BIOMUNE SYSTEMS INC
8-K, EX-10, 2000-08-15
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
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                            ASSET PURCHASE AGREEMENT


                                     between


                               DONLAR CORPORATION


                                       and


                              BIOMUNE SYSTEMS, INC.















                           Dated as of August 8, 2000




<PAGE>










                                    Exhibits

Exhibit A  -  Terms of Series H Preferred Stock




                                    Schedules




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<PAGE>


     THIS ASSET  PURCHASE  AGREEMENT  (this  "Agreement")  is entered into as of
August 8, 2000,  by and between  DONLAR  CORPORATION,  an  Illinois  corporation
("Donlar"), and BIOMUNE SYSTEMS, INC., a Nevada corporation ("Biomune").

                                   WITNESSETH

     WHEREAS,  Donlar is engaged in the  business  of protein  manufacture  (the
"Business"); and

     WHEREAS,  Biomune  desires  to  acquire  the  Business  in which  Donlar is
currently  engaged and to acquire  substantially all of the assets of Donlar and
to assume the liabilities of Donlar,  and Donlar desires to sell and assign such
assets and  liabilities to Biomune in exchange for Common Stock of Biomune,  all
on the terms and conditions hereinafter set forth.

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

                                    ARTICLE I
                ACQUISITION OF DONLAR ASSETS AND LIABILITIES AND
                         ISSUANCE OF BIOMUNE SECURITIES

     1.1  Definitions.  Certain  capitalized  terms  used in the  Agreement  are
defined in Article IX hereof;  reference to a "Schedule" or "Exhibit" is, unless
otherwise specified, to a Schedule or Exhibit to this Agreement.

     1.2 Purchase and Sale of Assets. On the Closing Date (as defined in Section
1.5),  upon the terms and  conditions  herein set forth,  Biomune shall purchase
from Donlar, and Donlar shall sell, transfer, convey and deliver to Biomune, all
of the  Acquired  Assets at the  Closing  (as  defined in  Section  1.5) for the
assumption of liabilities as provided in Section 1.3 and the Acquired  Shares as
specified  in Section  1.4. As used  herein,  "Acquired  Assets"  shall mean all
assets of Donlar, real or personal, tangible or intangible, existing or acquired
hereafter,  whether or not reflected on Donlar's books or financial  statements,
including, without limitation, the following:

          (a) all  inventory  and  supplies  used in the  normal  course  of the
     operation of Donlar's business, on the premises of the business at Closing;

          (b) real property, leaseholds and subleaseholds therein, improvements,
     fixtures and fittings  thereon,  and  easements,  rights-of-way,  and other
     appurtenants thereto (such as appurtenant rights in and to public streets);



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<PAGE>

          (c) equipment leases, and rights thereunder;

          (d)  the  agreements,   Contracts,  instruments,  Security  Interests,
     guaranties, other similar arrangements, and rights thereunder listed in the
     Donlar Schedules (as defined in Section 6.9);

          (e) franchises,  approvals,  permits, licenses, orders, registrations,
     certificates,  variances,  and similar rights obtained from governments and
     governmental  agencies  (to the extent not part of the Trade  Rights and to
     the extent such are assignable or transferable by Seller); and

          (f) books (excluding corporate record books), records, ledgers, files,
     documents, correspondence, lists, plats, architectural plans, drawings, and
     specifications,  creative materials, advertising and promotional materials,
     studies, reports, and other printed or written materials used in connection
     with Donlar's business;

          (g) claims by Donlar against third parties;

          (h) assets related to employee benefit plans;

          (i)  benefits   under   insurance   policies   related  to  unassigned
     liabilities; and

          (j) all securities, notes and other instruments owned by Donlar.

          Notwithstanding  anything to the contrary in this  Agreement,  (i) the
     Acquired  Assets  shall  not  include  the  intellectual  property  used in
     connection with the Business,  goodwill associated therewith,  licenses and
     sublicenses   granted  and  obtained  with  respect  thereto,   and  rights
     thereunder,   remedies  against   infringements   thereof,  and  rights  to
     protection  of interests  therein  under the laws of all  jurisdictions  in
     which Donlar conducts  business (the "Trade Rights") which will be retained
     by Donlar and  licensed to Biomune  pursuant to the License  Agreement  (as
     defined in Section  4.1(k)) and (ii) this Agreement shall not constitute an
     agreement  to assign or  transfer  any  government  approvals,  instrument,
     Contract,  lease,  permit or other agreement or arrangement,  or any claim,
     right  or  benefit  arising  thereunder  or  resulting  therefrom,   if  an
     assignment or transfer or an attempt to make such an assignment or transfer
     without the consent of a third party would constitute a breach or violation


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<PAGE>

     thereof or affect  adversely  the  rights of  Biomune  or  Donlar,  and any
     transfer or assignment or any interest under any such instrument, Contract,
     lease,  permit or other agreement or arrangement  that requires the consent
     of a third party shall be made  subject to such  consent or approval  being
     obtained.  In the event any such  consent or approval is not obtained on or
     prior to the Closing  Date,  Donlar  shall  continue to use all  reasonable
     efforts to obtain  such  approval or consent  after the Closing  Date until
     such time as such  consent or approval has been  obtained,  and Donlar will
     cooperate with Biomune in any lawful and economically  feasible arrangement
     to  provide  that  Biomune  shall  receive  the  benefits  under  any  such
     instrument,  Contract,  lease,  permit or other  agreement or  arrangement,
     including  performance  by  Donlar  as  agent,  if  economically  feasible,
     provided that Biomune shall  undertake to pay or satisfy the  corresponding
     liabilities  for the enjoyment of such benefit to the extent  Biomune would
     have  been  responsible  therefor  if such  consent  or  approval  had been
     obtained.

     1.3  Assumption of  Liabilities.  On the Closing  Date,  upon the terms and
conditions herein set forth, Biomune shall assume and become responsible for all
of the Assumed Liabilities.  Biomune will not assume or have any responsibility,
however,  with respect to any  obligation  or liability of Donlar or relating to
its  Business  or  properties,   included  within  the  definition  of  Excluded
Liabilities.   As  used  herein,  "Assumed  Liabilities"  shall  mean  only  the
liabilities  and  obligations  of Donlar  under the  contracts,  leases or other
arrangements  included in Subsections (d), (e), (f) and (g) of the definition of
Acquired Assets and those liabilities and obligations disclosed in Donlar's June
30, 2000 balance sheet,  together with all liabilities and obligations  incurred
by Donlar  in the  Ordinary  Course of  Business  prior to the  Closing  and all
liabilities, obligations and agreements disclosed on the Donlar Schedules.

     1.4 Issuance and Purchase of the Acquired Shares.

          (a) Prior to Closing, Biomune's Board of Directors shall authorize the
     filing  under  the  Laws  of  the  State  of  Nevada  of a  certificate  of
     designation  for "Series H" Preferred  Stock having the terms  described on
     Exhibit A hereto,  and shall authorize the issuance to Donlar of 10,000,000
     shares of Series H Preferred  Stock.  The final form of such Certificate of
     Designation (the "Series H Designation") shall be acceptable to Donlar. The
     Series H  Designation  shall be in full force and effect  under the laws of
     the State of Nevada as of the Closing.

          (b)  Subject  to the terms and  conditions  set forth  herein,  at the
     Closing,  Biomune shall issue and sell to Donlar, and Donlar shall purchase
     from  Biomune  that  number of fully  paid and  nonassessable  shares  (the
     "Acquired Shares") of (a) 859,990 shares of Common Stock, and (b) 8,710,015
     shares of Series H Preferred Stock

     1.5 Closing. The closing shall take place in person or by telecopier at the
offices of Duane,  Morris & Heckscher LLP, 227 West Monroe  Street,  Suite 3400,
Chicago, Illinois 60606, at 10:00 a.m. CDT, at a date and time as will be agreed
upon between  Donlar and Biomune  (such  closing  being called the "Closing" and
such date and time being called the "Closing Date"). At the Closing,  (a) Donlar
shall  deliver or cause to be  delivered to Biomune  such  instruments  of sale,
transfer,  conveyance  and  assignment  as  Biomune  may  reasonably  request to
evidence  and confirm  Donlar's  sale and  transfer of the  Acquired  Assets and
Assumed  Liabilities  to  Biomune;  and (b)  Biomune  shall issue and deliver to
Donlar stock certificates in definitive form,  registered in the name of Donlar,


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<PAGE>

representing  the Acquired  Shares  being  purchased by Donlar at the Closing as
payment in full for the Acquired Assets and Assumed  Liabilities being purchased
by Biomune under this Agreement.

                                   ARTICLE II
                    REPRESENTATIONS AND WARRANTIES OF BIOMUNE

     Biomune  represents  and  warrants  to Donlar the matters set forth in this
Article II as of the Closing Date:

     2.1 Organization, Standing and Qualification.

          (a) Each Biomune  Affiliated  Company is a corporation duly organized,
     validly existing and in good standing under the laws of its jurisdiction of
     incorporation,  and has all requisite  corporate power and authority to own
     or lease and operate its properties,  to carry on its business as currently
     conducted  and as now  proposed  to be  conducted,  and to  carry  out  the
     transactions  contemplated  hereby. Each Biomune Affiliated Company is duly
     qualified to do business as a foreign  corporation  and is in good standing
     under  the laws of the State of Utah,  and Utah is the only  state or other
     jurisdiction  in which either the ownership or use of the properties  owned
     or  used  by  the  Biomune  Affiliated  Companies,  or  the  nature  of the
     activities conducted by them, require such qualification,  except for those
     jurisdictions  in which  failure  to so  qualify  would not have a Material
     Adverse Effect upon the applicable Biomune Affiliated Company.  Biomune has
     made  available  to  Donlar  true,  correct  and  complete  copies  of  the
     Organizational  Documents of each Biomune Affiliated  Company, as currently
     in effect,  and has previously made available to Donlar Biomune's  complete
     corporate  minute and stock books,  which  include all actions of Biomune's
     Board of  Directors  and  shareholders,  whether  by  meeting or by written
     consent in lieu of a meeting.

          (b)  Except as set forth on  Schedule  2.1(b),  Biomune  does not own,
     directly or  indirectly,  or have the right or obligation  to acquire,  any
     interest in any business, association or other Person.

     2.2 Investment  Company Status.  Each Biomune  Affiliated Company is not an
"investment company" within the meaning of the Investment Company Act of 1940.

     2.3  Anti-Takeover  Statutes.  Biomune's  Board of Directors  has taken all
necessary action so that no Nevada "control share  acquisition" or other similar
anti-takeover statute (including,  but not limited to, Sections 78.378 - 78.3793
and  Sections  78.411 - 78.444  inclusive  of the Nevada  Revised  Statutes)  or
regulation or applicable  provision in Biomune's  Articles of  Incorporation  or
Bylaws  prohibits  the  transactions  contemplated  by  this  Agreement.  To the
Knowledge  of  Biomune,  no  other  state  takeover  statute  or  regulation  is
applicable to the transactions contemplated by this Agreement.



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<PAGE>

     2.4 Power and Authority. Biomune has the power and authority to execute and
deliver this  Agreement,  and upon  satisfaction  of all relevant  conditions in
Article IV will have power and authority to execute and deliver all  instruments
and  documents  required to be executed and  delivered in  connection  with this
Agreement  (collectively  the  "Transaction   Documents")  and  to  perform  its
obligations under the Transaction Documents. In addition, the issuance, sale and
delivery of the Acquired  Shares in accordance  with the terms of this Agreement
have been duly  authorized by all requisite  corporate  action of Biomune.  When
issued,  sold and  delivered in  accordance  with this  Agreement,  the Acquired
Shares issued hereunder will be validly issued and outstanding,  fully paid for,
nonassessable, and will not be subject to preemptive or any other similar rights
of the shareholders of Biomune or others;  provided,  however, that the Acquired
Shares may be subject to restrictions on transfer under  applicable state and/or
federal securities laws.

     2.5  Noncontravention.  Neither  the  execution  and  the  delivery  of the
Transaction  Documents nor the  consummation  of the  transactions  contemplated
thereby  (including the  assignments  referred to in Article I above),  will (i)
violate any  constitution,  statute,  regulation,  rule,  injunction,  judgment,
order,  decree,   ruling,  charge,  or  other  restriction  of  any  government,
governmental  agency,  or court to which  Biomune is subject,  (ii)  violate any
provision  of the  articles  of  incorporation  or  bylaws of  Biomune  or (iii)
conflict with, result in a breach of, constitute a default under,  result in the
acceleration of, create in any party the right to accelerate, terminate, modify,
or cancel, or require any notice under any agreement,  contract, lease, license,
instrument,  or other  arrangement to which Biomune is a party or by which it is
bound or to which any of its assets is subject (or result in the  imposition  of
any  Security  Interest  upon any of its assets),  except  where the  violation,
conflict,   breach,   default,    acceleration,    termination,    modification,
cancellation,  failure to give notice,  or Security Interest has not been waived
in writing or would not, individually or in the aggregate,  (x) adversely affect
the legality,  validity or enforceability of any of the Transaction Documents or
the transactions  contemplated thereby, (y) have or result in a material adverse
effect on the  Acquired  Assets or (z)  adversely  impair  Biomune's  ability to
perform fully on a timely basis its obligations  under any Transaction  Document
(any of (x), (y) or (z) a Material Adverse Effect). Assuming satisfaction of all
relevant  conditions in Article IV, Biomune does not need to give any notice to,
make any filing with, or obtain any authorization,  consent,  or approval of any
government or  governmental  agency in order for the Parties to  consummate  the
transactions  contemplated by this Agreement (including the assignments referred
to in Article II above), except where the failure to give notice, to file, or to
obtain any authorization, consent, or approval would not have a Material Adverse
Effect.


     2.6  Validity.  This  Agreement  constitutes  the legal,  valid and binding
obligation  of Biomune,  enforceable  in accordance  with its terms,  subject to
applicable bankruptcy,  insolvency, moratorium or other similar laws relating to
creditor's rights and general principles of equity and no representation is made
regarding the effect of laws relating to competition or antitrust.



