Document:

Exhibit 10.3

                              EMPLOYMENT AGREEMENT

            EMPLOYMENT AGREEMENT made this 8th day of September, 2000, by and
between EDG CAPITAL, INC., New York corporation, whose name will be changed to
Isotope Solutions Group, Inc. (the "Company") and SHRAGA D. ARANOFF (the
"Executive").

                              W I T N E S S E T H :

            WHEREAS, entering into this Agreement is a condition of closing
under a certain Agreement and Plan of Merger, dated the date hereof (the "Merger
Agreement"), pursuant to which MRM Merger Sub, Inc., a New York corporation, and
a wholly-owned subsidiary of EDG ("Merger Sub"), merged (the "Merger") with and
into the Molecular Radiation Management, Inc. ("MRM");

            WHEREAS, MRM shall be the successor and surviving corporation in the
Merger and shall become a wholly-owned subsidiary of the Company;

            WHEREAS, the Executive was employed by MRM and the Company wishes to
ensure the continued employment of the Executive with the Company and the
Executive wishes to accept such employment upon the terms and condition
hereinafter set forth;

            NOW, THEREFORE, in consideration of the premises and other good and
valuable consideration, receipt of which is hereby acknowledged, the parties
hereto agree as follows:

      1. Employment

            The Company agrees to employ the Executive during the Term specified
in paragraph 2, and the Executive agrees to accept such employment, upon the
terms and conditions hereinafter set forth.

      2. Term

            Subject to paragraphs 6 and 7, the Executive's employment by the
Company shall be for a term commencing on the date hereof and expiring on the
close of business on September 7th, 2003 (the "Initial Term"); provided,
however, the Executive's employment by the Company shall then continue for an
indefinite period thereafter unless and until either party shall give to the
other ninety (90) days advance written notice of expiration of the term
specifically stating the date on which the Executive's employment by the Company
shall terminate (a "Notice of Termination") (the Initial Term and the period, if
any, thereafter, during which the Executive's

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employment shall continue are collectively referred to as the "Term"). Any
Notice of Termination given under this paragraph 2 shall specify the date of
expiration (which may not be earlier than the close of business on September
8th, 2003 and may be given at any time on or after June 8th, 2003). The date on
which the Executive ceases to be employed by the Company, regardless of the
reason therefore, is referred to in this Agreement as the "Date of Termination".

      3. Duties and Responsibilities

            (a) During the Term, the Executive shall have the position of (i)
Chief Operating Officer, Vice President and Secretary of the Company. The
Executive shall report directly to the Chief Executive Officer of the Company
(the "CEO") at such times and in such detail as he shall reasonably require
consistent with the Executive's position.

            (b) The Executive shall have all of the powers, duties and
responsibilities customary to his office as is reasonably necessary to the
operations of the Company and its subsidiaries as may be assigned to him from
time to time by or under the authority of the CEO consistent with his position.

            (c) The Executive's employment by the Company shall be full-time and
exclusive, and during the Term, the Executive agrees that he will devote his
business time and attention and all his skill and ability to promote the
interests of the Company, and work with other employees of the Company in a
competent and professional manner. Notwithstanding the foregoing, the Executive
shall be permitted to engage in charitable and civic activities, manage his
personal investments and serve on advisory boards or boards of directors of
other entities, provided that such activities do not involve an entity which
transacts business with the Company or engages in business competitive with that
conducted by the Company (or, if such entity does transact business with the
Company, or does engage in a competitive business, it is a publicly held
corporation of which the Executive owns less than 5% of the outstanding shares).

            (d) During the Term, the Executive's services hereunder shall be
performed at the offices of the Company in Garden City, New York, subject to
necessary and reasonable travel requirements of his position and duties
hereunder.

      4. Compensation.

            As compensation for his services hereunder, the Company shall pay
the Executive the following:

            (a) Base Salary. An annualized base salary of $125,000 (the "Base
Salary"). The Base Salary shall be paid in accordance with the Company's normal
payroll practices. The Base Salary shall be reviewed not less frequently than
annually for the purpose of making increases at the reasonable discretion of the
CEO taking into consideration the size and growth of the Company's revenues and
the Executive's accomplishments; provided, however, that such increases shall be
no less than five (5%) percent annually. The Base Salary as from time to time in
effect may not be decreased without the Executive's consent.

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            (b) Cash Bonus. The Executive shall be eligible for an annual cash
bonus based on performance.

            (c) Grant of Stock Options. The Executive shall be entitled to
receive, subject to (i) the approval of the Company's 2000 Long term Incentive
Plan (the "Stock Option Plan") by the shareholders and the Board of Directors of
the Company and (ii) the approval of the option awards by the Board or a
committee thereof, 100,000 stock options to purchase shares of common stock of
the Company, at a price equal to $.8065 per share of common stock (the "Initial
Options"). The Executive will also be eligible to receive additional grants of
options under the Company's Stock Option Plan (the "Additional Options"; and
together with the Initial Options, the "Options") and additional cash bonuses,
in each case at the discretion of the CEO and the Board of Directors of the
Company (the "Board").

      5. Expenses; Fringe Benefits

            (a) The Company agrees to pay or to reimburse the Executive for all
business or entertainment expenses incurred during the Term in the performance
of his services hereunder in accordance with the policy of the Company as from
time to time in effect. The Executive shall provide to the Company any and all
statements, bills or receipts evidencing the travel or out-of-pocket expenses
for which the Executive seeks payment or reimbursement.

            (b) During the Term, the Executive and, to the extent eligible, his
dependents, shall be eligible to participate in and receive all benefits under
any welfare benefit plans and programs (including without limitation, medical,
hospitalization, dental, prescription, disability, group life (including
accidental death and dismemberment) and business travel insurance plans and
programs) provided by the Company to its employees generally and (without
duplication) to its senior executives generally.

            (c) During the Term, the Executive shall be eligible to participate
in all retirement plans and programs (including without limitation any profit
sharing/401(k) plan) provided by the Company to its employees generally and
(without duplication) to its senior executives generally. In addition, during
the Term, the Executive shall be entitled to receive fringe benefits and
perquisites in accordance with the plans, practices, programs and policies of
the Company from time to time in effect which are made available to its
employees generally and (without duplication) to the senior executives of the
Company generally.

            (d) The Company shall make all payments with respect to leasing or
owning, maintaining, operating and insuring an automobile, including the costs
of any telecommunications equipment provided therein.

            (e) The Executive shall be entitled to four weeks paid vacation
annually and shall be entitled to as many holidays, sick days and personal days
as are in accordance with the Company's policy then in effect for its senior
executives generally.

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      6. Termination

            (a) The Company by direction of the Board shall be entitled to
terminate the Term and to discharge the Executive for "Cause" (as defined below)
effective upon the Company's compliance with the following: The Executive shall
be given written notice of the Company's intention to terminate him for Cause
(the "Cause Notice"), such notice to state in detail the specific conduct of the
Executive that it considers to constitute Cause and the specific provision(s) of
this Agreement on which it relies, and stating the date, time and place of a
special meeting of the Board to be held for the specific and sole purpose of
considering the termination of the Executive for Cause. Such meeting shall take
place not less than ten and not more than twenty business days after the
Executive receives the Cause Notice. At such special meeting, the Executive,
represented by counsel of his choosing, shall have the opportunity to be heard.
The Executive's termination for Cause shall be effective when and if a
resolution is duly adopted at such special meeting of the Board by a majority
vote (excluding the vote of the Executive) of the Board. The term "Cause" shall
be limited to the following grounds:

                  (i) the Executive's willful failure or refusal to materially
      perform his duties and responsibilities as set forth in paragraph 3
      hereof, if such failure or refusal is not cured (if curable) within 20
      days after written notice thereof to the Executive by the Company;

                  (ii) the willful misappropriation of the funds or property of
      the Company or any subsidiary;

                  (iii) the use of alcohol or illegal drugs, materially
      interfering with the performance of the Executive's obligations under this
      Agreement, continuing after written warning; and

                  (iv) the conviction in a court of law of, or entering a plea
      of guilty or no contest to, any felony or any crime involving moral
      turpitude, dishonesty or theft.

If being understood that no act or failure to act on the part of the Executive
shall be considered "willful" unless it is done, or omitted to be done, by the
Executive in bad faith or without reasonable belief that the Executive's action
or omission was in the best interests of the Company.

