who discussed the Property with or 
     provided information to Purchaser or Purchaser's representatives.
     

                                ALEXANDRIA REAL ESTATE EQUITIES, INC.

                                By:
                                   ----------------------------------
                                Name:
                                     --------------------------------
                                Title:
                                      -------------------------------

     Sworn to and subscribed to before me by __________________________, the
_____________________ of ALEXANDRIA REAL ESTATE EQUITIES, INC., this ___ day of
________________, 1997.

                                -------------------------------------
                                Notary Public
                                State of
                                        -----------------------------



                                    EXHIBIT D

                                     RELEASE

    This Release ("Release") is entered into this day of ______________, 
1997, between THE VARIABLE ANNUITY LIFE INSURANCE COMPANY, as "Seller" and 
ALEXANDRIA REAL ESTATE EQUITIES, INC., as "Purchaser."

                                    RECITALS

    A. Seller and Purchaser entered into that certain Purchase and Sale 
Agreement (the "Agreement) dates effective ________________, 1997, 
provided for the purchase and sale of the Property situated in 
Gaithersburg, Maryland.

    B. Purchaser has terminated the Agreement and is entitled to a 
refund of the Initial Earnest Money. Under Section 39 of the Agreement, 
Purchaser must execute and deliver to Seller this Release.

    NOW, THEREFORE, in consideration of the premises and other good and 
valuable consideration, the receipt and sufficiency of which are hereby 
acknowledged, Seller and Purchaser hereby agree as follows:

1.  Seller and Purchaser hereby ratify and confirm the above recitals. All
    defined terms used in this Release shall have the same meanings assigned
    them in the Agreement.

2.  Purchaser hereby releases and discharges Seller, its agents and contractors,
    from any and all claims, liabilities and expenses (including reasonable 
    attorney's fees) in connection with the Agreement, and does further ratify 
    and confirm that Purchaser has no rights in and to the Property.

3.  Seller does hereby release and discharge Purchaser, its agents and 
    contractors, from any and all claims, liabilities and expenses 
    (including reasonable attorney's fees) in connection with the Agreement.

4.  Seller and Purchaser hereby instruct the Escrow Agent to deliver to 
    Purchaser the Initial Earnest Money.

5.  This Release does not purport to release the matters set forth below, and 
    Seller and Purchaser hereby reserve all rights and remedies relating to:

    (a) any breach by Purchaser under Section 38 of the Agreement;


    
    (b) the indemnity made by Purchaser in Section 13 of the Agreement; and

    (c) the joint indemnity made in Section 23 of the Agreement.

6.  Seller and Purchaser hereby represent and warrant to the other that each 
    has the power and authority to enter into this Release and that each 
    party is the owner and holder of all claims and causes of action purported
    to be released hereunder. 

                                    SELLER

                                    THE VARIABLE ANNUITY LIFE INSURANCE COMPANY

                                    By:  
                                       --------------------------------------
                                    Name:
                                          -----------------------------------
                                    Title:
                                          -----------------------------------

                                    PURCHASER:

                                    ALEXANDRIA REAL ESTATE EQUITIES, INC.

                                    By:  
                                       --------------------------------------
                                    Name:
                                          -----------------------------------
                                    Title:
                                          -----------------------------------

                                       35


                                    EXHIBIT E

                      BILL OF SALE AND GENERAL ASSIGNMENT

     Concurrently with the execution and delivery hereof, THE VARIABLE 
ANNUITY LIFE INSURANCE COMPANY ("Assignor") is conveying to ALEXANDRIA 
REAL ESTATE EQUITIES, INC. ("Assignee") by Special Warranty Deed, that 
certain tract of land together with the improvements thereon 
("Property") lying and being situated in Montgomery County, Maryland, 
and being more particularly described on EXHIBIT A attached hereto and 
made a part hereof for all purposes.

     It is the desire of Assignor to hereby ASSIGN, TRANSFER and CONVEY 
to Assignee all fixtures, fittings, appliances, apparatus equipment, 
machinery and other items of personal property, affixed or attached to, 
or placed or situated upon, the Property, except those not owned by 
Assignor, and any and all other incidental rights and appurtenances 
relating thereto as more fully described below (such properties being 
collectively called the "Assigned Properties").

     NOW, THEREFORE, in consideration of the receipt of Ten Dollars ($10.00) 
and other good and valuable consideration in hand paid by Assignee to 
Assignor, the receipt and sufficiency of which are hereby acknowledged and 
confessed by Assignor, Assignor does hereby ASSIGN, TRANSFER, SET OVER and 
DELIVER to Assignee, its successors and assigns, all of the Assigned 
Properties, without warranty whether statutory, express or implied, 
including, without limitation, the following:

     1. All equipment, furniture, building supplies, appliances, 
        fixtures and all other personal property of every kind and 
        character, if any, owned by Assignor and located in or on the 
        Property;

     2. All of Assignor's interest, if any, in and to all use, 
        occupancy, building and operating permits, licenses and 
        approvals, if any, issued from time to time with respect to the 
        Property or the Assigned Properties;

     3. All of Assignor's interest in and to all management, maintenance, 
        service and supply contracts, if any, relating to the Property or the 
        Assigned Properties;

     4. All of Assignor's interest in and to all existing and assignable 
        guaranties and warranties (express or implied), if any, issued in 
        connection with the construction, alteration and repair of the 
        Property and/or the purchase, installation and the repair of the 
        Assigned Properties; and

     5. All rights, which Assignor may have, if any, in and to any 
        telephone numbers and listings, all master keys, all goodwill, if any,
        and any and all other rights,



        privileges and appurtenances owned by Assignor and related to or used in
        connection with the existing business operation of the Property.