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<PAGE>

     2.7  Capitalization;  Ownership of Other Entities.  The authorized  capital
stock of Biomune  immediately after the filing of the Series H Designation shall
consist of: (i) 500,000,000  shares of Common Stock, par value $.0001;  and (ii)
50,000,000  shares of Preferred  Stock,  par value  $.0001,  of which  1,120,000
shares are reserved for Series A  Preferred,  1,000,000  shares are reserved for
Series B Preferred,  and 12,000,000  shares are reserved for Series H Preferred.
Immediately  prior to the  Closing,  10,736,454  shares of Common  Stock will be
validly issued and outstanding,  fully paid and  nonassessable and 38,523 shares
of Series A and Series B Preferred Stock which are convertible into 1,169 shares
of Common Stock will have been issued.  In  addition,  262,580  shares of Common
Stock are reserved for issuance under  Biomune's  Stock  Incentive Plans and all
other rights to acquire equity securities of Biomune. The shareholders of record
and holders of  subscriptions,  warrants,  options,  convertible  securities and
other rights,  contingent  or other,  including  those holding  awards under the
Stock  Incentive  Plans to purchase or otherwise  acquire  equity  securities of
Biomune,  and the  number  of shares  of  Common  Stock  and the  number of such
subscriptions,  warrants, options, convertible securities, and other such rights
held by each or issuable to each, are as set forth in the attached Schedule 2.7.
The designations,  powers, preferences, rights, qualifications,  limitations and
restrictions in respect of each class and series of authorized  capital stock of
Biomune  are as set  forth  in  Biomune's  Articles  of  Incorporation  and  the
Certificates  and Statements of  Determination  of Rights and Preferences of the
Series  A, B and C  Preferred  Stock,  as  amended,  and all such  designations,
powers, preferences,  rights,  qualifications,  limitations and restrictions are
(and with  respect to the Series H Preferred  Stock,  will be as of the Closing)
valid,  binding and  enforceable  and in accordance  with all  applicable  laws.
Except as set forth in Schedule 2.7, (i) no Person owns of record or is Known to
Biomune to own  beneficially  any shares of Common Stock or Preferred  Stock, or
any securities or instruments  convertible into Common Stock or Preferred Stock;
(ii) no subscription,  warrant,  option,  convertible  security, or other right,
contingent  or other,  to purchase or otherwise  acquire  equity  securities  of
Biomune from Biomune is authorized or outstanding;  (iii) no options,  shares or
other rights have been granted or issued under the Stock  Incentive  Plans;  and
(iv) there is no commitment by Biomune to issue shares, subscriptions, warrants,
options, convertible securities or other such rights or to distribute to holders
of any of its equity securities any evidence of indebtedness or asset. Except as
provided for in Biomune's  Articles of Incorporation or as set forth in Schedule
2.7, Biomune has no obligation,  contingent or otherwise, to purchase, redeem or
otherwise acquire any of its equity securities or any interest therein or to pay
any dividend or make any other  distribution in respect  thereof.  Except as set
forth in Schedule 2.7, to the  Knowledge of Biomune,  there are no voting trusts
or agreements,  shareholders agreements, pledge agreements, buy-sell agreements,
rights of first refusal, preemptive rights or proxies relating to any securities
of Biomune,  whether or not Biomune is a party thereto.  All of the  outstanding
securities of Biomune were issued in compliance with all applicable  federal and
state  securities laws.  Biomune's only Subsidiary is Optim  Nutrition,  Inc., a
Utah corporation ("Optim") and Biomune owns all of the outstanding capital stock
of Optim.

     2.8 No Defaults. Except as set forth in Schedule 2.8, no Biomune Affiliated


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Company is in default: (a) under (i) its Organizational  Documents,  or (ii) any
material  written,  oral or implied  Contract  to which the  Biomune  Affiliated
Company is a party and, to the best  Knowledge  of  Biomune,  the other party to
such  Contract is not in default  thereunder;  or (b) with respect to any order,
writ,  injunction or decree of any court or any Government  Entity which, in the
aggregate,  will, or could  reasonably  be expected to, have a Material  Adverse
Effect on an Biomune Affiliated Company's business, financial condition, results
of operations or prospects.

     2.9 SEC Reports and Correspondence. Biomune has filed all proxy statements,
reports and other  documents  required to be filed by it under the  Exchange Act
from and after  January 1, 1997,  and  Biomune  has  furnished  Donlar  true and
correct copies of all annual reports,  quarterly  reports,  proxy statements and
other  reports under the Exchange Act filed by Biomune from and after such date,
each as filed with the SEC (collectively,  the "Biomune SEC Reports" or "Biomune
Financial Reports"). On the date of filing, each SEC Report was in compliance in
all material  respects with the  requirements of its respective  report form and
did not  contain  any untrue  statement  of a  material  fact or omit to state a
material fact required to be stated  therein or necessary to make the statements
therein,  in the light of the  circumstances  under  which they were  made,  not
misleading,  except to the extent corrected by a subsequently  filed SEC Report,
and as of the date hereof there is no fact or facts not disclosed in the Biomune
SEC Reports that relate specifically to Biomune and that could,  individually or
in the  aggregate,  reasonably  be expected to have a Material  Adverse  Effect.
Biomune has made available for inspection by Donlar copies of all correspondence
between  Biomune  and the SEC from and after  January 1, 1997.  The  Biomune SEC
Reports  have  been  prepared  from,  and are in  accordance  with the books and
records of Biomune,  comply in all material respects with applicable  accounting
requirements  and with  the  published  rules  and  regulations  of the SEC with
respect  thereto,  have been  prepared  in  accordance  with GAAP  applied  on a
consistent  basis throughout the periods involved (except as may be indicated in
the notes thereto or, in the case of unaudited  statements included in Quarterly
Reports  on Form  10-QSB,  as  permitted  by Form  10-QSB of the SEC) and fairly
presented the financial  position of Biomune and its results of operation,  cash
flows and changes in  financial  position  as of and for the periods  indicated,
except that the unaudited interim financial  statements contained in the Biomune
SEC Reports were or are subject to normal and recurring year-end adjustments.

     2.10 No Material Adverse Change.  Since the date of Biomune's June 30, 2000
balance sheet (the  "Biomune  Balance  Sheet"),  there has not been any material
adverse change in the business,  operations,  properties,  prospects,  assets or
condition of any Biomune Affiliated Company, and to the Knowledge of Biomune, no
event has  occurred  or  circumstance  exists that may result in such a material
adverse change.

     2.11 Books and Records.  The books of account,  minute books,  stock record
books,  ledgers,  order books,  and other  records and  documents of the Biomune
Affiliated  Companies,  all of which have been made  available  to  Donlar,  are
complete and correct and have been  maintained in accordance with sound business


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<PAGE>

practices  and  the  requirements  of  Section  13(b)(2)  of  the  Exchange  Act
(regardless  of whether or not the Biomune  Affiliated  Companies are subject to
that  Section)  including  the  maintenance  of an  adequate  system of internal
controls.

     2.12  Litigation.  Except as set forth in Schedule  2.12,  there is no: (a)
litigation,  action, suit, claim, proceeding or investigation pending or, to the
best  of  Biomune's  Knowledge,  threatened  against  or  affecting  an  Biomune
Affiliated  Company, or any of its properties or assets, at law or in equity, or
before or by any Government  Entity; or (b) governmental  inquiry pending or, to
the best of  Biomune's  Knowledge,  threatened  against or  affecting an Biomune
Affiliated  Company,   including  without  limitation  any  inquiry  as  to  the
qualification of an Biomune Affiliated Company to hold or receive any license or
permit,  and, to the best of Biomune's  Knowledge,  there is no basis for any of
the  foregoing.  No Biomune  Affiliated  Company  has  received  any  opinion or
memorandum  or legal advice from legal counsel to the effect that it is exposed,
from a legal standpoint,  to any liability that may be material to its business,
prospects, financial condition,  operations, property or affairs, or which might
call into question the validity of this Agreement or any of the securities to be
issued  hereunder or any action taken or to be taken pursuant hereto or thereto.
Except as set forth in Schedule  2.12,  there is no action or suit by an Biomune
Affiliated Company pending or threatened against others.

     2.13  Compliance.  Each  Biomune  Affiliated  Company  is and  has  been in
compliance with all federal,  state, local and foreign Laws, applicable to it or
to  its  business,  operations,   properties,  assets,  products  and  services,
including, but not limited to, all rules, regulations and other laws of the Food
and Drug Administration ("FDA") and each Biomune Affiliated Company has obtained
all necessary permits, licenses and other authorizations required to conduct its
business with such exceptions that do not have, and are not reasonably  expected
to have, a Material Adverse Effect.  Such licenses and permits are in full force
and effect and no violations  have been recorded in respect of any such licenses
or permits, no proceeding is pending or, to the Knowledge of Biomune, threatened
to revoke or limit any thereof,  and no notice of non-compliance,  assessment or
material  change has been  received  by an Biomune  Affiliated  Company.  To the
Knowledge of Biomune,  there is no existing Law that would  prohibit or restrict
an Biomune  Affiliated  Company from, or otherwise  adversely  affect an Biomune
Affiliated  Company in,  conducting its business in any jurisdiction in which it
is conducting business.

     2.14 Intellectual  Property Rights. Each Biomune Affiliated Company owns or
has a valid right to use the  Intellectual  Property  Rights (as defined  below)
being used to conduct its  business as now  operated  and as now  proposed to be
operated  (a complete  list of  licenses,  registrations  and  applications  for
registrations  of such  Intellectual  Property  Rights  is  attached  hereto  as
Schedule  2.14).  To the  Knowledge  of  Biomune,  the  conduct of each  Biomune
Affiliated Company's business as now operated and as now proposed to be operated
does not and will not conflict with or infringe upon the  Intellectual  Property
Rights of others.  Except as otherwise  set forth on Schedule  2.14, no claim is
pending or, to the best of Biomune's  Knowledge,  threatened  against an Biomune
Affiliated Company or its officers, employees and consultants to the effect that
any such Intellectual Property Right owned or licensed by the Biomune Affiliated
Company, or which the Biomune Affiliated Company otherwise has the right to use,


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<PAGE>

is invalid or unenforceable by the Biomune Affiliated  Company.  Except pursuant
to the terms of any licenses  specified on Schedule 2.14, no Biomune  Affiliated
Company  has an  obligation  to  compensate  any  Person for the use of any such
Intellectual  Property Rights and no Biomune  Affiliated Company has granted any
Person any license or other right to use any of the Intellectual Property Rights
of the Biomune  Affiliated  Company,  whether  requiring payment of royalties or
not.  Each  Biomune  Affiliated  Company  has taken all  reasonable  measures to
protect and preserve the security, confidentiality and value of its Intellectual
Property Rights, including its trade secrets and other confidential information.
Except as set forth in Schedule 2.14 hereof,  all employees and  consultants  of
each Biomune  Affiliated Company involved in the design,  review,  evaluation or
development  of  products  or  Intellectual  Property  Rights  have  executed  a
nondisclosure  and  assignment  of  inventions  agreement.  For purposes of this
Agreement,  "Intellectual  Property Rights" shall mean all forms of intellectual
property  rights  and  protections  that  may  be  obtained  including,  without
limitation,  all right, title and interest in and to all foreign, federal, state
and common law rights  relating  to: (i) patents,  patent  rights and all filed,
pending or potential  applications  for patents or patent rights,  including any
reissue,   reexamination,   division,   continuation   or   continuation-in-part
applications  now or hereafter  filed;  (ii) trade secret rights and  equivalent
rights;  (iii)  copyrights,  mask works and other literary property and authors'
rights,  whether or not  protected  by  copyright  or as a mask  work;  and (iv)
trademarks,  trade names, service marks,  symbols,  logos, brand names and other
proprietary indicia.

     2.15 Title to Properties; Encumbrances.

          (a) Each Biomune  Affiliated  Company owns,  or has a valid  leasehold
     interest in, or valid license for, all assets  necessary for the conduct of
     its business as currently  conducted.  All tangible  assets of each Biomune
     Affiliated  Company  are in a good  state of  maintenance  and  repair  and
     adequate for use in the Biomune Affiliated Company's business to the extent
     of its current  operations.  The Biomune  Affiliated  Companies own no real
     property.  Each Biomune  Affiliated Company enjoys peaceful and undisturbed
     possession  under all  leases  under  which it is  operating,  and all such
     leases  are valid and  subsisting  in full  force and  effect  without  any
     default of the Biomune  Affiliated  Company  thereunder and, to the best of
     the Biomune Affiliated Company's Knowledge,  without any default thereunder
     of any other party  thereto.  To the  Knowledge  of  Biomune,  no event has
     occurred and is continuing which, with due notice or lapse of time or both,
     would  constitute  a default or event of default by the Biomune  Affiliated
     Company  under any such lease or agreement  or by any other party  thereto.
     Each Biomune Affiliated  Company's possession of such property has not been
     disturbed  and no claim has been  asserted  against the Biomune  Affiliated
     Company that is adverse to its rights in such leasehold interests.

          (b) Each Biomune  Affiliated  Company has good and marketable title to
     its properties  and assets  reflected on the Biomune  Financial  Reports or
     acquired by it since the date of the Biomune  Financial  Reports other than


                                       10
<PAGE>

     properties and assets  disposed of in the ordinary course of business since
     the date of the Biomune  Financial  Reports,  and all such  properties  and
     assets are free and clear of mortgages, pledges, security interests, liens,
     charges, claims, restrictions and other encumbrances,  except for liens for
     current taxes not yet due and payable and minor  imperfections of title, if
     any, not material in nature or amount and not  materially  detracting  from
     the value or impairing the use of the property subject thereto or impairing
     the operations or proposed operations of the Biomune Affiliated Company.

     2.16  Inventory.  Excluding  return of  product in the  ordinary  course of
business,  all  inventory of the Biomune  Affiliated  Companies,  whether or not
reflected  in the Biomune  Balance  Sheet,  consists  of a quality and  quantity
usable and salable in the ordinary course of business, except for obsolete items
and items of  below-standard  quality,  all of which  have been  written  off or
written  down to net  realizable  value in the Biomune  Balance  Sheet or on the
accounting records of the Biomune  Affiliated  Companies as of the Closing Date,
as the case may be. All  inventories  not  written off have been priced at cost.
The   quantities   of  each   item  of   inventory   (whether   raw   materials,
work-in-progress,  or finished  goods) are not excessive,  but are reasonable in
the present circumstances of the Biomune Affiliated Companies.

     2.17  Accounts  Receivable.  Except as  described  in  Schedule  2.17,  all
accounts and notes  receivable  and accrued  interest  receivable of the Biomune
Affiliated  Companies  have arisen in the  Ordinary  Course of Business  and the
accounts  receivable  reserves  reflected on the Biomune Balance Sheet are as of
such date established in accordance with GAAP consistently applied.

     2.18  Suppliers.  No Major  Supplier  has  during  the last  twelve  months
materially  increased or, to the Knowledge of Biomune,  threatened to materially
increase its prices or  materially  decreased or limited or, to the Knowledge of
the  company,  threatened  to  materially  decrease  or limit its  provision  of
services or supplies to Biomune.  During the last twelve months,  there has been
no  termination,  cancellation  or limitation of, or any material change in, the
business  relationships  of  Biomune  with any Major  Supplier.  Except  for the
potential  sale of the Mountain  Lift product line, to the Knowledge of Biomune,
there will not be any such change in  relations  with any Major  Supplier or the
triggering of any right of termination, cancellation or penalty or other payment
by  or  to  any  Major  Supplier  in  connection  with  or as a  result  of  the
transactions  contemplated  by the Agreement that could,  individually or in the
aggregate, reasonably be expected to have a Material Adverse Effect.

     2.19 Products.  There are no statements,  citations or decisions by the FDA
or any other  Government  Entity  stating that any product  manufactured,  sold,
rented,  leased,  designed,  distributed  or marketed at any time by any Biomune
Affiliated Company ("Biomune  Products") is defective or unsafe or fails to meet
any standards  promulgated by the FDA or such Government Entity. There is no (i)
fact  relating to any Biomune  Product  that,  to the  Knowledge  of the Biomune
Affiliated  Companies,  may impose upon any Biomune Affiliated Company a duty to
recall or retrofit such Biomune  Product or a duty to warn customers of a defect


                                       11
<PAGE>

in such Biomune  Product,  (ii) latent or overt design,  manufacturing  or other
defect in any  Biomune  Product  that  could,  to the  Knowledge  of any Biomune
Affiliated Company, individually or in the aggregate,  reasonably be expected to
have a Material Adverse Effect or (iii) Liability for warranty claims or returns
with  respect  to  any  Biomune  Product  that  could,  individually  or in  the
aggregate, reasonably be expected to have a Material Adverse Effect.