            (b) The Executive shall be entitled to terminate this Agreement for
"Good Reason" (as defined below) at any time during the Term by written notice
to the Company stating in detail the specific conduct of the Company or event
that he considers to constitute Good Reason and the specific provision(s) of
this Agreement on which he relies. "Good Reason" means:

                  (i) the assignment to the Executive of any duties inconsistent
      in any respect with the Executive's position (including status, offices,
      titles and reporting requirements), authority, duties or responsibilities
      as contemplated by paragraph 3 above or any other action by the Company
      which results in a diminution in such position,

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      authority, duties or responsibilities, other than an isolated,
      insubstantial and inadvertent action that is not taken in bad faith and is
      remedied by the Company within 10 days after receipt of notice thereof
      given by the Executive;

                  (ii) the Company's requiring the Executive to be based at any
      office or location outside the New York City metropolitan area (unless
      otherwise consented to by the Executive in writing);

                  (iii) any failure by the Company to comply with any of its
      obligations under paragraph 4 of this Agreement and which is not remedied
      by the Company within five days after receipt of notice thereof given by
      the Executive;

                  (iv) any action by the Company that reduces the fringe
      benefits or perquisites provided to the Executive or the Executive's
      eligibility to participate in any employee benefit plan of the Company
      unless the Executive is provided with equal or more favorable fringe
      benefits, perquisites or employee benefits, as the case may be;

                  (v) any material breach of any other provision not covered by
      any other clause of this paragraph 6(b) which is not remedied by the
      Company within 10 days after receipt of notice thereof given by the
      Executive;

                  (vi) the Executive is removed as a member of the Board; or

                  (vii) a Change in Control (as defined on Annex I hereto).

            (c) In the event of (1) the termination of the Executive's
employment by the Company for Cause; (2) the Executive's voluntary resignation
pursuant to a Notice of Termination under paragraph 2 above (other than for Good
Reason); or (3) the termination of the Executive's employment by the Company in
connection with the Executive's death or "Disability" (as defined in paragraph 7
below), the Executive shall be entitled to:

                  (i) any and all unpaid Base Salary and accrued vacation time
      through, and any unpaid reimbursable expenses outstanding as of, the Date
      of Termination;

                  (ii) any unpaid Cash Bonus under paragraph 4(b) for any
      calendar year preceding the year in which the Date of Termination occurs
      (the "Termination Year"), payable at the time such cash bonus is otherwise
      payable under paragraph 4(b) hereof;

                  (iii) except for a termination for Cause, a pro-rata portion
      of any unpaid Cash Bonus under paragraph 4(b) for the Termination Year
      (had the Executive's employment continued hereunder during the entire
      Term) based upon the number of days in such year that he was employed by
      the Company, payable at the time it is otherwise payable under paragraph
      4(b) hereof as if the Executive's employment had continued hereunder
      during the entire Term (which pro-rata amount shall be no less than the

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      equivalent pro-rata calculation for Cash Bonus paid for the year prior to
      the Termination Year); and

                  (iv) any and all benefits, if any, that had accrued to the
      Executive through the Date of Termination under the plans and programs
      described in paragraphs 5(b) and 5(c) above, or any other applicable plans
      and programs in which he participated as an employee of the Company, in
      the manner and in accordance with the terms of such plans and programs.

            (f) In the event of (1) a termination of the Executive's employment
by the Company for any reason other than for Cause, the Executive's death or
Disability; (2) a termination of the executive's employment pursuant to a Notice
of termination under paragraph 2 above; or (3) the termination of the
Executive's employment by the Executive for Good Reason, the Executive shall be
entitled to continue to receive from the Company, the following:

                  (i) severance compensation as follows: if the Date of
      Termination occurs during the Initial Term, his applicable salary
      compensation when otherwise payable through December 7th, 2003; if the
      Date of Termination occurs after the Initial Term, his applicable salary
      compensation when otherwise payable through the three-month anniversary of
      the Date of Termination (the applicable period during which the Executive
      is entitled to severance compensation is referred to herein as the
      "Severance Period");

                  (ii) any unpaid Cash Bonus under paragraph 4(b) for any
      calendar year preceding the Termination Year, payable at the time such
      cash bonus is otherwise payable under paragraph 4(b) hereof;

                  (iii) any Cash Bonus under paragraph 4(b) for the Termination
      Year and each year during the Severance Period, payable at the time it is
      otherwise payable under paragraph 4(b) hereof as if the Executive's
      employment had continued hereunder during the entire Severance Period
      (which Cash Bonus shall be no less than the Cash Bonus paid with respect
      to the year prior to the Termination Year); and

                  (iv) any unpaid reimbursable expenses and accrued vacation
      time outstanding as of the Date of Termination;

                  (v) all benefits, if any, that had accrued to the Executive
      through the Date of Termination under the plans and programs described in
      paragraphs 5(b) and 5(c) above, or any other applicable benefit plans and
      programs in which he participated as an employee of the Company, in the
      manner and in accordance with the terms of such plans and programs;

                  (vi) continued participation on the same basis (including
      without limitation, cost contributions) as the other senior executives of
      the Company in all, medical, dental, hospitalization, prescription,
      disability and life insurance coverage (such benefits collectively called
      the "Continued Plans") in which he was participating on the

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      Date of Termination (as such Continued Plans are from time to time in
      effect at the Company) until the earlier of (x) the end of the Severance
      Period or (y) the date, or dates, he is entitled to receive coverage and
      benefits under the same type of plan of a subsequent employer; provided,
      however, if the Executive is precluded from continuing his participation
      in any Continued Plan, then the Company will be obligated to pay him the
      economic equivalent of the benefits provided under the Continued Plan in
      which he is unable to participate, for the period specified above, plus an
      amount equal to the tax, if any, payable by him thereon, it being
      understood that the economic equivalent of a benefit foregone shall be
      deemed the average cost in the State of New York that would be incurred by
      the Executive in obtaining such benefit himself on an individual basis,
      and payment of such after-tax economic benefit shall be made quarterly in
      advance; and

                  (vi) all Options shall become immediately exercisable.

The Company's obligation to make the payments provided for in this Agreement and
otherwise to perform its obligations hereunder shall not be affected by any
setoff, counterclaim, recoupment, defense or other claim, right or action which
the Company and/or any of its affiliates may have against the Executive. In no
event shall the Executive be obligated to seek other employment or take any
other action by way of mitigation of the amounts payable to the Executive under
any of the provisions of this Agreement and such amounts shall not be reduced
whether or not the Executive obtains other employment.

      7. Disability; Death

            In the event the Executive shall be unable to perform his duties
hereunder by virtue of illness or physical or mental incapacity or disability
(from any cause or causes whatsoever) in substantially the manner and to the
extent required hereunder prior to the commencement of such disability (all such
causes being herein referred to as "Disability") and the Executive shall fail to
perform such duties for 150 consecutive days, the Company shall have the right
to terminate the Executive's employment hereunder as at the end of any calendar
month during the continuance of such Disability upon at least 90 days' prior
written notice to him. In the event of the Executive's death, the Date of
Termination shall be ninety days from the date of such death.

      8. Covenants Regarding Non-Solicitation and Confidential Information

            (a) The Executive agrees that it is reasonable and necessary for the
protection of the confidential information, goodwill and business of the Company
that the Executive agrees that during the Term and for a one year thereafter he
shall not render any services to, or engage in any business in the New York
metropolitan area, which is engaged in the business of the same nature as or
competitive with the Company; provided, however, that nothing contained in this
paragraph shall be deemed to prevent the undersigned from owing less than 5% of
the shares of any publicly held corporation engaged in any such business.
Notwithstanding anything to the contrary contained in this Agreement, this
paragraph 8(a) shall be null and void and have no force or effect in the event
that the Executive's employment is terminated by the Company for any reason
other than for Cause, the Executive's death or Disability, or pursuant to a
Notice of

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Termination; or the Executive's employment is terminated by the Executive for
Good Reason; or the Company breaches any of its obligations to make any payments
or provide any benefits under paragraph 6(d) above.