     TO HAVE AND TO HOLD the Assigned Properties unto Assignee, its 
successors and assigns, forever, and Assignor does hereby bind itself, its 
successors and assigns, to WARRANT and FOREVER DEFEND, all and singular, 
title to the Assigned Properties unto Assignee, its successors and assigns, 
against every person whomsoever lawfully claiming or to claim the same, or 
any part thereof, by, through or under Assignor but not otherwise.

     ASSIGNEE ACKNOWLEDGES THAT ASSIGNOR HAS NOT MADE, DOES NOT MAKE, AND 
SPECIFICALLY NEGATES AND DISCLAIMS ANY REPRESENTATIONS, WARRANTIES, PROMISES, 
COVENANTS, AGREEMENTS OR GUARANTIES OF ANY KIND OF CHARACTER WHATSOEVER, 
WHETHER EXPRESS OR IMPLIED, ORAL OR WRITTEN, OF, AS TO, CONCERNING, OR WITH 
RESPECT TO, (i) THE VALUE, NATURE, QUALITY OR CONDITION OF THE ASSIGNED 
PROPERTIES, (ii) THE SUITABILITY OR ACCURACY OF THE ASSIGNED PROPERTIES, 
(iii) THE COMPLIANCE OF OR BY THE ASSIGNED PROPERTIES WITH ANY LAWS, RULES, 
ORDINANCES OR REGULATIONS OF ANY APPLICABLE GOVERNMENTAL AUTHORITY OF BODY, 
(iv) THE HABITABILITY, MERCHANTABILITY, MARKETABILITY, PROFITABILITY OR 
FITNESS FOR A PARTICULAR PURPOSE OF THE ASSIGNED PROPERTIES, OR (v) ANY OTHER 
MATTER WITH RESPECT TO THE ASSIGNED PROPERTIES, AND SPECIFICALLY, THAT 
ASSIGNOR HAS NOT MADE, DOES NOT MAKE AND SPECIFICALLY NEGATES AND DISCLAIMS 
ANY REPRESENTATIONS OR WARRANTEES REGARDING COMPLIANCE OF THE ASSIGNED 
PROPERTIES WITH ANY ENVIRONMENTAL PROTECTION OR POLLUTION LAWS, RULES, 
REGULATIONS, ORDERS OR REQUIREMENTS, INCLUDING, WITHOUT LIMITATION, THOSE 
PERTAINING TO SOLID WASTE, AS DEFINED BY THE U.S. ENVIRONMENTAL PROTECTION 
AGENCY REGULATIONS AT 40 C.F.R., PART 261, OR THE DISPOSAL OR EXISTENCE, IN 
OR ON THE ASSIGNED PROPERTIES, OF ANY HAZARDOUS SUBSTANCES, AS DEFINED BY THE 
COMPREHENSIVE ENVIRONMENTAL RESPONSE COMPENSATION AND LIABILITY ACT OF 1980, 
AS AMENDED, AND THE REGULATIONS PROMULGATED THEREUNDER. ASSIGNEE SHALL RELY 
SOLELY ON ITS OWN INVESTIGATION OF THE ASSIGNED PROPERTIES AND NOT ON ANY 
INFORMATION PROVIDED OR TO BE PROVIDED BY ASSIGNOR, ITS AGENTS OR 
CONTRACTORS. ASSIGNOR SHALL NOT BE LIABLE OR BOUND IN ANY MANNER BY ANY 
VERBAL OR WRITTEN STATEMENTS, REPRESENTATIONS OR INFORMATION PERTAINING TO 
THE ASSIGNED PROPERTIES OR THE OPERATION THEREOF, FURNISHED BY ANY PARTY 
PURPORTING TO ACT ON BEHALF OF ASSIGNOR.



     Assignee hereby agrees to assume and perform all obligations accruing under
the management, maintenance, service and supply contracts listed on EXHIBIT B
attached hereto and made a part hereof from and after the date hereof, and
Assignee does hereby agree to indemnify and hold Assignor harmless from all such
obligations.

     IN WITNESS WHEREOF, Assignor and Assignee have caused this Assignment to be
executed on this ___ day of ___________________, 1997

                                    ASSIGNOR:

                                    THE VARIABLE ANNUITY LIFE INSURANCE
                                    COMPANY

                                    By:  
                                       --------------------------------------
                                    Name:
                                          -----------------------------------
                                    Title:
                                          -----------------------------------

                                    ASSIGNEE:

                                    ALEXANDRIA REAL ESTATE EQUITIES, INC.