     2.20 Environmental  Matters.  Biomune has no Knowledge of any claim and has
not  received any notice of any claim,  and no  proceeding  has been  instituted
raising  any claim  against any  Biomune  Affiliated  Company or any of its real
properties  now or formerly  owned,  leased or  operated by it or other  assets,
alleging any damage to the environment or violation of any  Environmental  Laws.
Biomune has no Knowledge of any facts that would give rise to any claim,  public
or private,  of violation  of  Environmental  Laws or damage to the  environment
emanating from, occurring on or affecting real properties now or formerly owned,
leased or operated by any Biomune Affiliated Company or to other assets or their
use, and no Biomune  Affiliated  Company has stored any  Hazardous  Materials on
real  properties  now or, to the  Knowledge of any Biomune  Affiliated  Company,
formerly  owned,  leased or  operated  by it or has  disposed  of any  Hazardous
Materials in a manner contrary to any Environmental Laws.

     2.21 Taxes.

          (a) The term "taxes" as used herein means all federal,  state,  local,
     foreign and other net income, gross income, gross receipts,  sales, use, ad
     valorem,  transfer,  franchise,  profits,  license, lease, service, service
     use,  withholding,   payroll,   employment,   excise,   severance,   stamp,
     occupation,  premium, property,  windfall profits, customs duties, or other
     taxes,  fees,  assessments or other charges of any kind whatever,  together
     with any interest and any penalties, additions to tax or additional amounts
     with  respect  thereto,  and the term "tax" means any one of the  foregoing
     taxes. The term "returns" as used herein, means all returns,  declarations,
     reports,  statements and other documents required to be filed in respect of
     taxes, and "return" means any one of the foregoing returns. The term "Code"
     means the Internal  Revenue Code of 1986, as amended.  All citations to the
     Code, or to the Treasury Regulations promulgated thereunder,  shall include
     any amendments or any substitute or successor provisions thereto.

          (b) Each Biomune  Affiliated Company has filed all returns required to
     be filed in accordance with applicable laws with the appropriate Government
     Entity in all jurisdictions in which such returns are required to be filed.
     Each Biomune  Affiliated  Company has paid all taxes  required to have been
     paid by it and  adequate  reserves  have  been  established  for all  taxes
     accrued but not yet payable.  No issues have been raised and are  currently
     pending by any taxing  authority in  connection  with any of the returns or
     taxes.  No waivers of statutes  of  limitation  with  respect to any of the
     returns  have  been  given  by or  requested  from any  Biomune  Affiliated
     Company.  All deficiencies  asserted or assessments made as a result of any
     examinations have been fully paid, or are fully reflected as a Liability in
     the Financial  Reports as being  contested and a reserve  therefor has been
     established and is fully reflected in the Financial  Reports.  There are no


                                       12
<PAGE>

     liens for taxes other than for current  taxes not yet due and payable  upon
     the assets of any Biomune Affiliated Company. All elections with respect to
     taxes affecting the Biomune Affiliated  Companies as of the date hereof are
     set forth in the Financial  Reports or are annexed  hereto.  After the date
     hereof,  no election with respect to taxes will be made without the written
     consent of Donlar.  The  Biomune  Affiliated  Companies  have not agreed to
     make, nor are they required to make, any adjustment under Section 481(a) of
     the Code by reason  of a change  in  accounting  method  or  otherwise.  No
     Biomune  Affiliated  Company  is  a  party  to  any  agreement,   Contract,
     arrangement or plan that has resulted or would result, separately or in the
     aggregate,  in the payment of any "excess  parachute  payments"  within the
     meaning of Section 280G of the Code. No Biomune  Affiliated Company has and
     has not had a permanent  establishment in any foreign country as defined in
     any  applicable  tax treaty or  convention  between  the  United  States of
     America and such  foreign  country.  Each  Biomune  Affiliated  Company has
     satisfied  all  federal,   state,   local  and  foreign   withholding   tax
     requirements,  including  but not limited to income,  social  security  and
     employment tax.

          (c) No Biomune  Affiliated  Company  has ever  filed:  (i) an election
     pursuant to Section 1362 of the Code that an Biomune  Affiliated Company be
     taxed as an S corporation;  or (ii) a consent pursuant to Section 341(f) of
     the Code relating to collapsible corporations.

     2.22 Insurance.  Each Biomune Affiliated Company carries insurance covering
its properties and businesses customary for the type and scope of its properties
and  businesses,  but in any event in the  amounts  sufficient  to  prevent  the
Biomune Affiliated Company from becoming a co-insurer.

     2.23  Other  Agreements.  Except  as set  forth in  Schedule  2.23,  to the
Knowledge of the Biomune Affiliated Companies,  no Biomune Affiliated Company is
a party to or otherwise bound by any written, oral or implied Contract, or other
restriction  which  individually or in the aggregate could Materially  Adversely
Affect the business,  prospects,  financial condition,  operations,  property or
affairs of an Biomune Affiliated  Company.  Each Biomune Affiliated Company and,
to the best of  Biomune's  Knowledge,  each  other  party  thereto,  have in all
material respects performed all the obligations required to be performed by them
to date, have received no notice of default and are not in material default with
due notice or lapse of time or both under any lease,  agreement  or Contract now
in effect to which an  Biomune  Affiliated  Company is a party or by which it or
its  property  may  be  bound.  No  Biomune  Affiliated  Company  has a  present
expectation or intention of not fully performing all its obligations  under each
such Contract,  and no Biomune Affiliated Company has Knowledge of any breach or
anticipated  breach  by the other  party to any  Contract  to which the  Biomune
Affiliated Company is a party.

     2.24 Loans and Advances.  Except as set forth in Schedule  2.24, no Biomune
Affiliated  Company  has any  outstanding  loans or advances to any Person or is
obligated to make any such loans or advances, except, in each case, for advances
to  employees  of the  Biomune  Affiliated  Company in  respect of  reimbursable


                                       13
<PAGE>

business  expenses  anticipated to be incurred by them in connection  with their
performance of services for the Biomune Affiliated Company.

     2.25  Assumptions  and Guaranties of  Indebtedness.  No Biomune  Affiliated
Company has  assumed,  guaranteed,  endorsed  or  otherwise  become  directly or
contingently  liable on any indebtedness of any other Person including,  without
limitation, Liability by way of agreement, contingent or otherwise, to purchase,
to provide  funds for payment,  to supply  funds to or  otherwise  invest in the
debtor, or otherwise to assure the creditor against loss.

     2.26 Governmental  Approvals. No registration or filing with, or consent or
approval of or other  action by, any  Government  Entity is or will be necessary
for the valid  execution,  delivery and performance by Biomune of this Agreement
and the  issuance,  sale and delivery of the Acquired  Shares other than filings
pursuant to state securities laws and Regulation D under the Securities Act, all
of which  filings  have  been  made,  or shall be timely  made,  by  Biomune  in
connection with the sale of the Acquired Shares.

     2.27 Disclosure. Biomune has fully provided Donlar with all the information
that Donlar has requested.  To the Knowledge of Biomune,  neither this Agreement
and all  Schedules  and Exhibits  hereto,  nor any other  written  statements or
certificates  made or  delivered  herewith  or  therewith,  contains  any untrue
statement  of a  material  fact or omits to state a fact  necessary  to make the
statements  contained herein or therein not misleading.  There is no fact within
the Knowledge of Biomune or any of Biomune's  executive  officers  which has not
been  disclosed  herein or in  writing  by them to Donlar  and which  Materially
Adversely Affects, or may be reasonably expected to Materially  Adversely Affect
the business,  properties,  assets or condition,  financial or otherwise, of the
Biomune  Affiliated  Company.  Other  than as stated in the  Schedules,  without
limiting the foregoing, Biomune has no Knowledge or belief that there exists, or
there is pending or  planned,  any patent,  invention,  device,  application  or
principle or any Law,  standard or condition  which would  Materially  Adversely
Affect the condition,  financial or otherwise, or the operations or prospects of
Biomune or any other Biomune Affiliated Company.

     2.28 Offering Exemption. Subject to the accuracy of the representations and
warranties  of Donlar set forth under Article III of this  Agreement,  the offer
and sale of the Acquired Shares is exempt from registration under the Securities
Act pursuant to Section 4(2) thereof,  and under applicable state securities and
"blue sky" laws.

     2.29 Brokers. No broker,  investment banker,  finder,  financial advisor or
other Person is entitled to any broker's, finder's, financial advisor's or other
similar fee or commission in connection  with the  transactions  contemplated by
this Agreement based on arrangements made by or on behalf of Biomune.



                                       14
<PAGE>

     2.30 Officers.

          (a) Set forth in Schedule  2.30 is a list of the names of the officers
     and key  employees  of Biomune and each other  Biomune  Affiliated  Company
     (collectively,  the  "Key  Employees")  together  with  the  title  or  job
     classification of each such person and the total  compensation  anticipated
     to be paid to each  such  person by  Biomune  or other  Biomune  Affiliated
     Company,  as applicable,  in the year 2000. Except as set forth on Schedule
     2.30,  none of such persons has an employment  agreement or  understanding,
     whether oral or written,  with an Biomune Affiliated Company,  which is not
     terminable  on notice by such Biomune  Affiliated  Company  without cost or
     other liability to any Biomune Affiliated Company.

          (b) To the Knowledge of the Biomune Affiliated Companies,  no officer,
     employee or consultant of Biomune or any other Biomune  Affiliated  Company
     is now in  violation  of  any  term  of  any  employment  contract,  patent
     disclosure agreement,  proprietary  information  agreement,  noncompetition
     agreement,  nonsolicitation  agreement,  confidentiality  agreement  or any
     other similar contract or agreement or any restrictive covenant relating to
     the right of any such  officer,  employee or  consultant  to be employed or
     engaged by Biomune or any other Biomune  Affiliated  Company because of the
     nature of the business conducted or to be conducted by Biomune or any other
     Biomune  Affiliated  Company  or  relating  to the use of trade  secrets or
     proprietary   information  of  others,  and  the  continued  employment  or
     engagement  of  Biomune's  and  the  other  Biomune  Affiliated   Company's
     officers,  employees or consultants  does not subject  Biomune or any other
     Biomune  Affiliated  Company or Donlar to any liability with respect to any
     of the foregoing matters.

          (c)  No Key  Employee  of  Biomune  or any  other  Biomune  Affiliated
     Company, whose termination,  either individually or in the aggregate, could
     have a Material  Adverse Effect on Biomune or any other Biomune  Affiliated
     Company, has terminated his or her employment,  or, to Biomune's Knowledge,
     has any present intention of terminating his or her employment with Biomune
     or any other  Biomune  Affiliated  Company or has any health  problems that
     could adversely affect his or her ability to continue performing his or her
     duties for Biomune or any other Biomune Affiliated Company.

     2.31  Employees.  Each Biomune  Affiliated  Company has  complied  with all
applicable  Laws  relating  to the  employment  of labor,  including  provisions
relating to wages,  hours,  equal  opportunity,  collective  bargaining  and the
payment of Social  Security  and other taxes,  and with the Employee  Retirement
Income Security Act of 1974, as amended ("ERISA").

     2.32 Transactions with Affiliates. Except as set forth in Schedule 2.32, no
director,  officer,  employee  or  shareholder  of Biomune or any other  Biomune
Affiliated  Company  or  member  of  the  family  of  any  such  person,  or any
corporation,  partnership, trust or other entity in which any such person or any
member of the family of any such  person,  has a  substantial  interest or is an
officer, director, trustee, partner or holder of more than 5% of the outstanding
capital stock thereof,  is a party to any transaction  with Biomune or any other


                                       15
<PAGE>

Biomune Affiliated Company,  including any loan, debt or Contract,  agreement or
other  arrangement  providing for the employment of,  furnishing of services by,
rental of real or personal property from or otherwise requiring payments to, any
such person or firm, or has a pecuniary  interest in any supplier or customer of
Biomune  or any  other  Biomune  Affiliated  Company  or in any  other  business
enterprise with which Biomune or any other Biomune  Affiliated  Company conducts
business.

     2.33 U.S. Real  Property  Holding  Corporation.  Biomune is not now and has
never been a "United States real property  holding  corporation,"  as defined in
Section  897(c)  (2) of the  Code  and  Section  1.897-2(b)  of the  regulations
promulgated by the Internal Revenue Service.

     2.34 Employees;  Benefit Plans. No Biomune Affiliated Company is a party to
any  collective  bargaining  agreement  and is not a  party  to any  pending  or
threatened  labor dispute.  There is no employee of Biomune or any other Biomune
Affiliated  Company whose employment is not terminable at will.  Neither Biomune
nor any other Affiliated Company has any employee benefit plans.

     2.35 Contracts; No Defaults.

          (a) No Biomune Affiliated Company has any Applicable Contract:

               (i) that involves performance of services or delivery of goods or
          materials by one or more Biomune Affiliated  Companies of an amount or
          value in excess of $25,000;

               (ii) that involves  performance  of services or delivery of goods
          or materials to one or more Biomune Affiliated  Companies of an amount
          or value in excess of $25,000;

               (iii)  that  was not  entered  into  in the  Ordinary  Course  of
          Business  and that  involves  expenditures  or receipts of one or more
          Biomune Affiliated Companies in excess of $10,000;

               (iv) that affects the Biomune Affiliated  Company's ownership of,
          leasing of, title to, use of, or any  leasehold or other  interest in,
          any real or personal  property  (except  personal  property leases and
          installment and conditional  sales agreements  having a value per item
          or aggregate payments of less than $25,000 and with terms of less than
          one year);

               (v) that  evidences a  licensing  agreement  or other  Applicable
          Contract  with respect to patents,  trademarks,  copyrights,  or other
          intellectual  property,  including  agreements  with current or former
          employees,  consultants, or contractors regarding the appropriation or
          the non-disclosure of any of the Intellectual Property Rights;

               (vi) that  evidences a collective  bargaining  agreement or other
          Applicable  Contract  to or with any  labor  union  or other  employee


                                       16
<PAGE>

          representative of a group of employees;

               (vii) that  evidences  a joint  venture,  partnership,  and other
          Applicable  Contract  (however named)  involving a sharing of profits,
          losses,  costs, or liabilities by any Biomune  Affiliated Company with
          any Person;

               (viii)  that  contains  covenants  that  in any  way  purport  to
          restrict the business  activity of any Biomune  Affiliated  Company or
          any affiliate of an Biomune Affiliated Company or limit the freedom of
          any  Biomune  Affiliated  Company  or  any  affiliate  of  an  Biomune
          Affiliated  Company  to engage in any line of  business  or to compete
          with any Person;

               (ix) that  provides  for  payments  to or by any Person  based on
          sales, purchases, or profits, other than direct payments for goods;

               (x)  that  evidences  a  power  of  attorney  that  is  currently
          effective and outstanding;

               (xi) that was entered into other than in the  Ordinary  Course of
          Business that contains or provides for an express  undertaking  by any
          Biomune   Affiliated  Company  to  be  responsible  for  consequential
          damages;

               (xii) that requires capital expenditures in excess of $10,000;

               (xiii) that evidences a written warranty,  guaranty, and or other
          similar undertaking with respect to contractual  performance  extended
          by any Biomune Affiliated Company other than in the Ordinary Course of
          Business; and

               (xiv) that  evidences an amendment,  supplement  or  modification
          (whether oral or written) in respect of any of the foregoing.

          (b) To the Knowledge of the Biomune Affiliated Companies,  no officer,
     director,  agent,  employee,  consultant,  or  contractor  of  any  Biomune
     Affiliated  Company is bound by any  Contract  that  purports  to limit the
     ability  of  such  officer,  director,  agent,  employee,   consultant,  or
     contractor to (A) engage in or continue any conduct,  activity, or practice
     relating to the  business  of any  Acquired  Company,  or (B) assign to any
     Biomune  Affiliated  Company  or to any  other  Person  any  rights  to any
     invention, improvement, or discovery.