            (b) In the course of the Executive's employment with the Company he
will acquire and have access to confidential or proprietary information about
the Company and/or its clients, including but not limited to, trade secrets,
financial information and records, computer software programs, contracts between
the Company and its clients, marketing and/or creative policies and ideas,
methods of operations, and financial or business projections of the Company. The
foregoing shall be collectively referred to as "confidential information". The
Executive is aware that the confidential information is not readily available to
the public and accordingly, the Executive also agrees that he will not at any
time disclose to anyone any confidential information, or utilize such
confidential information for his own benefit, or for the benefit of third
parties without the prior written consent of the Company. The term "confidential
information" does not include information which (i) becomes generally available
to the public other than by breach of this provision, (ii) is already in the
possession of the Executive as of the date hereof or (iii) the Executive learns
from a third party who is not under an obligation of confidence to the Company
or a client of the Company. In the event that the Executive becomes legally
required to disclose any confidential information, he will be permitted to
furnish only that portion of the confidential information which he is legally
required to disclose and, at the Company's expense, will cooperate with the
efforts of the Company to obtain a protective order or other reliable assurance
that confidential treatment will be accorded the confidential information.

      9. Indemnification

            (a) The Company agrees that if the Executive is made a party, or is
threatened to be made a party, to any action, suit or proceeding, whether civil,
criminal, administrative or investigative (a "Proceeding"), by reason of the
fact that he is or was a director, officer or employee of the Company and/or one
of its subsidiaries or is or was serving at the request of the Company as a
director, officer, member, employee or agent of another corporation,
partnership, joint venture, trust or other enterprise, including service with
respect to employee benefit plans, whether or not the basis of such Proceeding
is the Executive's alleged action in an official capacity while serving as a
director, officer, member, employee or agent, the Executive shall be indemnified
and held harmless by the Company to the fullest extent permitted or authorized
by the Company's certificate of incorporation or by-laws or, if greater, by the
laws of the State of New York, against all cost, expense, liability and loss
(including, without limitation, attorney's fees, judgments, fines, ERISA excise
taxes or penalties and amounts paid or to be paid in settlement) reasonably
incurred or suffered by the Executive in connection therewith, and such
indemnification shall continue as to the Executive even if he has ceased to be a
director, member, employee or agent of the Company or other entity and shall
inure to the benefit of the Executive's heirs, executors and administrators. The
Company shall advance to the Executive all reasonable costs and expenses
incurred by him in connection with a Proceeding within 20 days after receipt by
the Company of a written request for such advance. Such request shall include an
undertaking by the Executive to repay the amount of such advance if it shall
ultimately be determined that he is not entitled to be indemnified against such
costs and expenses.

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            (b) Neither the failure of the Company (including the Board,
independent legal counsel or stockholders) to have made a determination prior to
the commencement of any proceeding concerning payment of amounts claimed by the
Executive under paragraph 9(a) above that indemnification of the Executive is
proper because he has met the applicable standard of conduct, nor a
determination by the Company (including the Board, independent legal counsel or
stockholders) that the Executive has not met such applicable standard of
conduct, shall create a presumption that the Executive has not met the
applicable standard of conduct.

      10. Enforceability

            The failure of any party at any time to require performance by
another party of any provision hereunder shall in no way affect the right of
that party thereafter to enforce the same, nor shall it affect any other party's
right to enforce the same, or to enforce any of the other provisions in this
Agreement; nor shall the waiver by any party of the breach of any provision
hereof be taken or held to be a waiver of any subsequent breach of such
provision or as a waiver of the provision itself.

      11. Assignability; Binding Nature

            This Agreement shall be binding upon and inure to the benefit of the
parties and their respective successors, heirs (in the case of the Executive)
and assigns. No rights or obligations of the Company under this Agreement may be
assigned or transferred by the Company except that such rights or obligations
may be assigned or transferred pursuant to a merger or consolidation in which
the Company is not the continuing entity, or the sale or liquidation of all or
substantially all of the assets of the Company, provided that the assignee or
transferee is the successor to all or substantially all of the assets of the
Company and such assignee or transferee assumes the liabilities, obligations and
duties of the Company, as contained in this Agreement, either contractually or
as a matter of law. The Company further agrees that, in the event of a sale of
assets or liquidation as described in the preceding sentence, it shall take
whatever action it legally can in order to cause such assignee or transferee to
expressly assume the liabilities, obligations and duties of the Company
hereunder. No rights or obligations of the Executive under this Agreement may be
assigned or transferred by the Executive other than his rights to compensation
and benefits, which may be transferred only by will or operation of law, or as
provided in paragraph 12 below.

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      12. Beneficiaries/References

            The Executive shall be entitled to select (and change, to the extent
permitted under any applicable law) a beneficiary or beneficiaries to receive
any compensation or benefit payable hereunder following the Executive's death by
giving the Company written notice therefor. In the event of the Executive's
death or a judicial determination of his incompetence, reference in this
Agreement to the Executive shall be deemed, where appropriate, to refer to his
beneficiary, estate or other legal representative.

      13. Modification

            This Agreement may not be orally canceled, changed, modified or
amended, and no cancellation, change, modification or amendment shall be
effective or binding, unless in writing and signed by the parties to this
Agreement.

      14. Severability; Survival

            In the event any provision or portion of this Agreement is
determined to be invalid or unenforceable for any reason, in whole or in part,
the remaining provisions of this Agreement shall nevertheless be binding upon
the parties with the same effect as though the invalid or unenforceable part had
been severed and deleted. The respective rights and obligations of the parties
hereunder shall survive the termination of the Executive's employment to the
extent necessary to the intended preservation of such rights and obligations.

      15. Notice

            Any notice, request, instruction or other document to be given
hereunder by any party hereto to another party shall be in writing and shall be
deemed effective (a) upon personal delivery, if delivered by hand, or (b) three
days after the date of deposit in the mails, postage prepaid if mailed by
certified or registered mail, (c) upon the deposit in the mails of a hard copy
if sent by facsimile transmission (if electronically confirmed), or (d) on the
next business day if sent by prepaid overnight courier service, and in each
case, addressed as follows:

            If to the Executive:

            Mr. Shraga D. Aranoff
            144-38 72nd Road
            Flushing, New York 11367

            If to the Company:

            EDG Capital, Inc.
            (whose name will be changed to Isotope Solutions Group, Inc.)
            700 Stewart Avenue
            Garden City, New York 11530

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            Attention: President
            Fax: 516-222-5198

Any party may change the address to which notices are to be sent by giving
notice of such change of address to the other party in the manner herein
provided for giving notice.

      16. Applicable Law

            This Agreement shall be governed by and construed in accordance with
the laws of State of New York without application of conflict of law provisions
applicable therein.

      17. Entire Agreement

            This Agreement and the Annex hereto represent the entire agreement
between the Company and the Executive with respect to the subject matter hereof,
and all prior agreements, plans and arrangements relating to the employment of
the Executive by the Company are nullified and superseded hereby.

      18. Headings

            The headings contained in this Agreement are for reference purposes
only, and shall not affect the meaning or interpretation of this Agreement.

      19. Counterparts

            This Agreement may be executed in two counterparts or by facsimile
transmission, both of which taken together shall constitute one instrument.

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

                              EDG CAPITAL, INC.

                              By: /s/ Jack Schwartzberg
                                  ----------------------------------
                                  Name: Jack Schwartzberg
                                  Title: President

                                  /s/ Shraga D. Aranoff
                                  ----------------------------------
                                  Shraga D. Aranoff

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                                                 Annex I to Employment Agreement

      For purposes of this Agreement, a "Change in Control" shall mean the
occurrence of any one of the following events:

            (i) The acquisition, after the effective date of the Option Plan, by
      an individual, entity or group (within the meaning of Section 13(d)(3) or
      14(d)(2) of the Securities Exchange Act of 1934, as amended (the "Exchange
      Act")) of beneficial ownership (within the meaning of Rule l3d-3
      promulgated under the Exchange Act) of 50% or more of either (a) the
      shares of the voting common stock of the Company (the "Common Stock"), or
      (b) the combined voting power of the voting securities of the Company
      entitled to vote generally in the election of directors (the "Voting
      Securities"); provided, however, that the following acquisitions shall not
      constitute a Change of Control: (x) any acquisition by any employee
      benefit plan (or related trust) sponsored or maintained by the Company or
      any subsidiary, (y) any acquisition by any underwriter in connection with
      any firm commitment underwriting of securities to be issued by the
      Company, or (z) any acquisition by any corporation or any other entity if,
      immediately following such acquisition, more than 50% of the then
      outstanding shares of common stock or common ownership interests and the
      combined voting power of the then outstanding voting securities of such
      corporation or common ownership interests of such other entity (entitled
      to vote generally in the election of directors or other managers), is
      beneficially owned, directly or indirectly, by all or substantially all of
      the individuals and entities who, immediately prior to such acquisition,
      were the beneficial owners of the Common Stock and the Voting Securities
      in substantially the same proportions, respectively, as their ownership,
      immediately prior to such acquisition, of the Common Stock and Voting
      Securities; or