                                    By:  
                                       --------------------------------------
                                    Name:
                                          -----------------------------------
                                    Title:
                                          -----------------------------------



                                      EXHIBIT F

                             ASSIGNMENT AND ASSUMPTION OF
                             LEASES AND SECURITY DEPOSITS

     This Agreement is executed by THE VARIABLE ANNUITY LIFE INSURANCE 
COMPANY ("Seller"), and ALEXANDRIA REAL ESTATE EQUITIES, INC. 
("Purchaser"), as of the ____ day of ______________, 1997.

                                    RECITALS:

     A. Purchaser is contemporaneously purchasing from Seller and Seller 
is conveying to Purchaser the real property described on EXHIBIT A 
attached hereto and made a part hereof together with all improvements 
thereon and appurtenances thereto ("Property").

     B. The Property is occupied by various tenants ("Tenants") claiming 
under written space leases listed and described on EXHIBIT B attached 
hereto and made a part hereof (the "Rent Roll").

     C. The Rent Roll includes a list of which Tenants from whom 
security deposits were collected (herein the total of all such deposits 
being transferred are referred to as the "Security Deposits").

     D. Seller desires to transfer and assign all of Seller's rights, 
title and interests in and to (i) the Leases, and (ii) the Security 
Deposits actually collected by Seller.

    NOW, THEREFORE, in consideration of Ten Dollars ($10.00) and other 
good and valuable consideration, the receipt and sufficiency of which 
are hereby acknowledged, Seller hereby transfers and assigns to 
Purchaser all right, title and interest of Seller in and to (i) the 
Leases, and (ii) the Security Deposits actually collected by Seller.

    Purchaser hereby assumes all obligations (i) of the landlord under 
the Leases arising from and after the date hereof, and (ii) under the 
Leases to pay or account for the Security Deposits, regardless of 
whether actually transferred to Purchaser.

    Seller does not hereby transfer or assign to Purchaser any Security 
Deposits paid by the Tenants to any former owners of the Property other 
than Seller unless such Security Deposits were actually transferred to 
Seller. It is further agreed that rents under the Leases shall be 
prorated as of the date hereof, except that no proration shall be made 
for rents delinquent as of the date hereof (herein called the 
"Delinquent Rents"). Purchaser shall make a good faith and diligent 
effort to collect all Delinquent Rents for the benefit of Seller and 
such collections shall be remitted to Seller promptly upon receipt by 
Purchaser. Amounts collected by Purchaser from Tenants owing



Delinquent Rents shall be applied first to current rents owed by such 
Tenant and then to Delinquent Rents. Nothing in this Section shall 
restrict Seller's right to collect Delinquent Rents directly from a 
Tenant by any legal means.

     The terms and provisions of this Agreement shall be binding upon 
and inure to the benefit of the respective parties hereto and their 
respective heirs, executors, administrators, successors and assigns.

     EXECUTED the day and year first written above.

                                   SELLER:

                                   THE VARIABLE ANNUITY LIFE INSURANCE
                                   COMPANY

                                    By:  
                                       --------------------------------------
                                    Name:
                                          -----------------------------------
                                    Title:
                                          -----------------------------------

                                    PURCHASER:

                                    ALEXANDRIA REAL ESTATE EQUITIES, INC.

                                    By:  
                                       --------------------------------------
                                    Name:
                                          -----------------------------------
                                    Title:
                                          -----------------------------------



                                      EXHIBIT G

                                    TENANT NOTICE
_______________________

_______________________

_______________________

Re:  Your lease (the "Lease") at 940 Clopper Road, Gaithersburg, 
     Maryland (the "Project") 
     ------------------------------------------------------------

Gentlemen:

     You are hereby notified that The Variable Annuity Life Insurance 
Company ("Seller") has sold the Project to ALEXANDRIA REAL ESTATE 
EQUITIES, INC. ("Purchaser") as of the date of this Tenant Notice, and in 
connection with such sale Seller has assigned and transferred its 
interest in the Lease and any and all security deposits to Purchaser, 
and Purchaser has assumed and agreed to perform all of the landlord's 
obligations under the Lease (including any obligations set forth in the 
Lease to repay or account for any security deposits thereunder) from and 
after such date. Accordingly, (a) all of your obligations under the 
Lease from and after the date of this Tenant Notice (including your 
obligation to pay rent) shall be performable to and for the benefit of 
Purchaser, its successors and assigns, and (b) all of the obligations of 
the landlord under the Lease (including any obligations to repay or 
account for any security deposits) shall be the binding obligations of 
Purchaser and its successors and assigns. The current amount of the 
security deposit for which Purchaser is responsible with respect to the 
Lease is $__________.

     The address of Purchaser for all purposes under the Lease (including the 
payment of rent) is __________________.

                                    Very truly yours,
  
                                    THE VARIABLE ANNUITY LIFE
                                    INSURANCE COMPANY

                                    By:  
                                       --------------------------------------
                                    Name:
                                          -----------------------------------
                                    Title:
                                          -----------------------------------

                                                           "SELLER"



AGREED AND ACCEPTED:

______________________________

______________________________