          (c) Each  Contract  identified  or required to be  identified  in Part
     2.35(a)  is in full  force  and  effect  and is valid  and  enforceable  in
     accordance with its terms.

          (d) Except as set forth in the Schedules to this Agreement:

               (i) each  Biomune  Affiliated  Company  is, and at all time since
          January 1, 1997 has been, in full compliance with all applicable terms


                                       17
<PAGE>

          and requirements of each Contract under which such Biomune  Affiliated
          Company  has or had any  obligation  or  Liability  or by  which  such
          Biomune  Affiliated Company or any of the assets owned or used by such
          Biomune Affiliated Company is or was bound;

               (ii)  each  other  Person  that  has or  had  any  obligation  or
          Liability under any Contract under which an Biomune Affiliated Company
          has or had any rights is, and at all times  since  January 1, 1997 has
          been, in full compliance with all applicable terms and requirements of
          such Contract;

               (iii) to the Knowledge of the Biomune  Affiliated  Companies,  no
          event has occurred or circumstance exists that (with or without notice
          or lapse of time)  may  contravene,  conflict  with,  or  result  in a
          violation  or breach  of, or give any  Biomune  Affiliated  Company or
          other  Person the right to declare a default  or  exercise  any remedy
          under,  or to accelerate the maturity or performance of, or to cancel,
          terminate, or modify, any Applicable Contract; and

               (iv) no Biomune  Affiliated Company has given to or received from
          any other  Person,  at any time since  January 1, 1997,  any notice or
          other  communication  (whether oral or written)  regarding any actual,
          alleged,  possible,  or  potential  violation or breach of, or default
          under, any Contract.

          (e)  There are no  renegotiations  of,  attempts  to  renegotiate,  or
     outstanding  rights to renegotiate any material  amounts paid or payable to
     any Biomune  Affiliated  Company under current or completed  Contracts with
     any  Person  and  no  such  Person  has  made   written   demand  for  such
     renegotiation.

          (f) The  Contracts  relating  to the  sale,  design,  manufacture,  or
     provision  of the Biomune  Products  or services by the Biomune  Affiliated
     Companies  have been entered  into in the  Ordinary  Course of Business and
     have  been  entered  into  without  the  commission  of any act alone or in
     concert with any other  Person,  or any  consideration  having been paid or
     promised, that is or would be in violation of any Law.

     2.36 Year 2000.  Each  Biomune  Affiliated  Company's  computer  system and
software  including all software and  applications  developed for or sold to any
customer  or client,  and all other  systems of Biomune  are able to  accurately
process date data,  including  but not limited to,  calculating,  comparing  and
sequencing  from, into and between the twentieth  century through year 1999, the
year 2000 and the twenty-first century, including leap year calculations. To the
Knowledge  of  Biomune,  it is not  aware  of any  inability  on the part of any
service provider to any Biomune Affiliated Company to timely remedy such service
provider's own deficiencies in respect of the year 2000 problem.

     2.37  Compliance with the Nasdaq Market Listing  Requirements.  Biomune has


                                       18
<PAGE>

fully disclosed to Donlar all communications  with Nasdaq regarding its SmallCap
Market listing since January 1, 2000.

     2.38 Compensation of Key Employees.  Biomune has not increased or otherwise
changed the  compensation  of, or paid any  bonuses to, any Key  Employee at any
time during the period  commencing  90 days prior to the date of this  Agreement
through the date of this Agreement.

                                   ARTICLE III
                    REPRESENTATIONS AND WARRANTIES OF DONLAR

     Subject in every respect to exceptions  which may hereafter be disclosed on
the Donlar  Schedules,  Donlar  represents  and  warrants  to  Biomune  that the
statements contained in this Article III are correct and complete as of the date
of this  Agreement  and will be correct and  complete as of the Closing Date (as
though made then and as though the Closing Date were substituted for the date of
this  Agreement  throughout  this  Article  III),  except  as set  forth  in the
disclosure Schedules described herein.

     3.1 Organization of Donlar. Donlar is a corporation duly organized, validly
existing, and in good standing under the laws of Illinois.

     3.2  Authorization  of  Transaction.  Donlar has the power and authority to
execute and deliver  this  Agreement  and,  upon  satisfaction  of all  relevant
conditions  in Article IV will have power and  authority  to execute and deliver
the  Transaction  Documents.  This Agreement  constitutes  the valid and legally
binding  obligation  of Donlar,  enforceable  in  accordance  with its terms and
conditions.

     3.3  Validity.  This  Agreement  constitutes  the legal,  valid and binding
obligation  of Biomune,  enforceable  in accordance  with its terms,  subject to
applicable bankruptcy,  insolvency, moratorium or other similar laws relating to
creditor's rights and general principles of equity and no representation is made
regarding the effect of laws relating to competition or antitrust.

     3.4  Noncontravention.  Neither  the  execution  and  the  delivery  of the
Transaction  Documents nor the  consummation  of the  transactions  contemplated
thereby  (including the  assignments  referred to in Article I above),  will (i)
violate any  constitution,  statute,  regulation,  rule,  injunction,  judgment,
order,  decree,   ruling,  charge,  or  other  restriction  of  any  government,
governmental  agency,  or court to which  Donlar is  subject,  (ii)  violate any
provision of the articles of incorporation or bylaws of Donlar or (iii) conflict
with,  result  in a  breach  of,  constitute  a  default  under,  result  in the
acceleration of, create in any party the right to accelerate, terminate, modify,
or cancel, or require any notice under any agreement,  contract, lease, license,
instrument,  or other  arrangement  to which Donlar is a party or by which it is
bound or to which any of its assets is subject (or result in the  imposition  of
any  Security  Interest  upon any of its assets),  except  where the  violation,


                                       19
<PAGE>

conflict,   breach,   default,    acceleration,    termination,    modification,
cancellation,  failure to give notice,  or Security Interest has not been waived
in writing or would not, individually or in the aggregate,  (x) adversely affect
the legality,  validity or enforceability of any of the Transaction Documents or
the transactions  contemplated thereby, (y) have or result in a material adverse
effect on the  Acquired  Assets or (z)  adversely  impair  Donlar's  ability  to
perform fully on a timely basis its obligations  under any Transaction  Document
(any of (x), (y) or (z) a Material Adverse Effect). Assuming satisfaction of all
relevant  conditions  in Article IV, Donlar does not need to give any notice to,
make any filing with, or obtain any authorization,  consent,  or approval of any
government or  governmental  agency in order for the Parties to  consummate  the
transactions  contemplated by this Agreement (including the assignments referred
to in Article II above), except where the failure to give notice, to file, or to
obtain any authorization, consent, or approval would not have a Material Adverse
Effect.

     3.5 Brokers' Fees. Donlar has no liability or obligation to pay any fees or
commissions  to any broker,  finder,  or agent with respect to the  transactions
contemplated  by this  Agreement  for  which  Biomune  could  become  liable  or
obligated.

     3.6  Title to  Tangible  Assets.  Donlar  has  good  title  to,  or a valid
leasehold  interest in, the Acquired  Assets.  Effective  upon the assumption by
Biomune of the Assumed Liabilities and the transfer of certain liens in favor of
Donlar  creditors  (the  "Donlar  Liens")  to Biomune  in  connection  with such
assumption,  Donlar will have at the Closing good, valid and indefeasible  title
to, or a valid leasehold interest in, the Acquired Assets, free and clear of the
Donlar Liens.

     3.7 Subsidiaries. Donlar has no Subsidiaries.

     3.8  Financial  Statements.  Within 30 days of the date of this  Agreement,
Donlar will  deliver to Biomune the  following  financial  statements  of Donlar
(collectively  the  "Financial  Statements"):  (i) unaudited  balance sheets and
statements of income,  changes in shareholders'  equity, and cash flow as of and
for the fiscal years ended December 31, 1999, 1998 and 1997 for Donlar; and (ii)
unaudited  balance  sheets and  statements of income,  changes in  shareholders'
equity, and cash flow (the "Most Recent Financial Statements") as of and for any
fiscal  quarter  completed  after  December 31,  1999,  if any (the "Most Recent
Fiscal Month End") for Donlar.  The Financial  Statements  (including  the notes
thereto)  have been  prepared in  accordance  with GAAP  applied on a consistent
basis  throughout the periods  covered  thereby and present fairly the financial
condition of Donlar as of such dates and the results of operations of Donlar for
such periods.

     3.9 Material Liabilities; Material Adverse Events.

          (a) Donlar  does not have any  material  liability  (whether  known or
     unknown,  whether  asserted or unasserted,  whether absolute or contingent,
     whether  accrued or  unaccrued,  whether  liquidated or  unliquidated,  and
     whether due or to become due,  including any  liability for taxes),  except
     for (i) liabilities set forth on the face of Donlar's Financial  Statements
     (rather than in any notes thereto) and (ii)  liabilities  which have arisen


                                       20
<PAGE>

     after March 31, 2000 in the Ordinary Course of Business.

          (b) Since December 31, 1999,  there has not been any material  adverse
     change  in the  financial  condition  of Donlar  taken as a whole.  Without
     limiting the  generality of the  foregoing,  since that date Donlar has not
     engaged in any practice,  taken any action, or entered into any transaction
     outside the  Ordinary  Course of  Business  except for the  acquisition  of
     Donlar common stock pursuant to that certain Stock Purchase Agreement dated
     August 7, 2000 by and  between  Donlar  and  Biomune  and the  transactions
     contemplated by this Agreement.

     3.10  Legal  Compliance.  Donlar  has  complied  with all  applicable  laws
(including rules,  regulations,  codes, plans, injunctions,  judgments,  orders,
decrees,  rulings, and charges thereunder) of federal, state, local, and foreign
governments  (and all  agencies  thereof),  except  where the failure to comply,
individually or in the aggregate would not have a Material Adverse Effect.

     3.11 Tax Matters.

          (a) Donlar has filed all tax returns that it was required to file, and
     has paid all taxes shown thereon as owing, except where the failure to file
     tax returns or to pay taxes would not have a Material Adverse Effect.

          (b) Prior to Closing,  Donlar will make  available to Biomune  correct
     and complete copies of all federal tax returns,  examination  reports,  and
     statements of deficiencies  assessed  against or agreed to by any of Donlar
     and its Subsidiaries since December 31, 1997.

          (c) Donlar has not waived  any  statute of  limitations  in respect of
     taxes or agreed to any extension of time with respect to any tax assessment
     or deficiency.

          (d) Donlar is not a party to any tax allocation or sharing agreement.

          (e)  Donlar  has not been a member  of an  Affiliated  Group  filing a
     consolidated federal tax return.

     3.12 Real Property. The Donlar Schedules will list and describe briefly all
real property leased or subleased to Donlar. Prior to Closing,  Donlar will make
available to Biomune correct and complete copies of the leases and subleases (as
amended to date) listed in the Donlar Schedules.  With respect to each lease and
sublease  listed in the  Donlar  Schedules,  and except as  otherwise  disclosed
therein:

          (i) the lease or sublease is legal, valid, binding,  enforceable,  and
     in full force and effect;

          (ii) the lease or sublease will continue to be legal, valid,  binding,


                                       21
<PAGE>

     enforceable,  and in full force and effect on identical terms following the
     consummation of the transactions contemplated hereby;

          (iii) no party to the lease or sublease  is in breach or default,  and
     no event has occurred which, with notice or lapse of time, would constitute
     a breach or default or permit  termination,  modification,  or acceleration
     thereunder;

          (iv) no party to the lease or sublease has  repudiated  any  provision
     thereof;

          (v) there are no disputes, oral agreements, or forbearance programs in
     effect as to the lease or sublease;

          (vi) with respect to each sublease, the representations and warranties
     set forth in  subsections  (i) through (v) above are true and correct  with
     respect to the underlying lease;

          (vii)  Donlar  has not  assigned,  transferred,  conveyed,  mortgaged,
     deeded  in  trust,   or  encumbered   any  interest  in  the  leasehold  or
     subleasehold,  except for term  financing  existing  as of the date of this
     Agreement;

          (viii) all facilities leased or subleased thereunder have received all
     approvals  of  governmental  authorities  (including  licenses and permits)
     required in connection  with the  operation  thereof and have been operated
     and maintained in accordance with applicable laws,  rules, and regulations;
     and

          (ix) all facilities  leased or subleased  thereunder are supplied with
     utilities  and  other   services   necessary  for  the  operation  of  said
     facilities.

     3.13  Intellectual   Property.  The  Donlar  Schedules  will  identify  all
trademarks,  patents,  copyrights,  each patent or  registration  which has been
issued to Donlar with respect to any of its intellectual  property and any other
intellectual   property  owned  by  Donlar,   identifies   each  pending  patent
application or application for  registration  which Donlar has made with respect
to any of its intellectual property, and identifies each license,  agreement, or
other permission which Donlar has granted to any third party with respect to any
of its intellectual property.

     3.14 Contracts.  The Donlar  Schedules will list all written  contracts and
other  written  agreements to which Donlar is a party the  performance  of which
will involve consideration in excess of $10,000.  Prior to Closing,  Donlar will
make  available to Biomune a correct and complete  copy of each such contract or
other agreement so listed (as amended to date).

     3.15  Powers of  Attorney.  There  are no  outstanding  powers of  attorney
executed on behalf of Donlar.



                                       22
<PAGE>

     3.16 Litigation. The Donlar Schedules will set forth each instance in which
Donlar (i) is subject to any outstanding  injunction,  judgment,  order, decree,
ruling, or charge or (ii) is a party to any action, suit,  proceeding,  hearing,
or investigation of, in, or before any court or quasi-judicial or administrative
agency of any federal,  state, local, or foreign jurisdiction,  except where the
injunction,  judgment, order, decree, ruling, action, suit, proceeding, hearing,
or investigation would not have a Material Adverse Effect.

     3.17  Employees;  Employee  Benefits.  Each Donlar  Affiliated  Company has
complied with all applicable Laws relating to the employment of labor, including
provisions  relating to wages, hours, equal opportunity,  collective  bargaining
and the  payment  of Social  Security  and other  taxes,  and with the  Employee
Retirement  Income  Security  Act of  1974,  as  amended  ("ERISA").  No  Donlar
Affiliated Company is a party to any collective  bargaining agreement and is not
a party to any pending or threatened  labor dispute.  Except as set forth in the
Donlar Schedules,  there is no employee of Donlar or any other Donlar Affiliated
Company  whose  employment  is not  terminable  at will.  Donlar's and the other
Donlar Affiliated Company's only employee benefit plans are listed in the Donlar
Schedules (the "Employee  Benefit Plans").  With respect to the Employee Benefit
Plans: (a) each Donlar Affiliated Company is, and always has been, in compliance
in all material  respects with the  applicable  provisions of ERISA and the Code
and the regulations promulgated  thereunder;  (b) there has been no violation of
ERISA's fiduciary  obligations nor have there been any prohibited  transactions;
(c) there does not exist any Liability for any federal, state or local taxes nor
does any Employee Benefit Plan have any unfunded Liability;  and (d) all reports
required to be filed with all Government Entities have been so filed.