            (ii) Individuals who, as of the effective date of the Option Plan,
      constitute the Board (the "Incumbent Board") cease thereafter for any
      reason to constitute at least a majority of the Board; provided, however,
      that any individual becoming a director subsequent to the effective date
      of the Option Plan whose election, or nomination for election by the
      Company's shareholders, was approved by at least two-thirds of the
      directors then serving and comprising the Incumbent Board shall be
      considered as though such individual were a member of the Incumbent Board,
      but excluding, for this purpose, any such individual whose initial
      assumption of office occurs as a result of either an actual or threatened
      election contest (as such terms are used in Rule 14a- 11 of Regulation 14A
      promulgated under the Exchange Act) or other actual or threatened
      solicitation of proxies or consents; or

            (iii) Approval by the shareholders of the Company of, or the
      occurrence of, a reorganization, merger or consolidation, other than a
      reorganization, merger or

<PAGE>

      consolidation with respect to which all or substantially all of the
      individuals and entities who were the beneficial owners, immediately prior
      to such reorganization, merger or consolidation, of the Common Stock and
      Voting Securities beneficially own, directly or indirectly, immediately
      after such reorganization, merger or consolidation more than 50% of the
      then outstanding common stock or common ownership interests and voting
      securities or voting ownership interests (entitled to vote generally in
      the election of directors or other managers) of the corporation or other
      entity resulting from such reorganization, merger or consolidation in
      substantially the same proportions as their respective ownership,
      immediately prior to such reorganization, merger or consolidation, of the
      Common Stock and the Voting Securities; or

            (iv) Approval by the shareholders of the Company of, or the
      occurrence of, (a) a complete liquidation or substantial dissolution of
      the Company, or (b) the sale or other disposition of all or substantially
      all of the assets of the Company, other than (i) to a subsidiary,
      wholly-owned, directly or indirectly, by the Company, or (ii) pursuant to
      a transaction with respect to which all or substantially all of the
      individuals and entities who were the beneficial owners, immediately prior
      to such transaction, of the Common Stock and the Voting Securities
      beneficially own, directly or indirectly, immediately after such
      transaction, more than 50% of the then outstanding common stock or common
      ownership interests and voting securities or voting ownership interests
      (entitled to vote generally in the election of directors or other
      managers) of the corporation or other business entity acquiring such
      assets in substantially the same proportions as their respective
      ownership, immediately prior to such transaction, of the Common Stock and
      the Voting Securities; or

            (v) The occurrence of any event (not covered by clauses (i) through
      (iv) above) which would be required to be reported by the Company in
      response to Items 1 or 2 of Form 8-K under the Exchange Act.EXHIBIT 10.4

                     PRACTICE MANAGEMENT SERVICES AGREEMENT

                                 BY AND BETWEEN

                          STANLEY E. ORDER, M.D., P.C.

                                       AND

                      MOLECULAR RADIATION MANAGEMENT, INC.

                          DATED AS OF DECEMBER 1, 1997

<PAGE>

                     PRACTICE MANAGEMENT SERVICES AGREEMENT

      AGREEMENT, made as of December 1, 1997, between STANLEY E. ORDER, M.D.,
P.C., a professional corporation organized under the laws of the State of New
York (the `P.C.") and MOLECULAR RADIATION MANAGEMENT, INC., a New York
corporation, (the "Company")

                                    RECITALS

      WHEREAS, the Company wishes to provide comprehensive medical practice
management services, including the leasing or subleasing of space and equipment,
consulting, billing, collection and related services (collectively, the
"Practice Management Services") and financial services to the P.C.;

      WHEREAS, the P.C. desires that the Company provide Practice Management
Services and financial services to the P.C.; and

      WHEREAS, the P.C. and the Company wish to set forth, as of the date
hereof, their respective rights and obligations as they relate to the provision
of such Practice Management Services and financial services.

      NOW, THEREFORE, in consideration of mutual covenants and other good and
valuable consideration contained herein, the parties agree as follows:

      1. RECITALS

      1.1 The Recitals set forth above are incorporated herein as though set
forth in their entirety.

      2. COMPREHENSIVE PRACTICE MANAGEMENT SERVICES

      During the term of this Agreement, the Company will provide to the P.C. a
<PAGE>

comprehensive range of non-medical Practice Management Services, all as
described in this Agreement, which the parties agree are sufficient to enable
the P.C. to conduct its medical practice (hereinafter the "P.C.'s Practice") and
the P.C. shall retain the Company on an exclusive basis (exclusive as to the
P.C. itself as well as to any other person or entity) to provide such services.
For purposes of clarification, it is understood that all services, of any nature
whatsoever including, without limitation, the providing of clerical,
managerial,3

technological consulting and receivables processing services, that are to be
provided by the Company to the P.C., whether or not specifically described in
this Agreement, shall not include services which relate to the providing of
medical services.

            2.1 Space

            (a) The Company will obtain for use by the P.C., by May 1, 1997, a
research laboratory (the "Lab"), equipped as set forth in Paragraph 2.2, for the
continued development of the Technology (as defined herein)

            (b) The Company will obtain for use by the P.C. space in a clinical
or hospital department and/or numerous sites or establish a site for the private
practice of medicine for the treatment of patients utilizing the Technology, or
other Technology any such space to be reasonably satisfactory to the PC (the
"Treatment Space")

            (c) To the extent that the Lab or Treatment Space, and any space
which Company may provide to the P.C. in the future, is available to the Company
as owner, lessee, sublessee or assignee (all such space being hereinafter called
"Licensed Space"), the P.C. agrees that all of the obligations contained in
each such lease, sublease or assignment (an "Overlease") which are imposed upon
the Company will be assumed by the P.C. which hereby agrees to assume the same.
The P.C.

                                       2
<PAGE>

covenants and agrees to fully and faithfully perform the terms and conditions of
the Overlease and this Agreement. The P.C. shall not do or cause to be done or
suffer or permit any act to be done which would or might cause any of the
Overlease or the rights of the Company, as lessee, sub-lessee or assignee, as
the case may be, under the overlease, to be endangered, canceled, terminated,
forfeited, amended, modified or surrendered, or which would or might cause the
Company to be in default thereunder or liable for any damage, claim or penalty.
The Company shall have no obligation to take any action to enforce or compel
performance by any of its landlords and/or lessors and/or assignors of any
provision of any Overlease or other agreement and the Company shall not be
liable to the P.C. in the event of its landlords' or lessors' or assignors'
default or failure to perform any obligations. The P.C. agrees that if there is
any conflict between any of the Overlease and the provisions of this Agreement
which would permit the P.C. to door cause to be done or suffer or permit any act
or thing to be done which is prohibited by any of the Overlease, then the
provisions of the respective Overlease shall prevail.

            (e) Upon the termination of an Overlease, the Company will either
(i) advise the P.C. that it will not provide space to the P.C., in which event
that P.C. shall be free to enter into such leases for space as it, in its sole
discretion, shall determine or (ii) advise the P.C. that it will provide space
to the P.C. in which event the Company will either provide the P.C. with the
space now provided under an Overlease or select and provide to the P.C.
comparable Licensed Space at a comparable location.

            (f) The Company's provision of Licensed Space to the P.C. shall
include:

                  (i)   electricity and water;

                  (ii)  heat or air conditions, during the appropriate seasons,
                        in conformity with any local, state or federal
                        regulations; and

                  (ii)  janitorial services as is customary in the location of
                        each such Licensed Space.

                                       3
<PAGE>

      2.2 Furnishings and Equipment

      (a) The Company will arrange for the furnishing of the Lab and Treatment
Space with furniture and fixtures which are customary for such spaces' intended
uses, as more fully described in a Furnishings Schedule annexed hereto as the
same may hereafter be amended from time to time (the "Furnishings")

      (b) The Furnishings provided by the Company shall remain at all times the
property of the Company whether owned or leased by the Company and the P.C.
shall not pledge, lend, create a security interest in, assign, sublease or part
with possession of the Furnishings or any part thereof or attempt in any other
manner to altar, modify, depose of the Furnishings or remove the Furnishings or
any part thereof from the Lab or Treatment Space, without the Company's prior
written consent, or take any other action which would adversely affect the
Company's title to or interest in the Furnishings. The P.C. will promptly
discharge, at its own expense, any lien or encumbrance on the Furnishings which
shall arise, unless same shall have been created by the Company. The P.C. agrees
to sign a UCC Form 1 Financing Statement and any applicable future continuation
statements to reflect that the Furnishings are the property of the Company and
also authorizes the Company to file such statements without its signature.

      (c) The Company will provide the P.C. at the Lab, Treatment Space or other
site with the use of equipment reasonably necessary for the use and continued
development of the Technology, as more fully described in an Equipment Schedule
annexed hereto as the same may hereafter be amended from time to time (the
"Equipment") . The Equipment Schedule indicates all equipment which is attached
to the real property where the Lab and Treatment Space is located.

                                       4
<PAGE>

      (d) The Equipment provided by the Company to the P.C. at the Lab,
Treatment Space or other site shall remain at all times the property of the
Company even if installed in or attached to real property and whether owned or
leased by the Company. The P.C. shall not pledge, lend, create a security
interest in, assign, sublease or part with possession of, the Equipment or any
part thereof or attempt in any other manner to alter, modify, dispose of or
remove the Equipment or any part thereof from the Lab, Treatment Space or any
other site, without the Company's prior written consent, or take any other
action which would adversely affect the Company's title to or interest in the
Equipment. The P.C. shall promptly discharge, at its own expense, any lien or
encumbrance on the Equipment which shall arise, unless the same shall have been
created by the Company. The P.C. agrees to sign a Form UCC-l Financing Statement
and any applicable future continuation statements to reflect that the Equipment
is the property of the Company.

      (e) The P.C. shall cause the Equipment to be operated in accordance with
any applicable manufacturer's manual of instructions and only by competent and
qualified personnel.

      (f) THE COMPANY HEREBY DISCLAIMS ANY REPRESENTATIONS OR WARRANTIES WITH
RESPECT TO THE EQUIPMENT, AND THE FURNISHINGS, EXPRESS, IMPLIED OR OTHERWISE,
INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

      (g) The P.C. agrees to use the Furnishings and Equipment only for the
purposes described in this Agreement and in accordance with applicable laws and
regulations.

      (h) The Company shall be responsible, at its expense, to repair and/or
maintain the Furnishings and Equipment except for repairs caused by the willful
misconduct, negligence or misuse of the Furnishings or Equipment by the P.C. or
its agents or subcontractors. All such repairs and maintenance shall be provided
by the Company, by its own employees, agents or subcontractors, upon the request
of the P.C.

            2.3 Supplies

                                       5
<PAGE>

            The Company will provide the P.C. with such medical and office
supplies (hereinafter the "Supplies") that are reasonably necessary for the day-
to-day operation of the P.C. including, specifically, isotopes and aggregated
proteins used in connection with the Technology which are supplied by including
but not limited to Mallinckrodt Medical, Inc. of St. Louis or such other
supplies as may be reasonably acceptable to the P.C. (the "Isotopes")

            2.4 Personnel Services

      (a) The Company will provide the P.C. with such clerical personnel and
other non-medical personnel such as, for example, secretaries, receptionists,
file clerks, administrators, etc. ("Non-Medical personnel") as may be reasonably
required to perform necessary services for the P.C.

      (b) Non-Medical Personnel will be selected and assigned to the P.C. on an
as-needed basis as reasonably agreed to by the parties.

      (c) The Company will be responsible for the salary, withholding taxes,
compensation insurance, disability insurance, medical/health insurance and other
fringe benefits of the Non-Medical Personnel provided by the Company to the P.C.

      (d) The P.C. acknowledges that the Non-Medical Personnel provided by the
Company under this Agreement may, from time to time, perform services for other
clients of the Company. Nothing in this Agreement, express or implied, shall
prevent the Company from providing the services of such personnel of its other
present or future clients or using them for its own purposes.

      (e) The Company will not provide Non-Medical Personnel on the holidays
listed below and also reserves the right to modify or substitute the list of
holidays on which services will not be provide:

      1.     New Year's Day                6.    Independence Day
      2.     Martin Luther King Day        7.    Labor Day

                                       6
<PAGE>

      3.     President's Day               8.    Yom Kippur
      4.     Good Friday                   9.    Thanksgiving Day
      5.     Memorial Day                 10.    Christmas Day

      Should the P.C. require Non-Medical Personnel on any of the 10 holidays
set forth above, it shall notify the Company in writing seven (7) business days
in advance of the P.C.'s clerical needs. In such event, the Company will use its
best efforts to supply holiday Non-Medical Personnel as requested by the P.C.

            2.5 Managerial and Administrative Services.

            Unless otherwise set forth in this Agreement, the Company will
provide all non-medical managerial and administrative services as may be
reasonably required by the P.C. such as, for example, office administrative
services, general administrative services and fiscal management services.

            2.6 LICENSING OF NAME AND PATENTS

            (a) The Company hereby licenses to the P.C. for its use in
connection with the Technology the trade name "Molecular Radiation" (the "Trade
Name")

            (b) The Company hereby licenses to the P.C. the methods for treating
solid tumor cancer covered by U.S. Patent Nos. 5,535,726 and 5,424,288 dated
July 23, 1996 and June 3, 1995, respectively (the "Patents"), and related know
how, procedures and technology (collectively, the "Technology"), which
Technology has been assigned to the Company through a separate agreement by and
between Stanley E. Order, M.D. and the Company, dated the date hereof.

            3. CONSULTING SERVICES

            3.1 The Company may provide to the P.C. the following services

                                       7
<PAGE>

("Consulting Services") as may be agreed to in the future by the parties:

            (a) review and analysis of available health insurance plans with
special emphasis on managed care/self insurance plans (hereinafter "Managed
Care") which can utilize the services of the P.C.;

            (b) personal contact with representatives of Managed Care payers to
advise them of the expertise and quality of the P.C.'s Practice;

            (c) preparation of the P.C's applications to the Managed Care and
Indemnity payers;

            (d) consultation with the P.C. regarding the fees the P.C. should
accept from managed Care, Indemnity and capitate payers; and, subject to the
P.C.'s approval, negotiation of such reimbursement rates;

            (e) assistance to the P.C. in negotiation of Managed Care and
Indemnity Provider Agreements;

            (f) sources of patents;

            (g) assistance to the P.C. in evaluating and developing areas in
which the P.C. can expand the P.C.'s Practice;

            (h) evaluation of new technologies, methods and equipment;

            (i) assistance in developing Quality Assurance and Utilization
Review programs;

            (j) business advice in connection with the expansion of the P.C.
into new and expanded service areas or new medical subspecialties;

                                       8
<PAGE>

            (k) development of programs, including, but not limits to, the
formulation and production of seminars and/or lectures, whereby the expertise of
the P.C.'s physicians and its quality practice can be made known to the medical
professions and the communities in which the P.C. practices;

            (1) consultation with the P.C. concerning the
feasibility/profitability of establishing new facilities for the P.C. and
assistance in (i) identifying suitable locations; (ii) negotiating purchase
contracts or leases; (iii) supervising renovations/constructions; and (iv)
integrating new~ facilities into the P.C.' s operation;

            (m) consultation with the P.C. regarding practice acquisition
targets including (i) identification of medical practices available for
purchase; (ii) due diligence reviews;. (iii) negotiation of the purchase
contract; and (iv) assistance in the integration of the acquired practice;

            (n) production of a strategic business plan for the P.C. for the
following two, five and seven years; and

            (o) assistance in the development of community service programs;

            4. BILLING AND COLLECTION AND ARBITRATION SERVICES

            4.1 The Company will provide the P.C. with billing and collection
services for all medical services rendered by the P.C.

            (a) The P.C. agrees that during the term of this Agreement, it will
provide the Company with billing and collection information relevant to all
claims and/or billings for all medical services rendered by the P.C. (the
"Claims")

            (b) The Company will be responsible for the complete and/or

                                       9
<PAGE>

exclusive processing of all Claims in connection with the P.C. `s Practice.
Where appropriate, the Company shall establish internal procedures to be used by
the P.C. for the purpose of assuring the accurate and timely gathering of
billable information.