     3.18 Environmental,  Health, and Safety Matters. Donlar has no Knowledge of
any claim and has not received any notice of any claim,  and no  proceeding  has
been instituted  raising any claim against any Donlar Affiliated  Company or any
of its real properties now or formerly owned,  leased or operated by it or other
assets, alleging any damage to the environment or violation of any Environmental
Laws. Except as set forth in the Donlar  Schedules,  (i) Donlar has no Knowledge
of any facts that would give rise to any claim,  public or private, of violation
of Environmental Laws or damage to the environment  emanating from, occurring on
or affecting real  properties now or formerly  owned,  leased or operated by any
Donlar  Affiliated  Company or to other  assets or their use, and (ii) no Donlar
Affiliated Company has stored any Hazardous Materials on real properties now or,
to the Knowledge of any Donlar  Affiliated  Company,  formerly owned,  leased or
operated by it or has disposed of any Hazardous  Materials in a manner  contrary
to any Environmental Laws.

     3.19 Certain Business  Relationships with Donlar  Shareholders.  Donlar has
not been involved in any material business  arrangement or relationship with any
Donlar shareholders within the past 12 months, and none of Donlar's shareholders
or their  Affiliates owns any material asset,  tangible or intangible,  which is
used in the business of Donlar.

     3.20  Disclaimer  of  other  Representations  and  Warranties.   Except  as


                                       23
<PAGE>

expressly  set forth in this Article  III,  Donlar  makes no  representation  or
warranty,  express or  implied,  at law or in  equity,  in respect of any of its
assets  (including,  without  limitation,  the Acquired Assets),  liabilities or
operations,  including,  without limitation,  with respect to merchantability or
fitness  for any  particular  purpose,  and any such  other  representations  or
warranties are hereby  expressly  disclaimed.  Biomune hereby  acknowledges  and
agrees that,  except to the extent  specifically  set forth in this Article III,
Biomune is purchasing the Acquired Assets on an "as-is, where-is" basis. Without
limiting the  generality of the  foregoing,  Donlar makes no  representation  or
warranty  regarding any assets other than the Acquired Assets or any liabilities
other  than the  Assumed  Liabilities,  and none  shall be  implied at law or in
equity.

     3.21 Investor Status. Donlar is an "accredited investor" within the meaning
of Rule 501 under the Securities Act.

     3.22  Sophistication.  Donlar has  sufficient  Knowledge and  experience in
investing  in  companies  similar  to  Biomune  in terms of  Biomune's  stage of
development  so as to be able to evaluate the risks and merits of its investment
in Biomune and it is able financially to bear the risks thereof, and it has been
afforded  the  opportunity  during the course of  negotiating  the  transactions
contemplated  by  this  Agreement  to  ask  questions  of,  and to  secure  such
information  from,  the  Donlar  Affiliated  Companies  and their  officers  and
directors as it deems  necessary  to evaluate  the merits of entering  into such
transactions. All such questions have been answered satisfactorily and Donlar or
its counsel have received and reviewed the due diligence  materials delivered to
it/them by the Donlar Affiliated Companies;

     3.23 Restrictions on Resale of Acquired Shares. Donlar understands that the
Acquired  Shares  have not been  registered  under  the  Securities  Act and are
restricted shares. Donlar understands that no shares can be sold unless they are
first  registered  under the  Securities  Act or unless an  exemption  from such
registration is available;

     3.24 Investment Intent. Donlar is acquiring the Acquired Shares for its own
account for  investment  only,  and not as a nominee and not with a view towards
distribution  of any part thereof,  and that Donlar has no present  intention of
selling, granting any participation in, or otherwise distributing the same;

     3.25  Exemption from  Registration.  Donlar  understands  that the Acquired
Shares has not been registered under the Securities Act. Donlar also understands
that the Acquired Shares is being offered and sold pursuant to an exemption from
registration  contained  in the  Securities  Act  based  in part  upon  Donlar's
representations contained in the Agreement;


                                       24
<PAGE>

                                   ARTICLE IV
                          CONDITIONS TO THE OBLIGATIONS
                                 OF THE PARTIES

     4.1 Conditions to the  Obligations  of Donlar.  The obligation of Donlar to
purchase  and pay for the  Acquired  Shares and sell and  transfer  the Acquired
Assets and assign the Assumed Liabilities on the Closing Date is, at its option,
subject to the satisfaction or waiver by Donlar,  on or before the Closing Date,
of the following conditions:

          (a) Opinion of  Biomune's  Counsel.  Donlar shall have  received  from
     Durham Jones & Pinegar,  counsel for Biomune,  an opinion dated the Closing
     Date in form and substance reasonably satisfactory to Donlar.

          (b)  Representations and Warranties of Biomune to be True and Correct.
     The representations  and warranties  contained in Article II shall be true,
     complete  and correct on and as of the Closing Date with the same effect as
     though such  representations and warranties had been made on and as of such
     date,  and the President  and Treasurer of Biomune shall have  certified to
     Donlar in writing to such effect.

          (c)  Performance.  Biomune shall have  performed and complied with all
     agreements contained herein required to be performed or complied with by it
     prior to or at the Closing Date, and the President and Treasurer of Biomune
     shall have certified to Donlar in writing to such effect and to the further
     effect that all of the  conditions  set forth in this Section 4.1 have been
     satisfied.

          (d) Due  Diligence.  Donlar  shall have  completed  its due  diligence
     investigation  of Biomune and shall be satisfied in its sole  discretion in
     all respects with the findings thereof.

          (e)   Proceedings  to  be   Satisfactory.   All  corporate  and  other
     proceedings  to be taken by Biomune  in  connection  with the  transactions
     contemplated  hereby and all documents incident thereto shall be reasonably
     satisfactory  in form and  substance to Donlar and its counsel,  and Donlar
     and its counsel  shall have  received  all such  counterpart  originals  or
     certified or other copies of such documents as they reasonably may request.

          (f)  Purchase by Donlar.  Subject to the  conveyance  of the  Acquired
     Assets and Assumed  Liabilities  to Biomune for the Acquired  Shares on the
     Closing  Date,   Biomune  shall  have  delivered  a  stock  certificate  or
     certificates representing the Acquired Shares.

          (g) Supporting  Documents.  Donlar and its counsel shall have received
     copies of the following documents:



                                       25
<PAGE>

               (i) (A) a  certificate  of the Secretary of State of Nevada dated
          as of a recent date as to the due  incorporation  and good standing of
          Biomune; and (B) a certificate of the Secretary of State of Utah as to
          the good standing of Biomune with the State of Utah.

               (ii) a certificate of the Secretary or an Assistant  Secretary of
          Biomune  dated the  Closing  Date and  certifying:  (A) that  attached
          thereto  is a true and  complete  copy of the  Bylaws of Biomune as in
          effect on the date of such certification; (B) that attached thereto is
          a true and complete  copy of all  resolutions  adopted by the Board of
          Directors or the  shareholders  of Biomune  authorizing the execution,
          delivery and  performance of this  Agreement,  the issuance,  sale and
          delivery of the Acquired  Shares and that all such  resolutions are in
          full  force  and  effect  and  are  all  the  resolutions  adopted  in
          connection with the transactions  contemplated by this Agreement;  (C)
          that Biomune's  Articles of Incorporation  have not been amended since
          the  date  of  the  last  amendment  referred  to in  the  certificate
          delivered  pursuant to clause (i)(A) above;  and (D) to the incumbency
          and  specimen  signature  of each  officer of Biomune  executing  this
          Agreement, and any of the stock certificates representing the Acquired
          Shares and any certificate or instrument furnished pursuant hereto and
          a certification by another officer of Biomune as to the incumbency and
          signature of the officer signing the  certificate  referred to in this
          clause (ii); and

               (iii) such additional  supporting documents and other information
          with respect to the operations and affairs of Biomune as Donlar or its
          counsel reasonably may request.

          (h) Preemptive  Rights;  Termination of  Shareholder  Agreements.  All
     shareholders  of Biomune  having  any  preemptive,  first  refusal or other
     rights with  respect to the  issuance  of the  Acquired  Shares  shall have
     irrevocably waived the same in writing. All shareholder agreements,  voting
     agreements,  registration rights agreements and similar agreements relating
     to the capital stock of Biomune  shall have been  terminated by all parties
     to such agreements.

          (i) Other Waivers and Consents.  Biomune shall have obtained all other
     necessary  waivers or consents to the  execution of this  Agreement and the
     related agreements.

          (j)  Stockholder  Approvals.  As  required  by  applicable  Law,  this
     Agreement shall have been approved and adopted by the requisite vote of the
     shareholders  of Biomune and Donlar and the issuance of the Acquired Shares
     pursuant to this  Agreement  shall have been approved by the requisite vote
     of the shareholders of Biomune.

          (k) License  Agreement.  Biomune and Donlar  shall have entered into a
     mutually acceptable  exclusive License Agreement (the "License  Agreement")
     whereby  Donlar shall  license the Trade Rights to Biomune,  which  License
     Agreement shall provide,  among other things,  for payment of a two percent
     (2%) license fee on all sales  revenues  for  products  deriving in any way
     from the Trade Rights,  which License  Agreement  shall  continue until the
     latest expiration of any patent comprised within the Trade Rights.



                                       26
<PAGE>

          (l) Reverse Stock Split.  Biomune shall have effected a twenty-five to
     one (25 : 1) reverse stock split of all Common Stock.

     4.2 Conditions to the Obligations of Biomune.  The obligation of Biomune to
issue  the  Acquired  Shares  and  purchase  the  Acquired  Assets  and  Assumed
Liabilities on the Closing Date is, at its option,  subject to the  satisfaction
or  waiver  by  Biomune,  on or  before  the  Closing  Date,  of  the  following
conditions:

          (a) Opinion of Donlar's  Counsel.  Biomune  shall have  received  from
     Duane, Morris & Heckscher, counsel for Donlar, an opinion dated the Closing
     Date in form and substance reasonably satisfactory to Biomune.

          (b)  Representations  and Warranties of Donlar to be True and Correct.
     The representations and warranties of Donlar contained in Article III shall
     be true,  complete  and correct on and as of the Closing Date with the same
     effect as though such  representations  and warranties had been made on and
     as of such date,  and the  President  and  Treasurer  of Donlar  shall have
     certified to Biomune in writing to such effect.

          (c)  Performance.  Donlar shall have  performed  and complied with all
     agreements contained herein required to be performed or complied with by it
     prior to or at the Closing Date,  and the President and Treasurer of Donlar
     shall have  certified  to  Biomune  in  writing  to such  effect and to the
     further  effect that all of the  conditions  set forth in this  Section 4.2
     have been satisfied.

          (d) Due  Diligence.  Biomune  shall have  completed  its due diligence
     investigation  of Donlar and shall be satisfied in its sole  discretion  in
     all respects with the findings thereof.

          (e)   Proceedings  to  be   Satisfactory.   All  corporate  and  other
     proceedings  to be taken by  Donlar  in  connection  with the  transactions
     contemplated  hereby and all documents incident thereto shall be reasonably
     satisfactory in form and substance to Biomune,  and Biomune and its counsel
     shall have  received all such  counterpart  originals or certified or other
     copies of such documents as they reasonably may request.

          (f) Conveyance of the Acquired Assets.  Donlar shall have conveyed the
     Acquired Assets to Biomune on the Closing Date.

          (g) Opinions of Financial  Advisors.  Biomune  shall have  received an
     opinion from independent financial advisors to be retained by Biomune which
     advisors  shall  be  reasonably  acceptable  to  Donlar  on or prior to the
     Closing  Date to the  effect  that,  as of the  date of such  opinion,  the
     exchange  of the  Acquired  Shares  for the  Acquired  Assets  and  Assumed
     Liabilities is fair to the  shareholders  of Biomune from a financial point
     of view. If such opinion  determines that a lower number of Acquired Shares
     than those  contemplated  by Section  1.4(b)  would be fair to the  Biomune


                                       27
<PAGE>

     shareholders,  then Donlar  may, at its option and in its sole  discretion,
     (i) accept such lower number  (which shall then be the Acquired  Shares for
     purposes of this  Agreement)  in which event the  condition of this Section
     4.2(g) shall be deemed satisfied or (ii) terminate this Agreement  pursuant
     to Section 7.1(d)

          (h)  Stockholder  Approvals.  As  required  by  applicable  law,  this
     Agreement shall have been approved and adopted by the requisite vote of the
     shareholders  of Biomune and Donlar and the issuance of the Acquired Shares
     pursuant to this  Agreement  shall have been approved by the requisite vote
     of the shareholders of Biomune.

          (i) No Adverse Action.  There shall not be any  injunction,  judgment,
     order, decree,  ruling, or charge in effect preventing  consummation of any
     of the transactions contemplated by this Agreement.

          (j)  Certificate  of Donlar.  Donlar shall have delivered to Biomune a
     certificate  to the effect that each of the conditions  specified  above in
     Sections 4.2(a) through (i) is satisfied in all respects;

          (k)   Final   Inspection   of   Acquired   Assets.   Biomune   or  its
     representatives shall have been afforded an opportunity, within forty-eight
     (48) hours  prior to  Closing,  to conduct  an  on-site  inspection  of the
     Acquired  Assets  and based on such  inspection  or  otherwise  shall  have
     reasonably  determined  that the  Acquired  Assets shall be  acceptable  to
     Biomune.

          (l) License Agreement.  Biomune and Donlar shall have entered into the
     License Agreement.

          (m) Payment of  Promissory  Note.  Donlar will have repaid any amounts
     owing to  Biomune  under the  Promissory  Note or any other  instrument  of
     indebtedness owed by Donlar to Biomune.


                                    ARTICLE V
                              COVENANTS OF BIOMUNE

     Biomune  covenants  and agrees  that,  unless  Donlar  otherwise  agrees in
writing, from the date of this Agreement until the Closing:

     5.1 Financial Statements, Reports, etc. Biomune shall maintain proper books
of accounts and records and shall deliver to Donlar:

          (a) as soon as available and in any event within 90 days after the end
     of each fiscal year of Biomune,  a copy of the annual audit report for such
     year for Biomune including therein a balance sheet of Biomune as of the end


                                       28
<PAGE>

     of such fiscal year and the statements of income,  retained earnings and of
     changes in financial position of Biomune for such fiscal year,  prepared in
     accordance with GAAP by a firm of independent public  accountants  selected
     by Donlar and accompanied by an opinion of the accounting firm;

          (b) as soon as available and in any event within 45 days after the end
     of each fiscal  quarter in each  fiscal year of Biomune a balance  sheet of
     Biomune and the statements of income and retained earnings as of the end of
     such  quarter,  and of changes in  financial  position  of Biomune for such
     quarter and for the period  commencing  at the end of the  previous  fiscal
     year and ending with the end of such  quarter,  unaudited  but  prepared in
     accordance  with GAAP  subject to  year-end  adjustments  and as  otherwise
     permitted by Form 10-QSB of the SEC and  certified  by the Chief  Executive
     Officer  or  Chief  Financial  Officer  of  Biomune,   in  each  case  with
     comparative  statements  for the  corresponding  period in the prior fiscal
     year;

          (c) promptly following receipt by Biomune, each audit response letter,
     accountant's  management  letter  and other  written  report  submitted  to
     Biomune by its independent  public accountants in connection with an annual
     or interim audit of the books of Biomune;

          (d) promptly after the  commencement  thereof,  notice of all actions,
     suits,  claims,  proceedings,  investigations  and  inquiries  of the  type
     described in Section 2.12 that could Materially Adverse Affect Biomune;

          (e) promptly upon sending,  making  available or filing the same,  all
     press  releases,  reports and  financial  statements  that Biomune sends or
     makes available to its shareholders generally; and

          (f) promptly,  from time to time, such other information regarding the
     business, prospects, financial condition,  operations,  property or affairs
     of Biomune as Donlar reasonably may request.