            (c) The Company agrees, in a manner consistent with industry
practices, to render bills on behalf of the P.C. and thereafter seek to collect
said accounts, exercising due care, skill and ability. The Company will also
bill and use appropriate efforts to collect all patient deductibles and
copayment amounts.

            (d) The Company shall maintain accurate records of all transactions
which will be available during normal business hours for inspection by the P.C.
or its duly authorized representative upon reasonable notice to the Company.

            (e) The Company shall at all times conform with all applicable
federal, state and local laws, rules and regulations and shall modify its
service in the event of any change in such laws, rules and regulations.

            (f) The Company agrees to keep all information obtained from the
P.C. concerning identifiable patients and their diagnosis/treatment/evaluation
confidential except for disclosures required for billing purposes or where
required by law or subpoena.

            (g) All claims submitted by the Company will be in the name of the
P.C. The P.C. agrees that remittances and all other proceeds of accounts
receivable generated by the P.C. shall be remitted to a post office box
maintained by the Company on behalf of the P.C. or to such other address as the
parties may hereafter agree upon. All monies and instruments collected by the
Company on behalf of the P.C. will be deposited into the P.C.'s segregated
operating account (the "Segregated Account") ; and in connection therewith, the
P.C. hereby authorizes the Company to endorse all such checks with the P.C. name
for deposit to the Segregated Account. In

                                       10
<PAGE>

the event any payment, proceed or instrument in payment of services or accounts
receivable related to the P.C.'s Practice is received directly by the P.C., the
same shall be immediately remitted to the Company for deposit into the
Segregated Account.

            (h) The P.C. agrees that the Company may designate two individuals
who will have signature authority over the Segregated Account and the P.C.
further agrees that the Company may make payments on behalf of the P.C. from the
Segregated Account for obligations of the P.C., which obligations shall include
the fees to be paid to the Company pursuant to this agreement.

            4.2 The Company shall, at the request of the P.C., submit claims of
the P.C. for payment of its services to arbitration, prepare all documents
necessary in connection therewith and interface on behalf of the P.C. with
counsel if same is retained in connection with any such arbitration.

            5. WORKING CAPITAL ADVANCE

            5.1 Upon written request of the P.C., the Company may, in its sole
discretion, advance monies to the P.C. for purposes of working capital (the
"Working Capital Advance")

            5.2 Upon written request for the Working Capital Advance, the P.C.
will provide the Company with:

            (a) a statement that the proceeds of the Working Capital Advance
will be used solely by the P.C. for its medical practice; and

            (b) a statement as to the exact use of the Working Capital Advance.

            5.3 Upon review of a request for a Working Capital Advance and the

                                       11
<PAGE>

financial records and reports of the P.C., the Company will determine whether
and upon what terms it will approve such Working Capital Advance. The Company's
determination to make the Working Capital Advance requested will be based upon
such factors as it determines are reasonable and appropriate, including but not
limited to, the following: (i) the purpose of the request; (ii) the financial
condition of the P.C. at the time of the request; (iii) the prevailing economic
conditions; (iv) interest rates; (v) the availability of capital to the Company
on reasonable terms and (vi) a business plan and budget of the P.C. for the
following calendar year. If the request for the Working Capital Advance is
granted, the parties agree to negotiate in good faith mutually agreeable terms
for the repayment of the Working Capital Advance and the P.C. agrees to execute
such documents as are customary to document such transaction. If the request for
a Working Capital Advance is denied, such denial will not constitute a breach of
this Agreement. The repayment of a Working Capital Advance will be in addition
to any fees due the Company pursuant to Paragraph 6 of this Agreement.

            6. COMPENSATION

            6.1 For the services to be provided by the Company to the P.C.
pursuant to Paragraphs 2 and 4 of this Agreement the P.C. will pay to the
Company (a) on a weekly basis, in arrears, an amount equal to the actual cost to
the Company of providing all such services to the P.C., which costs shall
include, without limitation, the salaries and benefits of the non-medical
Personnel, the cost of Supplies, the rent payable for Licensed Space if any, etc
plus (b) on a monthly basis in advance $9,000 per month through December 31,
1998 (Such $9,000 hereinafter called the "Initial Fee").

            6.2 The Parties agree that the Initial Fee has been determined based
upon the management services required by the current operations of the P.C. and,
therefore, the parties agree that the Initial Fee shall be subject to adjustment
prior to January 1 during the terms of this Agreement beginning on January 1,
1999.

                                       12
<PAGE>

In contemplation thereof, the parties agree that at least thirty (30) days prior
to each march 31 during the term of this Agreement (beginning with march 31,
1998) the P.C. and the Company shall meet for the

            This Agreement shall be effective for a term commencing the 1st day
of December. 1997 and ending on the 30th anniversary thereof, unless earlier
terminated in accordance with this Agreement.

            8. TERMINATION BY THE COMPANY

            8.1 Notwithstanding paragraph 7 above, the Company has the option to
terminate this Agreement upon or following the occurrence of any of the
following events:

            (a) the failure of the P.C. to make timely payment of any Fee due
the Company as set forth in Paragraph 6;

            (b) the failure of the P.C. to make timely repayment of the Working
Capital Advances as set forth in Paragraph 7.3;

            (c) failure of the P.C. to maintain professional liability insurance
as provided in paragraphs 17.4, 17.5 and 17.6 of this Agreement;

            (d) final action by the New York State Board of Regents resulting in
the revocation or suspension of the license to practice medicine in New York of
any of the shareholders of the P.C.;

            (e) the surrender of license to practice medicine in New York by all
shareholders of the P.C.;

            (f) the filing of criminal charges against any shareholder of the
P.C.

                                       13
<PAGE>

            (g) the death of all shareholders of the P.C.;

            (h) the mental or physical disability or incapacity of all
shareholders of the P.C. which prevents the shareholders from rendering medical
services to the P.C. for a consecutive period of fifteen (15) days;

            (i) the failure of the P.C. to practice medicine for a period of
five (5) consecutive days;

            (j) the dissolution of the P.C.;

            (k) the bankruptcy or insolvency of the P.C.;

            (1) assignment other than as permitted by Paragraph 30.1;

            (9) material breach of this Agreement by the P.C. with such breach
continuing for forty-five (45) days after written notice to the P.C. by or on
behalf of the Company stating the nature of the breach, provided however, that
if the breach is not capable of cure within said forty-five (45) day period,
then the P.C. shall have such time as is reasonably necessary to cure such
breach provided that the P.C. commences action to cure the breach within the
forty-five (45) day notice period and continues diligently to attempt to cure
such breach.

            9. DAMAGES

            If any act described in paragraph 8 above shall occur and if the
same shall result in the Company terminating this Agreement, the P.C. shall (a)
be liable to the Company in an amount equal to the sum of all amounts which
remain payable by the Company for any contractual obligations which the Company
incurred or for which it may remain liable in order to meet the Company's
performance obligations under this contract and (b) pay the Company liquidated
damages in the agreed upon amount

                                       14
<PAGE>

of (i) $1,400,000 if the termination occurs prior to September 1, 1997, (ii)
$1,200,000 if the termination occurs on or after September 1, 1997 and prior to
September 1, 1998, (iii) $1,000,000 if the termination occurs on or after
September 1, 1998 and prior to September 1, 1999, (iv) $800,000 if the
termination occurs on or after September 1, 1999 and prior to September 1, 2000;
(v) $600,000 if the termination occurs on or after September 1, 2000 and prior
to September 1, 2001 and prior to September 1, 2002, and (vi) $200,000 if the
termination occurs on or after September 1, 2002 and prior to September 1, 2003.
The liquidated damages are predicated upon (i) the initial significant
investment may by the Company in staffing and providing the services described
in this Agreement; (ii) the loss of future profits; (iii) the loss of other
corporate opportunity; and (iv) shall in no event be deemed to be a penalty.