     5.2 No Issuance of Shares;  Right of First Offer.  Biomune  shall not issue
any of its securities  other than debt securities with no equity feature without
Donlar's prior written consent.  In the event Donlar so consents to any issuance
of securities by Biomune, Biomune shall, prior to any issuance by Biomune of any
of its securities  other than debt securities  with no equity feature,  offer to
Donlar  by  written  notice  the  right,  for a period of 30 days,  to  purchase
Donlar's pro rata portion of such  securities  (as defined below) for cash at an
amount equal to the price or other  consideration  for which such securities are
to be issued; provided,  however, that the first offer rights of Donlar pursuant
to this Section 5.2 shall not apply to securities issued: (a) upon conversion of
any of the Preferred Shares;  (b) as a stock dividend or upon any subdivision of
shares of Common Stock,  provided that the  securities  issued  pursuant to such
stock dividend or subdivision are limited to additional  shares of Common Stock;
(c) pursuant to subscriptions,  warrants,  options,  convertible securities,  or
other rights that are listed in Schedule 2.7 as being outstanding on the Closing


                                       29
<PAGE>

Date;  (d) solely in  consideration  for the  acquisition,  whether by merger or
otherwise,  by Biomune of all or substantially all of the stock or assets of any
other entity where such  acquisition was approved by Donlar;  (e) pursuant to an
underwritten  public  offering;  or (f)  pursuant to the  exercise of options to
purchase Common Stock granted to employees, directors or consultants of Biomune,
not to exceed in the aggregate 262,580 shares, appropriately adjusted to reflect
stock splits, stock dividends,  combinations of shares and the like with respect
to the Common Stock, less the number of shares as so adjusted issued pursuant to
options  outstanding  on the date of this  Agreement  and listed in Schedule 2.7
pursuant  to clause  (c) above (the  shares  exempted  by this  clause (f) being
hereinafter referred to as the "Reserved Employee Shares"). For purposes of this
Section 5.2,  Donlar's  pro rata  portion  shall be an amount equal to the total
number of  securities  to be offered by Biomune  multiplied  by a fraction,  the
numerator  of which is the  number of shares of Common  Stock held by Donlar and
the  denominator  of which is the sum of the  total  number  of shares of Common
Stock that are issued and outstanding.  Biomune's written notice to Donlar shall
describe the  securities  proposed to be issued by Biomune and shall specify the
number,  price and payment terms.  Donlar may accept  Biomune's  offer as to the
full number of securities  offered to it or any lesser number, by written notice
thereof given by it to Biomune prior to the  expiration of the aforesaid  30-day
period,  in which event Biomune  shall  promptly sell and Donlar shall buy, upon
the terms specified,  the number of securities agreed to be purchased by Donlar.
Biomune shall be free at any time prior to 60 days after the  expiration of such
30-day  period,  to offer and sell to any third  party or parties  the number of
such  securities  not agreed by Donlar to be  purchased by it, at a price and on
payment terms no less  favorable to Biomune than those  specified in such notice
of  offer  to  Donlar.  However,  if such  third  party  sale or  sales  are not
consummated within such 60-day period, Biomune shall not sell such securities as
shall not have been purchased  within such period  without again  complying with
this Section 5.2.

     5.3 Corporate Existence. Biomune shall maintain, and shall cause each other
Biomune Affiliated Company to maintain,  its corporate  existence and all of its
rights and licenses necessary to maintain its business in full force and effect.

     5.4 Properties,  Business,  Insurance.  Biomune shall  maintain,  and shall
cause each other Biomune  Affiliated  Company to maintain,  as to its properties
and business,  with financially sound and reputable insurers,  insurance against
such  casualties and  contingencies  and of such types and in such amounts as is
consistent with its Ordinary Course of Business; provided, however, that Biomune
may acquire and/or divest itself of the Mountain Lift product line or rights and
properties  associated  with that  product  line and  Biomune may sell shares of
Purizer  Corporation  owned by Biomune as of the date of this Agreement  without
limitation and without further consent or action by Donlar.

     5.5 Inspection,  Consultation and Advice.  Biomune shall permit,  and shall
cause  each  other  Biomune  Affiliated  Company  to  permit,   Donlar  and  its
representatives, upon reasonable advance notice to Biomune, to visit and inspect
any of the properties of the Biomune Affiliated  Companies,  examine their books
and  records  and take  copies and  extracts  therefrom,  discuss  the  affairs,
finances and accounts of the Biomune  Affiliated  Companies with their officers,
employees and public accountants and Biomune hereby authorizes,  and shall cause


                                       30
<PAGE>

each other Biomune Affiliated Company to authorize,  said accountants to discuss
with Donlar and such designees such affairs,  finances and accounts, and consult
with and advise the  management  of Biomune  and each other  Biomune  Affiliated
Company as to its affairs,  finances and accounts,  all at reasonable  times and
upon reasonable notice.

     5.6 Restrictive Agreements Prohibited.  No Biomune Affiliated Company shall
become  a  party  to  any  agreement  that  by  its  terms  restricts  Biomune's
performance of this Agreement or Biomune's Articles of Incorporation.

     5.7 Transactions  with Affiliates.  Except as set forth in Schedule 5.7, or
as otherwise  approved by the Board of  Directors  of Biomune  after the Closing
Date,  Biomune shall not enter into any transaction with any director,  officer,
employee or holder of more than 5% of the outstanding capital stock of any class
or series of capital stock of Biomune,  member of the family of any such person,
or any corporation, partnership, trust or other entity in which any such person,
or member of the family of any such  person,  is a director,  officer,  trustee,
partner  or holder of more than 5% of the  outstanding  capital  stock  thereof,
except for transactions on customary terms related to such person's employment.

     5.8  Compensation.  Biomune,  through  its  President,  may pay,  accrue or
otherwise  provide  compensation and bonuses to any employee in any amounts that
he or she deems reasonable;  provided,  however, that Biomune shall not, without
Donlar's prior written consent, after recommendation by the President: (a) award
or grant any  options  to Key  Employees  for the  purchase  of Common  Stock or
Preferred  Stock or award,  grant,  issue or sell any Common  Stock or Preferred
Stock to any Key  Employees;  (b)  increase  the base  salary  paid,  accrued or
otherwise  provided to any of the Key Employees in or with respect of any fiscal
year by an amount in excess of 10% of such base salary in or with respect of the
prior fiscal year,  provided that no such  increase may be effected  until after
the first  anniversary  of the Closing Date; or (c) pay bonuses to Key Employees
for any fiscal year.

     5.9 Bylaws.  Biomune  shall at all times  cause its Bylaws to provide  that
unless otherwise required by the laws of the state of its incorporation, (a) any
one director and (b) any holder or holders of at least 19.9% of the  outstanding
shares of Common Stock, shall have the right to call a meeting, respectively, of
the Board of  Directors or  shareholders.  Biomune  shall at all times  maintain
provisions  in  its  Bylaws  and  Articles  of  Incorporation  indemnifying  all
directors  against  Liability  and absolving  all  directors  from  Liability to
Biomune and its  shareholders to the maximum extent  permitted under the laws of
the state of its incorporation. Biomune's Bylaws shall provide that at least one
of the  directors  designated  solely  by a  holder  of at  least  19.9%  of the
outstanding  shares of Common Stock will be a member of any committee created by
the Board of Directors.

     5.10  Granting of Options.  Biomune shall not grant to any of its officers,
employees  or  consultants  options to  purchase  Common  Stock or any  security


                                       31
<PAGE>

convertible  into  Common  Stock or change  the  pricing  or other  terms of any
outstanding options without Donlar's prior written consent.

     5.11 Compliance with Laws. Biomune shall comply, and shall cause each other
Biomune  Affiliated Company to comply,  with all applicable Laws,  noncompliance
with which could  Materially  Adversely Affect an Biomune  Affiliated  Company's
business or condition, financial or otherwise.

     5.12 Change in Nature of Business.  Biomune shall not, and shall cause each
other Biomune  Affiliated Company not to, make any material change in the nature
of its business to something  unrelated to that  conducted on the Closing  Date,
except as approved by Donlar.

     5.13 Tax  Payments.  Biomune  shall,  and shall  cause each  other  Biomune
Affiliated  Company to,  prepare and timely file all tax returns  required to be
filed by it, and Biomune  shall,  and shall cause each other Biomune  Affiliated
Company to, timely pay any taxes and  estimated  taxes,  including  additions to
tax,  interest  and  penalties,  required  to be paid by Biomune  after the date
hereof.  All transfer,  excise or other taxes payable to any jurisdiction in the
United  States and outside the United  States by reason of the sale and transfer
of the Acquired  Shares pursuant to this Agreement shall be paid or provided for
by Biomune.  All federal and state income tax returns of the Biomune  Affiliated
Companies for any period shall be prepared and signed by a nationally recognized
accounting  firm.  The  preparation  of  such  returns  shall  be at an  Biomune
Affiliated Company's expense.

     5.14 Material Changes and Litigation.  Biomune shall use reasonable efforts
to promptly  notify of Donlar of any material  adverse  change in the  business,
properties,  assets or condition of any Biomune Affiliated Company, financial or
otherwise, as distinguished from general information about the biopharmaceutical
and  nutraceutical  industries or general market and economic  conditions and of
any litigation or governmental  proceeding or  investigation  pending or, to the
Knowledge of Biomune,  threatened  against any Biomune  Affiliated  Company,  or
against any officer, director, Key Employee or principal shareholder,  which, if
adversely  determined,  would Materially  Adversely Affect an Biomune Affiliated
Company's  present  or  then  contemplated  business,   properties,   assets  or
condition, financial or otherwise.

     5.15 New  Developments.  Biomune  shall  cause,  and shall cause each other
Biomune Affiliated Company to cause, all technological developments,  patentable
or  unpatentable   inventions,   discoveries  or  improvements  by  any  Biomune
Affiliated  Company's  employees or  consultants  to be documented in accordance
with  industry  practice  and,  where  possible  and  appropriate,  to file  and
prosecute,  on a timely  basis,  United  States and foreign  patent,  copyright,
trademark, mask work or other Intellectual Property Rights applications relating
to and protecting the Biomune Affiliated  Company's  inventions,  discoveries or
developments on behalf of the Biomune Affiliated Company.



                                       32
<PAGE>

     5.16  Assets.  Except for the sale of the  Mountain  Lift  product line and
sales of  Purizer  Corporation  common  stock,  in either  case only if the sale
proceeds  are used for  satisfaction  of  outstanding  accounts  payable owed to
independent third parties, Biomune shall not, and shall cause each other Biomune
Affiliated  Company not to, sell (other than sales of  inventory in the Ordinary
Course of  Business),  lease,  or  otherwise  dispose of any asset or  property,
including  Intellectual  Property Rights, of any Biomune  Affiliated  Company or
mortgage,  pledge or permit the  imposition of any lien or other  encumbrance on
any asset or property,  including  Intellectual  Property Rights, of any Biomune
Affiliated Company.

     5.17 No Negotiation.  Biomune shall not, and shall cause each other Biomune
Affiliated  Company  not  to,  directly  or  indirectly  solicit,  initiate,  or
encourage any inquiries or proposals from,  discuss or negotiate  with,  provide
any  non-public  information  to, or  consider  the  merits  of any  unsolicited
inquiries  or proposals  from,  any Person  (other than Donlar)  relating to any
transaction involving the sale of the business or assets (other than the sale of
the Mountain Life product line and sales of inventory in the Ordinary  Course of
Business) of any Biomune Affiliated  Company, or any of the capital stock of any
Biomune Affiliated Company, or any merger, consolidation,  business combination,
or  similar  transaction  involving  any  Biomune  Affiliated  Company.  Nothing
contained in this Section 5.17 shall  prohibit the Board of Directors of Biomune
from  furnishing  information  to, or entering into  discussions or negotiations
with,  any Person  that makes an  unsolicited  bona fide  proposal to acquire an
Biomune  Affiliated  Company  pursuant  to  a  merger,  consolidation,  business
combination,  or similar  transaction,  if, and only to the extent that, (a) the
Board of Directors of Biomune, after consultation with and based upon the advice
of  independent  legal  counsel,  determines  in good faith that such  action is
required  for the Board of  Directors  of Biomune to comply  with its  fiduciary
duties to shareholders  imposed by law, (b) prior to furnishing such information
to, or entering into  discussions or  negotiations  with,  such person,  Biomune
provides  written  notice  to  Donlar  to  the  effect  that  it  is  furnishing
information to, or entering into discussions or negotiations  with, such person,
and (c) Biomune keeps Donlar  informed,  on a current  basis,  of the status and
details of any such discussions or negotiations.

     5.18  Shareholder  Meeting.  Biomune  shall  call and hold a meeting of its
shareholders (the "Shareholders' Meeting"), as promptly as practicable after the
date of this  Agreement  for the  purpose  of  voting  on the  adoption  of this
Agreement.  Biomune shall use its best efforts to solicit from its  shareholders
proxies in favor of the  adoption  of this  Agreement,  and shall take all other
action necessary or advisable to secure the vote(s) of its shareholders required
by Nevada Law as applicable to obtain such  adoption,  provided,  however,  that
Biomune  shall not be obligated  to solicit  proxies in favor of the adoption of
this Agreement at the  Shareholders'  Meeting to the extent that Biomune's Board
of Directors determines in good that such failure to solicit proxies is required
in  order to  comply  with its  fiduciary  duties  under  applicable  Law  after
receiving advice to such effect from independent legal counsel.

     5.19  Appropriate  Action;  Consents;  Filings.  Biomune shall use its best


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<PAGE>

efforts to (i) take, or cause to be taken,  all appropriate  action,  and do, or
cause to be done, all things necessary, proper or advisable under applicable law
to  consummate  and  make  effective  the  transactions   contemplated  by  this
Agreement;  (ii) obtain all consents,  licenses,  permits,  waivers,  approvals,
authorizations or orders required under Law (including,  without limitation, all
foreign and domestic  (federal,  state and local)  governmental  and  regulatory
rulings  and  approvals  of  parties  to  Contracts)  in  connection   with  the
authorization,  execution and delivery of this Agreement and the consummation by
Biomune of the transactions  contemplated  hereby;  and (iii) make all necessary
filings,  and thereafter  make any other required  submissions,  with respect to
this  Agreement  required  under (A) the Securities Act and the Exchange Act and
the rules  and  regulations  promulgated  thereunder,  and any other  applicable
federal or state securities laws; and (B) any other applicable Law.

     5.20 Indemnification.

          (a) In addition to all rights and remedies  available to Donlar at law
     or in equity, Biomune shall indemnify,  defend and hold harmless Donlar and
     any  parent,  subsidiary,   associate,   affiliate,  partner,  shareholder,
     director,  officer,  employee or agent of Donlar (all of the  foregoing are
     collectively referred to as the "Indemnified Parties") from and against and
     pay on behalf of or reimburse  such party as and when  incurred all losses,
     including, without limitation,  diminutions in value, Liabilities, demands,
     claims,  actions or causes of action,  costs,  damages,  judgments,  debts,
     settlements,   assessments,   deficiencies,   taxes,  penalties,  fines  or
     expenses,  whether or not  arising out of any claims by or on behalf of any
     third party, including interest, penalties,  reasonable attorneys' fees and
     expenses  and all  reasonable  amounts  paid in  investigation,  defense or
     settlement of any of the foregoing (collectively,  "Losses") which any such
     party  may  suffer,  sustain  or  become  subject  to,  as a result  of, in
     connection with, or relating to or by virtue of:

               (i)  any  material   misrepresentations  or  material  breach  of
          warranty on the part of Biomune under Article II;

               (ii) any material  misrepresentation in or material omission from
          any of the representations or warranties contained in any certificate,
          document or instrument  or the Schedules  delivered to Donlar by or on
          behalf of Biomune in connection herewith;

               (iii) any  material  nonfulfillment  or breach of any covenant or
          agreement  on the part of Biomune  under this  Agreement  or under any
          certificate, document or instrument delivered in connection therewith;
          or

               (iv) any action,  demand,  proceeding,  investigation or claim by
          any third party,  including,  without limitation,  Government Entities
          against or  affecting  an Biomune  Affiliated  Company or any of their
          affiliates  which,  if successful,  would give rise to or evidence the
          existence of or relate to a material breach of (A) any of the material
          representations or warranties at the time made or (B) the covenants of
          Biomune.