      In no way will Dr. 0. be liable personally for any damages

            10. RIGHTS UPON TERMINATION

                  10.1 Upon termination or non-renewal of this Agreement, the
P.C. shall:

                  (a) quit and peacefully vacate all Licensed Space and
surrender to the Company any and all Furnishings, Equipment, Supplies or other
items provided by the Company in good order and condition (reasonable wear and
tear resulting from their proper use alone excluded) . Upon or at any time after
any such termination or non-renewal, the Company may, without further notice,
enter upon and re-enter all Licensed Space and possess and repossess itself
thereof, by force, summary proceedings, ejectment or otherwise, and may
dispossess and remove the P.C., its property and its personnel and all other
persons and property from the Licensed Space. The P.C. hereby expressly waives,
so far as permitted by law, the service of any notice of intention to reenter
provided for in any statute, or of the institution of legal proceedings to that
end.

                  (b) cease and desist from all use of the Company's Trade Name

                                       15
<PAGE>

and Confidential Information (as hereinafter defined) in any way, and deliver to
the Company, or its duly authorized representatives, all materials and papers
which may contain the Company's Trade Name or Constitute the Company's
Confidential Information.

                  (c) refrain from using, without the Company's prior written
consent, the Company Trade Name, or name or any word or mark which is likely to
be similar to or confusing with the Company's Trade Name.

                  (d) cease and desist from all use of the Company's Technology
in any way.

                  (e) refrain from using, without the Company's prior written
consent, the Technology.

            10.2 The P.C. agrees that its continued use of the Trade Name, the
Technology or the Company's Confidential Information at the termination or
expiration of this Agreement will result in immediate and irreparable damage to
the Company. In this regard, the P.C. agrees that the Company shall be entitled
to equitable relief by way of injunction and such other relief any court with
jurisdiction may deem just and proper. Additionally, the P.C. agrees that
pending such a hearing and the decision on the application for such permanent
injunctive relief, the Company shall be entitled to a temporary restraining
order, without prejudice to any other remedy available to the Company.
Furthermore, all such remedies hereunder shall be at the expense of the P.C.

            10.3 The parties agree that subsequent to the termination of this
Agreement and until all sums due to the Company from the P.C. have been paid in
full, the Company shall have the option to collect the P.C.'s outstanding
receivables up to the amount due and payable to the Company by the P.C. and to
apply the proceeds thereof to the payment of all sums due to the Company from
the P.C. Upon such payment in full, the Company shall terminate its security
interest in the

                                       16
<PAGE>

remaining accounts receivable of the P.C.

            10.4 The provisions of this Paragraph 10 shall survive termination
of this Agreement and shall in no event be construed to be an exclusive remedy
of the Company and such remedy shall be held and construed to be cumulate and
not exclusive of any rights or remedies, whether in law or in equity, otherwise
available under the terms of this Agreement or under federal, state and local
statutes, rules and regulations.

            11. SECURITY INTEREST

      11.1 As security for the full and timely payment of all amounts which may
at any time and from time to time be owed by the P.C. to the Company pursuant to
this Agreement or otherwise, the P.C. hereby grants to the Company (a) a first
senior continuing security interest in all of the P.C.'s past, present and
future accounts, accounts receivable, contract rights and reimbursement rights
(the "General Receivables and Rights") and (b) the proceeds thereof. The General
Receivables and Rights are collectively referred to herein as the "Collateral."
In order to implement the foregoing, the P.C. agrees to sign a UCC Form 1
Financing Statement and any future updates and/or continuation statements and
also authorizes the Company to file such instruments without its signature.

            11.2 The P.C. shall at all times keep the Collateral free and clear
of all liens and encumbrances except liens created by the Company's security
interest in the General Receivables and Rights.

            11.3 The P.C. agrees from time to time, at the sole expense of the
P.C., to promptly execute and deliver all further instruments and documents, and
take all further action that may be necessary, or that the Company may request,
in order to perfect any security interest grated by the P.C. herein or to
perfect the Company's right in and to the accounts receivable assigned
receivables. Without limiting the generality of the foregoing, the P.C. shall
execute and file such

                                       17
<PAGE>

security agreements, financing or continuation statements, or amendments
thereto, and such other instruments or notices, as may be necessary or
desirable, or as the Company may request, in order to perfect and preserve the
security interest granted herein by the P.C. to the Company to file any such
instruments without its signature.

            11.4 The occurrence of any of the events set forth in Paragraph 8
which gives rise to the Company's right to terminate this Agreement, shall
constitute a default hereunder (a "Default") . So long as no Default has
occurred, the P.C. shall be entitled to receive all proceeds received in respect
to the Collateral. Upon the occurrence of a Default, all rights of the P.C. with
the respect to the Collateral shall cease and the Company shall have the
exclusive right and authority to receive all amounts paid in respect of the
Collateral. In connection therewith, the P.C. irrevocably authorizes the Company
to notify any or all of the P.C.'s obligers (including, but not limited to,
patients and third-party payers) to make payment directly to the Company.

            11.5 Upon Default, in addition to all rights and remedies set forth
in this Agreement, the Company may exercise from time to time any rights and
remedies available to it by law or in equity, including the rights and remedies
set forth in the Uniform Commercial Code as in effect from time to time in New
York.

            11.6 In the event of Default, the Company shall have the right, in
the name, place and stead of the P.C., to execute the necessary endorsements,
assignments or other instruments of conveyance or transfer with respect to all
or any of the Collateral and the proceeds thereof. The foregoing grant of
authority is irrevocable and coupled with an interest.

            12. MEDICAL RECORDS

            12.1 The P.C. will maintain medical records regarding all patients
of the P.C.'s Practice as required by the laws of the State of New York and by
the

                                       18
<PAGE>

rules and regulations of third-party payers, commercial insurers, health care
plans or organizations and in accordance with good medical practice. All records
at Lab or Treatment Space relating to the P.C.'s practice and its patients shall
remain the sole property of the P.C. All records relating to the services of the
Company which are created and maintained by the Company, shall remain the sole
property of the Company. The parties shall permit each other access during
normal business hours to such books and records upon reasonable notice.

            13. FISCAL MATTERS

            13.1 The P.C. shall have no responsibility or liability for any
taxes or governmental obligations imposed upon the Company, which shall be the
sole obligation of the company.

            13.2 The Company shall have no responsibility or liability for any
taxes or governmental obligations imposed upon the P.C., which shall be the sole
obligation of the P.C.

            14. INDEPENDENT CONTRACTOR

            14.1 The Company and the P.C. acknowledge that the relationship
between them is that of independent contracting parties whereby the P.C. is a
purchaser and the Company is an independent contractor engaged in the business
of selling non-medical, practice management and financial services. Nothing
contained herein shall be construed to create an employer-employee or
masterservant relationship.

            14.2 The P.C. acknowledges that the Company has the right as an
independent contractor to affiliate or contract with any other person or entity
and nothing contained herein shall be construed as limiting that right.

                                       19
<PAGE>

15. INTENT OF THE PARTIES: CHANGE IN LAW

            15.1 Neither the Company nor any of its personnel shall undertake or
be deemed to undertake the practice of medicine or provide medical advice to the
P.C. or its patients in the performance of services and other obligations under
this Agreement. The Company is not authorized to engage in any activity which
may be construed or deemed under any existing or future law or regulation to
constitute the practice of medicine, the ownership or operation of a medical
practice, or the operation of a health care facility. To the extent that any
acts of the Company required by any provision of this Agreement shall be
construed or deemed to constitute the practice of medicine, the ownership or
operation of a medical practice, or the operation of a health care facility or
if any acts of the P.C. under any provision of this Agreement shall be construed
or deemed to involve an act or service which may only be performed by a clinic,
diagnostic and treatment center or other health facility, said provision shall
be void ab initio or from the date of adoption of such law or regulation, as the
case may be, and the performance of said act cc sec--ice shall be deemed waived.

            15.2 The P.C. shall be solely responsible for: (a) all aspects of
the medical care delivered and research conducted by the P.C.; (b) the
selection, supervision, direction, contracting and employment, hiring and firing
of health care professionals, including all physicians, licensed or certified
technicians and providers of medical or nursing services (hereinafter,
collectively the "Health Professionals") ; (c) establishing general operating
policies and procedures of the P.C.; and (d) all professional and ethical
affairs of the P.C.'s medical practice. The P.C. shall be solely responsible for
the determination and payment of compensation and fringe benefits to health
Professionals who are its employees or independent contractors. The P.C. agrees
to hire or engage only duly licensed and qualified Health Professionals.