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<PAGE>

          (b) All  indemnification  rights hereunder shall survive the execution
     and delivery of this  Agreement and the  consummation  of the  transactions
     contemplated  hereunder  indefinitely,  regardless  of  any  investigation,
     inquiry  or  examination  made for or on behalf  of, or any  Knowledge  of,
     Donlar  and/or any of the other  Indemnified  Parties or the  acceptance by
     Donlar of any certificate or opinion.

          (c) If for any reason the indemnity  provided for in this Section 5.20
     is unavailable to any  Indemnified  Party or is  insufficient  to hold each
     such  Indemnified  Party harmless from all such Losses arising with respect
     to  the  transactions   contemplated   hereunder,   then  Biomune  and  the
     Indemnified  Party shall each  contribute  to the amount paid or payable by
     such Loss in such  proportion  as is  appropriate  to reflect  not only the
     relative benefits received by Biomune on the one hand, and such Indemnified
     Party on the other, but also the relative fault of Biomune on the one hand,
     and the Indemnified  Party on the other, as well as any relevant  equitable
     considerations.  In addition,  Biomune agrees to reimburse any  Indemnified
     Party upon demand for all  reasonable  expenses,  including  legal  counsel
     fees,  incurred  by such  Indemnified  Party or any such  other  person  in
     connection  with  investigating,  preparing or defending any such action or
     claim. The indemnity,  contribution and expense  reimbursement  obligations
     that  Biomune  has under  this  Section  5.20 shall be in  addition  to any
     liability that Biomune may otherwise have.  Biomune further agrees that the
     indemnification  and reimbursement  commitments set forth in this Agreement
     shall apply whether or not the  Indemnified  Party is a formal party to any
     such lawsuits, claims or other proceedings.

          (d) Any  indemnification  of either  Donlar  or any other  Indemnified
     Party by Biomune  pursuant to this  Section  5.20 shall be effected by wire
     transfer  of  immediately  available  funds  from  Biomune  to  an  account
     designated by Donlar or such other  Indemnified  Party within 15 days after
     the determination thereof.

     5.21 No Incurrence  of Debt.  Biomune shall not, and shall cause each other
Biomune  Affiliated  Company  not to,  other  than  in the  Ordinary  Course  of
Business,  incur any  indebtedness  for  borrowed  money or  assume,  guarantee,
endorse or otherwise as an accommodation  become responsible for the obligations
of any other Person.

     5.22  Confidentiality.  Biomune  shall,  and shall cause each other Biomune
Affiliated  Company to,  maintain  in  confidence,  and cause  their  respective
directors,  officers,  employees, agents and advisors to maintain in confidence,
any written,  oral or other  information  obtained in confidence  from Donlar in
connection  with  this  Agreement  or the  contemplated  transactions.  If  this
Agreement is terminated, Biomune shall return or destroy as much of such written
information as Donlar may reasonably request.



                                       35
<PAGE>

                                   ARTICLE VI
                               COVENANTS OF DONLAR

     Donlar  covenants  and agrees  that,  unless  Biomune  otherwise  agrees in
writing, from the date of this Agreement until the Closing:

     6.1  Operation of Business.  From and after the date of this  Agreement and
until the Closing  Date,  Donlar will conduct its  business in a reasonable  and
prudent manner in accordance with past practices,  and will use its best efforts
to  preserve  its  existing  business  and  relationships  with  its  employees,
customers, suppliers, and others, to preserve and protect its properties, and to
conduct its business in compliance  with all  applicable  laws and  regulations.
During that  period,  Donlar will not make any material  divestitures  of assets
(other  than  inventory  sold in the normal and  Ordinary  Course of Business as
presently  conducted),  and will not encumber any of the Acquired Assets, or any
other assets,  rights, or interests which are subject to this Agreement.  Donlar
will not otherwise  engage in any practice,  take any action,  or enter into any
transaction outside the Ordinary Course of Business.

     6.2 Full Access. Donlar will permit representatives of Biomune to have full
access at all reasonable  times, and in a manner so as not to interfere with the
normal business  operations of Donlar, to all premises,  properties,  personnel,
books,  records  (including  tax  records),   contracts,  and  documents  of  or
pertaining to Donlar.

     6.3  Exclusivity.  Donlar will not  solicit,  initiate,  or  encourage  the
submission of any proposal or offer from any Person  relating to the acquisition
of all or substantially  all of the capital stock or assets of Donlar (including
any acquisition structured as a merger, consolidation, or share exchange).

     6.4  Shareholder  Meeting.  Donlar  shall  call and hold a  meeting  of its
shareholders (the "Donlar  Shareholders'  Meeting"),  as promptly as practicable
after the date of this  Agreement  for the purpose of voting on the  adoption of
this  Agreement.  Donlar  shall  use  its  best  efforts  to  solicit  from  its
shareholders proxies in favor of the adoption of this Agreement,  and shall take
all other action  necessary or advisable to secure the votes of its shareholders
required by  Illinois  law as  applicable  to obtain  such  adoption,  provided,
however,  that Donlar shall not be obligated to solicit  proxies in favor of the
adoption of this  Agreement  at the Donlar  Shareholders'  Meeting to the extent
that Donlar's Board of Directors determines in good that such failure to solicit
proxies  is  required  in  order  to  comply  with its  fiduciary  duties  under
applicable  Law after  receiving  advice to such effect from  independent  legal
counsel.

     6.5  Appropriate  Action;  Consents;  Filings.  Donlar  shall  use its best
efforts to (i) take, or cause to be taken,  all appropriate  action,  and do, or
cause to be done, all things necessary, proper or advisable under applicable law
to  consummate  and  make  effective  the  transactions   contemplated  by  this
Agreement;  (ii) obtain all consents,  licenses,  permits,  waivers,  approvals,
authorizations or orders required under Law (including,  without limitation, all
foreign and domestic  (federal,  state and local)  governmental  and  regulatory


                                       36
<PAGE>

rulings  and  approvals  of  parties  to  Contracts)  in  connection   with  the
authorization,  execution and delivery of this Agreement and the consummation by
Donlar of the  transactions  contemplated  hereby;  and (iii) make all necessary
filings,  and thereafter  make any other required  submissions,  with respect to
this  Agreement  required  under (A) the Securities Act and the Exchange Act and
the rules  and  regulations  promulgated  thereunder,  and any other  applicable
federal or state securities laws; and (B) any other applicable Law.

     6.6 Indemnification.

          (a) In addition to all rights and remedies available to Biomune at law
     or in equity, Donlar shall indemnify,  defend and hold harmless Biomune and
     any  parent,  Subsidiary,   associate,   Affiliate,  partner,  shareholder,
     director,  officer,  employee or agent of Biomune (all of the foregoing are
     collectively  referred to as the "Biomune  Indemnified  Parties")  from and
     against and pay on behalf of or reimburse  such party as and when  incurred
     all  losses,   including,   without   limitation,   diminutions  in  value,
     Liabilities,  demands, claims, actions or causes of action, costs, damages,
     judgments, debts, settlements, assessments, deficiencies, taxes, penalties,
     fines or expenses, whether or not arising out of any claims by or on behalf
     of any third party,  including interest,  penalties,  reasonable attorneys'
     fees and expenses and all reasonable amounts paid in investigation, defense
     or  settlement  of any of the foregoing  (collectively,  "Biomune  Losses")
     which any such party may suffer,  sustain or become subject to, as a result
     of, in connection with, or relating to or by virtue of:

               (i)  any  material   misrepresentations  or  material  breach  of
          warranty on the part of Donlar under Article III;

               (ii) any material  misrepresentation in or material omission from
          any of the representations or warranties contained in any certificate,
          document or instrument or the Schedules  delivered to Biomune by or on
          behalf of Donlar in connection herewith;

               (iii) any  material  nonfulfillment  or breach of any covenant or
          agreement  on the part of Donlar  under  this  Agreement  or under any
          certificate, document or instrument delivered in connection therewith;
          or

               (iv) any action,  demand,  proceeding,  investigation or claim by
          any third party,  including,  without limitation,  Government Entities
          against  or  affecting  an Donlar  Affiliated  Company or any of their
          affiliates  which,  if successful,  would give rise to or evidence the
          existence of or relate to a material breach of (A) any of the material
          representations or warranties at the time made or (B) the covenants of
          Donlar.

          (b) All  indemnification  rights hereunder shall survive the execution
     and delivery of this  Agreement and the  consummation  of the  transactions
     contemplated  hereunder  indefinitely,  regardless  of  any  investigation,
     inquiry  or  examination  made for or on behalf  of, or any  Knowledge  of,


                                       37
<PAGE>


     Biomune  and/or  any  of  the  other  Biomune  Indemnified  Parties  or the
     acceptance by Biomune of any certificate or opinion.

          (c) If for any reason the  indemnity  provided for in this Section 6.6
     is unavailable to any Biomune  Indemnified Party or is insufficient to hold
     each such Biomune  Indemnified  Party harmless from all such Biomune Losses
     arising  with  respect to the  transactions  contemplated  hereunder,  then
     Donlar and the  Biomune  Indemnified  Party  shall each  contribute  to the
     amount  paid or  payable  by such  Biomune  Loss in such  proportion  as is
     appropriate to reflect not only the relative benefits received by Donlar on
     the one hand, and such Biomune Indemnified Party on the other, but also the
     relative  fault of  Donlar on the one hand,  and the  Biomune  Party on the
     other,  as well as any  relevant  equitable  considerations.  In  addition,
     Donlar agrees to reimburse any Biomune Party upon demand for all reasonable
     expenses,   including   legal  counsel  fees,   incurred  by  such  Biomune
     Indemnified   Party  or  any  such   other   person  in   connection   with
     investigating,  preparing  or  defending  any such  action  or  claim.  The
     indemnity,  contribution and expense reimbursement  obligations that Donlar
     has under this  Section  6.6 shall be in  addition  to any  liability  that
     Donlar may otherwise have.  Donlar further agrees that the  indemnification
     and  reimbursement  commitments  set forth in this  Agreement  shall  apply
     whether or not the Biomune  Indemnified Party is a formal party to any such
     lawsuits, claims or other proceedings.

          (d)  Any  indemnification  of  either  Biomune  or any  other  Biomune
     Indemnified  Party by Donlar pursuant to this Section 6.6 shall be effected
     by wire transfer of immediately  available  funds from Donlar to an account
     designated  by Biomune or such other  Biomune  Indemnified  Party within 15
     days after the determination thereof.

     6.7 No  Incurrence  of Debt.  Donlar  shall not, and shall cause each other
Donlar Affiliated  Company not to, other than in the Ordinary Course of Business
or in  connection  with the  closing of the  transactions  contemplated  by this
Agreement,  incur any  additional  indebtedness  for  borrowed  money or assume,
guarantee,  endorse or otherwise as an accommodation  become responsible for the
obligations of any other Person.

     6.8  Confidentiality.  Donlar  shall,  and shall  cause each  other  Donlar
Affiliated  Company to,  maintain  in  confidence,  and cause  their  respective
directors,  officers,  employees, agents and advisors to maintain in confidence,
any written,  oral or other  information  obtained in confidence from Biomune in
connection  with  this  Agreement  or the  contemplated  transactions.  If  this
Agreement is terminated,  Donlar shall return or destroy as much of such written
information as Biomune may reasonably request.

     6.9 Donlar  Schedules.  Within ten (10)  business  days of the date of this
Agreement,  Donlar  will  deliver to  Biomune a set of  schedules  (the  "Donlar
Schedules")  indicating (a) the Acquired Assets described in Section 1.2(d), and
(b) any exceptions to the  representations and warranties of Donlar set forth in
Article III.




                                       38
<PAGE>


                                   ARTICLE VII
                                   TERMINATION

     7.1 Termination.  This Agreement may be terminated at any time prior to the
Closing Date:

          (a) by the written agreement of Donlar and Biomune;

          (b) by either  Donlar or Biomune by written  notice to the other party
     if the  transactions  contemplated  hereby shall not have been  consummated
     pursuant hereto by 5:00 p.m. CST on October 31, 2000, or such later date as
     selected by the mutual written consent of Donlar and Biomune, provided that
     no party may give such notice if its breach of this Agreement has precluded
     the consummation of this Agreement;

          (c) by Biomune by written notice to Donlar if (i) the  representations
     and  warranties  of Donlar  shall not have  been  true and  correct  in all
     respects  (in  the  case  of a  representation  or  warranty  containing  a
     materiality  qualification)  or in all material  respects (in the case of a
     representation  or warranty without a materiality  qualification) as of the
     date when made, or (ii) if any of the  conditions  set forth in Section 4.2
     shall not have been, or if it becomes  apparent that any of such conditions
     will not be,  fulfilled by 5:00 p.m. CST on October 30, 2000, or such later
     date as  selected  by the mutual  written  consent  of Donlar and  Biomune,
     unless  such  failure  shall be due to the failure of Biomune to perform or
     comply with any of the covenants,  agreements,  or conditions  hereof to be
     performed or complied with by it prior to the Closing; or

          (d) by Donlar by written notice to Biomune if (i) the  representations
     and  warranties  of  Biomune  shall not have been true and  correct  in all
     respects  (in  the  case  of a  representation  or  warranty  containing  a
     materiality  qualification)  or in all material  respects (in the case of a
     representation  or warranty without a materiality  qualification) as of the
     date when made,  (ii) if any of the  conditions  set forth in  Section  4.1
     shall not have been, or if it becomes  apparent that any of such conditions
     will not be,  fulfilled by 5:00 p.m. CST on October 30, 2000, or such later
     date as  selected  by the mutual  written  consent  of Donlar and  Biomune,
     unless  such  failure  shall be due to the  failure of Donlar to perform or
     comply with any of the covenants,  agreements,  or conditions  hereof to be
     performed  or  complied  with by it prior to the  Closing,  or (iii) in the
     event  Donlar  elects to  terminate  by reason of the  option  provided  in
     Section 4.2(g).

     7.2  Effect  of  Termination.  In the  event  of the  termination  of  this
Agreement pursuant to Section 7.1, this Agreement shall become void, without any
liability to any party in respect hereof or the transactions contemplated hereby
on the part of any party hereto or any of their respective directors,  officers,
employees,  agents,  consultants,  representatives,  advisers  or  shareholders,
except,  provided,  however,  that: (a) nothing shall release a breaching  party
from  liability  resulting  from  such  party's  breach of this  Agreement,  (b)
Sections  5.21,   5.22,  7.2,  7.3  and  Articles  VIII  and  IX  shall  survive
indefinitely  subject to applicable  statutes of limitations,  and (c) if Donlar


                                       39
<PAGE>


refuses or fails to consummate the  transactions  contemplated by this Agreement
for any reason other than the failure of the conditions set forth in Section 4.1
or pursuant to the termination right under Section 4.2(g), then Donlar shall pay
to  Biomune a  break-up  fee in the  amount of Three  Hundred  Thousand  Dollars
($300,000)  (the  "Break-up  Fee"),  and (d) if  Biomune  refuses  or  fails  to
consummate the transactions  contemplated by this Agreement for any reason other
than the failure of the  conditions set forth in Section 4.2, then Biomune shall
pay the Break-up Fee to Donlar.

     7.3 Donlar's Put Right.

          (a) Upon termination of this Agreement pursuant to Section 7.1, Donlar
     shall have the right,  but not the obligation,  to put any or all shares of
     the Common  Stock (the "Put  Shares")  acquired by Donlar  pursuant to that
     Stock Purchase  Agreement dated as of August 7, 2000, by and between Donlar
     and Biomune (the "Stock Purchase Agreement"),  to Biomune and Biomune shall
     be  obligated to purchase the Put Shares for cash payable to Donlar by wire
     transfer,  if Donlar has paid cash in whole or in part, or by redelivery to
     Donlar of any outstanding  promissory notes previously  delivered by Donlar
     in  payment  for the Put Shares  (the "Put  Right").  The price  payable by
     Biomune per share shall be equal to the  Aggregate  Purchase  Price paid by
     Donlar  to  acquire  the Put  Shares  (as  defined  in the  Asset  Purchase
     Agreement)  divided by the total number of Put Shares acquired by Donlar in
     that transaction (the "Per Share Price").

          (b) In the event Donlar  decides the  exercise  the Put Right,  Donlar
     shall provide Biomune with written notice of its intent to exercise the Put
     Right  specifying the number of shares which it intends to put and the wire
     instructions for payment. Donlar shall also provide Biomune such additional
     documentation as Biomune may reasonably  request to convey and transfer the
     Put Shares to Biomune.  Notwithstanding  the  foregoing,  no later than ten
     business days after  Biomune's  receipt of the written  notice from Donlar,
     Biomune  shall wire an amount  equal to the product of the number of shares
     put by Donlar  multiplied by the Per Share Price to Donlar  pursuant to the
     wire instructions provided in the notice.

          (c) The Put Right shall be exercisable in whole or in part at any time
     from the date this Agreement is terminated  until the expiration of 60 days
     thereafter and may be exercised on one or more separate occasions.

          (d) In order to meet its  potential  obligations  under the Put Right,
     until the Closing,  Biomune agrees that it will keep any proceeds  received
     by it from  Donlar  under  the Stock  Purchase  Agreement  segregated  from
     Biomune's other assets and will not use such proceeds for any purpose.




                                       40
<PAGE>


                                  ARTICLE VIII
                                  MISCELLANEOUS

     8.1  Expenses.  Each party hereto will pay its own  expenses in  connection
with the  transactions  contemplated  hereby,  whether or not such  transactions
shall be consummated.

     8.2 Survival of Agreements. All covenants, agreements,  representations and
warranties  made  herein  or in  any  other  agreement,  or any  certificate  or
instrument delivered to Donlar pursuant to or in connection with this Agreement,
shall survive the Closing for a period of two years.

     8.3 Remedies.  In case any one or more of the representations,  warranties,
covenants or agreements set forth in this Agreement  shall have been breached by
any  party  hereto,  the  party  or  parties  entitled  to the  benefit  of such
representations,  warranties, covenants or agreements may proceed to protect and
enforce  their  rights  either  under  the  indemnification  provisions  of this
Agreement or by suit in equity and/or action at law, including,  but not limited
to, an action for  damages as a result of any such  breach  and/or an action for
specific  performance  of any  such  covenant  or  agreement  contained  in this
Agreement.  The rights,  powers and remedies of the parties under this Agreement
are cumulative and not exclusive of any other right,  power or remedy which such
parties  may have  under  any other  agreement  or law.  No  single  or  partial
assertion or exercise of any right,  power or remedy of a party  hereunder shall
preclude any other or further assertion or exercise thereof.

     8.4  Brokerage.  Each  party will  indemnify  and hold  harmless  the other
against and in respect of any claim for brokerage or other commissions  relative
to this Agreement or to the transactions  contemplated  hereby, based in any way
on agreements,  arrangements or understandings made or claimed to have been made
with any third party.

     8.5 Parties in Interest.  All  representations,  covenants  and  agreements
contained in this  Agreement by or on behalf of any of the parties  hereto shall
bind and inure to the benefit of the  respective  successors  and assigns of the
parties hereto whether so expressed or not.  Without  limiting the generality of
the foregoing,  all representations,  covenants and agreements benefiting Donlar
shall inure to the benefit of any and all  subsequent  holders from time to time
of the Acquired Shares.

     8.6 Notices.  All  notices,  requests,  consents  and other  communications
hereunder  shall be in  writing  and  shall be  delivered  in  person or sent by
overnight delivery or by certified or registered mail, return receipt requested,
addressed as follows:

          (a) if to Biomune, at Biomune Systems, Inc., 64 East Winchester, Suite
     303, Salt Lake City, Utah 84107,  telecopier:  (801)  261-5123,  Attention:
     President,  with a copy  to  Kevin  R.  Pinegar,  Esquire,  Durham  Jones &
     Pinegar,  111 East  Broadway,  Suite  900,  Salt  Lake  City,  Utah  84111,
     telecopier: (801) 415-3500;

          (b) if to Donlar,  at Donlar  Corporation,  6502 South Archer  Avenue,


                                       41
<PAGE>


     Bedford  Park,  Illinois  60501,  telecopier:  (708)  563-9212,  Attention:
     Lawrence  Koskan,  with a copy to Eric  Fogel,  Esquire,  Duane,  Morris  &
     Heckscher  LLP,  227 West Monroe  Street,  Suite 3400,  Chicago,  IL 60606,
     telecopier: (312) 499-6701;

or, in any such case,  at such other  address  or  addresses  as shall have been
furnished in writing by such party to the others.

All notices,  consents or other communications required or permitted to be given
under this  Agreement  shall be deemed to have been duly given and  received (i)
when delivered personally,  (ii) three business days after being mailed by first
class mail,  postage  prepaid,  or (iii) one  business day after being sent by a
reputable  overnight delivery service,  postage or delivery charges prepaid,  to
the parties at their  respective  addresses stated on the signature page of this
Agreement. Notices may also be given by telecopier and shall be effective on the
date  transmitted if confirmed  within 24 hours  thereafter by a signed original
sent in the manner provided in the preceding sentence.

     8.7  Governing  Law. This  Agreement  shall be governed by and construed in
accordance   with  the  laws  of  the  State  of  Nevada   notwithstanding   any
conflicts-of-law  doctrines  of such  state  or any  other  jurisdiction  to the
contrary.  EACH OF THE PARTIES  HEREBY  WAIVES ANY RIGHT IT MAY HAVE TO TRIAL BY
JURY IN ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF THIS AGREEMENT.

     8.8 Entire  Agreement.  This  Agreement,  including the  Schedules  hereto,
together with the other writings referred to herein or delivered pursuant hereto
which  form a part  hereof,  constitutes  the sole and entire  agreement  of the
parties with respect to the subject  matter  hereof.  All  Schedules  hereto are
hereby incorporated herein by reference.

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

     8.10  Amendments.  This  Agreement  may not be amended or modified,  and no
provisions  hereof may be waived,  without  the  written  consent of Biomune and
Donlar.

     8.11 Severability.  The invalidity or unenforceability of any term, phrase,
clause, paragraph,  restriction,  covenant,  agreement or other provision hereof
shall in no way affect the validity or enforceability of any other provision, or
any part thereof,  but this  Agreement  shall be construed as if such invalid or
unenforceable term, phrase, clause, paragraph, restriction,  covenant, agreement
or other  provision had never been contained  herein unless the deletion of such


                                       42
<PAGE>


term,  phrase,  clause,  paragraph,  restriction,  covenant,  agreement or other
provision  would result in such a material  change as to cause the covenants and
agreements contained herein to be unreasonable or would materially and adversely
frustrate the objectives of the parties as expressed in this Agreement.

     8.12 Titles and Subtitles.  The titles and subtitles used in this Agreement
are  for  convenience  only  and  are  not to be  considered  in  construing  or
interpreting any term or provision of this Agreement.

     8.13 Public Announcements. Biomune and Donlar shall consult with each other
before  issuing  any press  release or  otherwise  making  any public  statement
relating to the subject  matter of this  Agreement  and shall not issue any such
press release or make any such public  statement prior to such  consultation and
without the consent of the other party which shall not be unreasonably withheld,
except as may be required by federal securities laws.

     8.14 Bulk Transfer Laws.  Biomune  acknowledges that Donlar will not comply
with the provisions of any bulk transfer laws of any  jurisdiction in connection
with the transactions contemplated by this Agreement.

                                   ARTICLE IX
                                   DEFINITIONS

     9.1   "Affiliated   Companies"   means  a  Party   and  its   Subsidiaries,
collectively.

     9.2  "Applicable  Contract" means any Contract (a) under which any Party or
any of its Subsidiaries has or may acquire any rights, (b) under which any Party
or any of its  Subsidiaries  has or may  become  subject  to any  obligation  or
Liability,  or (c) by which any Party or any of its  Subsidiaries  or any of the
assets owned or used by it is or may become bound.

     9.3 "Common Stock" means Biomune's Common Stock, $.0001 par value.

     9.4  "Contract"  means any agreement,  contract,  obligation,  promise,  or
undertaking  (whether  written or oral and whether  express or implied)  that is
legally binding.

     9.5  "Environmental  Laws"  means any and all Laws,  permits,  concessions,
grants, franchises,  licenses,  agreements or governmental restrictions relating
to  pollution  and the  protection  of the  environment  or the  release  of any
materials into the  environment,  including but not limited to those relating to
hazardous  substances or wastes, air emissions and discharges to waste or public
systems.

     9.6 "Exchange Act" means the  Securities  Exchange Act of 1934, as amended,
or any  successor  federal  statute,  and the rules and  regulations  of the SEC
thereunder,  all as the same  shall be in  effect at the  time.  Reference  to a


                                       43
<PAGE>


particular section of the Exchange Act shall include reference to the comparable
section, if any, of any successor federal statute.

     9.7 "GAAP" means United States generally accepted accounting  principles as
in effect from time to time.

     9.8  "Government  Entity"  means  any  supranational,   national,  foreign,
federal,  state or local judicial,  legislative,  executive,  administrative  or
regulatory body or authority.

     9.9 "Hazardous  Material" means any and all pollutants,  toxic or hazardous
wastes or any other  substances,  including but not limited to biomedical waste,
that  might  pose a hazard to  health or  safety,  the  removal  of which may be
required  or the  generation,  manufacture,  refining,  production,  processing,
treatment, storage, handling, transportation,  transfer, use, disposal, release,
discharge,  spillage, seepage, or filtration of which is or shall be restricted,
prohibited or penalized by any applicable Law  (including,  without  limitation,
asbestos, urea formaldehyde foam insulation and polychlorinated biphenyls).

     9.10  "Knowledge"  or "to Know" means  actual  knowledge  after  reasonable
investigation.

     9.11 "Laws" includes any foreign,  federal,  state, or local law,  statute,
rule,  regulation,  Order or other  restriction of any court or other Government
Entity.

     9.12 "Liability" means any debt, liability or obligation,  whether known or
unknown,  asserted or unasserted,  accrued,  absolute,  contingent or otherwise,
whether due or to become due.

     9.13  "Major  Supplier"  means a supplier  of $50,000 or more in  materials
and/or  services  to a Party or any of its  Subsidiaries  during the last twelve
months.

     9.14 "Material  Adverse Effect" or "Materially  Adversely Affect" means any
event or  change  which has a  material  adverse  effect on (a) the  properties,
business, prospects,  operations, earnings, assets, liabilities or the condition
(financial  or  otherwise)  of a party  taken as a whole,  whether or not in the
ordinary  course  of  business,  (b) the  ability  of a  party  to  perform  its
obligations  under this Agreement or (c) the validity or  enforceability of this
Agreement.

     9.15  "Ordinary  Course of Business" -- an action taken by a Person will be
deemed to have been taken in the "Ordinary Course of Business" only if: (a) such
action is  consistent  with the past  practice  of such Person  (including  with
respect to quality and  frequency)  and is taken in the  ordinary  course of the
normal day-to-day operations of such Person; and (b) such action is not required
to be  authorized  by the board of directors of such Person (or by any Person or
group of Persons exercising similar authority).



                                       44
<PAGE>

     9.16  "Organizational  Documents"  means the  articles  or  certificate  of
incorporation and the bylaws of a corporation; the partnership agreement and any
statement  of  partnership  of a general  partnership;  the limited  partnership
agreement  and  the  certificate  of  the  limited   partnership  of  a  limited
partnership; any charter or similar document adopted or filed in connection with
the creation,  formation,  or organization of a Person; and any amendment to any
of the foregoing.

     9.17 "Person" means any individual,  corporation  (including any non-profit
corporation),  general or limited partnership,  limited liability company, joint
venture, estate, trust, association,  organization, labor union, or other entity
or Government Entity.

     9.18  "Promissory  Note" means that  certain  note (or notes)  delivered by
Donlar in payment for the Common Stock issued under that certain Stock  Purchase
Agreement between Donlar and Biomune dated August 7, 2000.

     9.19 "SEC" means the United States Securities and Exchange Commission.

     9.20 "Securities Act" shall mean the Securities Act of 1933, as amended, or
any  successor  federal  statute,  and  the  rules  and  regulations  of the SEC
thereunder,  all as the same  shall be in  effect at the  time.  Reference  to a
particular  section  of  the  Securities  Act  shall  include  reference  to the
comparable section, if any, of any successor federal statute.

     9.21  "Series H  Preferred  Stock"  means the Series H  Preferred  Stock of
Biomune, as created by the Series H Preferred Stock.

     9.22 "Stock  Incentive  Plans" means  Biomune's 1992 Stock  Incentive Plan,
1993 Stock  Incentive Plan, 1995 Stock Incentive Plan, 1996 Stock Incentive Plan
and 1999 Stock  Incentive  Plan, and any other stock  incentive plans adopted by
Biomune.

     9.23  "Subsidiary"  with  respect to any  Person  (the  "Owner")  means any
corporation or other Person of which  securities or other  interests  having the
power to elect a  majority  of that  corporation's  or other  Person's  board of
directors or similar governing body, or otherwise having the power to direct the
business and policies of that corporation or other Person (other than securities
or other  interests  having such power only upon the  happening of a contingency
that has not occurred) are held by the Owner or one or more of its Subsidiaries.


                           (Signature page to follow.)




                                       45
<PAGE>





         IN WITNESS WHEREOF,  Biomune and Donlar have executed this Agreement as
of the day and year first above written.

                                                     BIOMUNE SYSTEMS, INC.


                                                     By:
                                                     Title:


                                                     DONLAR CORPORATION


                                                     By:
                                                     Title:



                                       46
<PAGE>



                                    EXHIBIT A

                        Terms of Series H Preferred Stock


Each  share  of  Series  H  Preferred  Stock  shall  have a  $10.00  liquidation
preference.

The Series H Preferred  Stock will be  convertible  by the  Company  into Common
Stock at any time after the first anniversary of Closing at a ratio of one share
of Common Stock for every share of Series H Preferred Stock.

The Series H Preferred  Stock will be  convertible  by the holders  prior to the
first anniversary of the Closing upon a "Sale of the Company."

The Series H Preferred Stock will not have voting rights.







                                       47



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