            15.3 If in the opinion of counsel to the Company this Agreement, in
whole or in part, is deemed to be in violation of any future federal, state or
local

                                       20
<PAGE>

statute, rule or regulation, the Company may, without electing an exclusive
remedy, (i) terminate this Agreement upon written notice which sets forth
counsel's opinion as to the effect of any newly enacted statute, rule or
regulation upon this Agreement and that the Agreement, in whole or in part,
violates such statute, rule or regulation (ii) demand that the Agreement be
renegotiated in order to conform to any newly enacted statute, rule or
regulation.

            16. CONFIDENTIALITY/NON-SOLICITATION/NONDISCLOSURE

            16.1 The P.C. recognizes and acknowledges that the methods,
techniques, controls, programs, management and financial strategies utilized by
the Company constitutes proprietary information of the Company and is
hereinafter referred to as Confidential Information.

            16.2 The P.C. agrees that without the prior written approval of the
Company, the P.C. will not at any time, whether during or after the termination
of this Agreement, disclose to any person or use for its own benefits indirectly
nor directly except in the course of duties as contemplated by this Agreement,
such Confidential Information or use or permit any person to examine, copy or
duplicate any Confidential Information furnished to the P.C. by the Company and
at the request of the Company and in any event upon the termination of this
Agreement, the P.C. will return to the Company all Confidential Information, as
well as any copies or information derived therefrom. This provision shall
survive the termination of this Agreement.

            16.3 During the term of this Agreement and for one (1) year after
its termination for any reason, any person who has been a shareholder of the
P.C. at any time during such period shall not, directly or indirectly, induce,
attempt to induce, or aid others in inducing, any person in the employ of the
Company to leave the Company's employment. The P.C. also agrees not to employ or
affiliate or contract with, or enter into any business or financial agreement
with, any employee of the Company during the period which such person is
employed by the Company and

                                       21
<PAGE>

for a period of one (1) year following said employee's termination of employment
with the Company. This provision shall survive the termination of this
Agreement.

            16.4 The Company agrees that it will not disclose the treatment
and/or diagnosis of any identifiable patient of the P.C. to any third person
except in the course of its duties or where required by law and the Company
agrees to similarly instruct its employees.

            16.5 The parties acknowledge that disclosure of any Confidential
Information of breach of any part of this Paragraph will give rise to
irreparable injury which will be inadequately compensable in damages.
Accordingly, either party may seek and obtain injunctive relief against the
breach or threatened breach of this Paragraph in addition to any and all other
legal remedies that may be available. In addition to any other relief or damages
to which a party may be entitled, the successful party shall be entitled to
recoup the expenses of reasonable legal fees in any action brought to enforce
any provision of this Paragraph.

            16.6 If any provision contained in this Paragraph or anywhere in
this Agreement shall be deemed by any court of competent jurisdiction to be
invalid, illegal or unenforceable, then such provision shall be modified so as
to make it valid, legal and enforceable to the fullest extent permitted by law,
and the parties agree that such paragraph or provision shall be enforceable such
extent.

            17. REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE P.C.

            The P.C. represents, warrants and covenants to the Company that:

            17.1 The P.C. is a professional corporation duly organized, validly
existing and in good standing under the laws of the State of New York and duly
authorized to practice medicine. The only shareholder of the P.C. is Dr. Stanley
E. Order, M.D. (The "P.C. Shareholder").

                                       22
<PAGE>

            17.2 The execution and delivery of this Agreement by the P.C. and
the performance of his duties hereunder (a) have been duly authorized by all
necessary corporate action, and this Agreement constitutes the valid and binding
obligation of the P.C., enforceable against the P.C. in accordance with its
terms and (b) will not violate or conflict with the P.C.'s Certificate of
Incorporation of By-laws and will not result in a breach of or constitute a
default under any agreement or instrument to which the P.C. or any of its
officers, directors or shareholders may be a party or by which any of them may
be bound or affected.

            17.3 The P.C., its employees and professional subcontractors, if
any, shall, at all times during the term of this Agreement, be duly licensed as
required by the State of New York and company with all applicable laws and
regulations relating to the operation of its medical practice.

            17.4 The P.C. agrees and covenants to maintain, at its sole cost and
expense, medical malpractice insurance in the minimum amount of $1 million per
occurrence and $3 million in the aggregate during the term of this Agreement or
if such insurance is not readily available, the P.C. Shareholders shall name the
P.C. on their individual malpractice policies as an additional insured. The P.C.
shall provide the Company with a copy of such policy or policies. The policy
shall provide for at least thirty (30) days advance written notice from the
insurer to the Company of any alteration, cancellation of termination of the
foregoing coverage.

            17.5 The P.C. covenants and agrees to require all physicians hired
or contracted by it and who perform services for the P.C., at their own cost and
expense cc at the cost and expense of the P.C., to maintain malpractice
insurance in the minimum amount of $1 million per occurrence and $3 million,
cancellation or termination of the foregoing coverage. In the event of receipt
of such notice, the P.C. in the aggregate. The P.C. shall require that the
malpractice policies maintained by its physicians provide for thirty (30) days
advance written notice to the P.C. from the insurer of any alteration shall
immediately advise the Company of

                                       23
<PAGE>

any such alteration, cancellation or termination of malpractice coverage.

            17.6 The P.C. Covenants and agrees to require all health
Professionals, other than physicians hired by the P.C. to perform services for
the P.C. to maintain (at their own cost and expense or at the cost and expense
of the P.C.) professional liability insurance as is customary in the New York
City area. The P.C. shall require that the professional liability insurance
policies maintained by Health Professionals provide for thirty (30) days advance
written notice to the P.C. from the insurer of any alteration, cancellation or
termination of the foregoing coverage. In the event of receipt of such notice,
the P.C. shall immediately advise the Company of any such alteration,
cancellation or termination of malpractice coverage.

            17.7 The P.C. covenants and agrees to maintain at its expense
general casualty and liability insurance in amounts for medical practices such
as the P.C. which shall cover all risks of physical loss or damage to licensed
Space, Furnishings and Equipment and all risks of liability for bodily injury
and property damage resulting from the operation of any Equipment at the Lab or
Treatment Space and of damages, destruction and loss of use of property damage
from any condition of the Licensed Space. The casualty and liability insurance
shall specify the Company as a named insured and provide for thirty (30) days
advance written notice to the Company from the insurer of any alteration,
cancellation or termination of the foregoing insurance company. In the event of
receipt of such notice, the P.C. shall immediately advise the Company of such
alteration, cancellation or termination.

            17.8 The P.C. agrees and covenants to comply with all OSHA, New York
State Department of Health and other applicable governmental regulations as
pertain to a medical practice.

            17.9 The P.C. agrees and covenants to have all patients assign the
right of collection from carriers and participating health care organizations,
where appropriate, to the P.C. or its agent.

            18. REPRESENTATIONS. WARRANTIES AND COVENANTS OF THE COMPANY

                                       24
<PAGE>

            The Company represents, warrants and covenants to the P.C. that:

            18.1 The Company is a corporation duly organized, validly existing
and in good standing under the laws of the State of New York.

            18.2 The execution and delivery of this Agreement by the Company and
the performance of its duties hereunder: (a) have been duly authorized by all
necessary corporate action, and this Agreement constitutes the valid and binding
obligation of the Company, enforceable against the Company in accordance with
its terms and (b) will not violate or conflict with any provision of law or of
the Company' s Certificate of Incorporation or By-laws and will not result in a
breach of or constitute a default under any agreement or instrument to which the
Company or any of its officers, directors or shareholders may be a party or by
which any of them may be bound or affected.

            18.3 The Company agrees to maintain or cause to be maintained in the
name of the Company at its expense insurance covering: (a) all risks of physical
loss or damage to the Furnishings and Equipment; (b) liability for bodily injury
and property damage resulting from the operating of any of the Equipment or the
Isotopes at the Lab, Treatment Space or other site where the Company makes
available Equipment for the P.C.'s use and for damage, destruction and loss of
use of property of third parties resulting therefrom; and (c) all risks of
liability for bodily injury and property damage from any condition of the
Licensed Space with such insurance companies and in such amounts as the Company
shall deem appropriate, naming the P.C. as additional insured and furnishing the
P.C. with a Certificate of Insurance upon the P.C.'s request.

            18.4 The Company agrees to maintain the Licensed Space, Furnishings
and Equipment in good condition and repair, reasonable wear and tear from normal
use excepted. Whenever possible, the Company shall arrange for routine
maintenance, on seven (7) days advance notice to the P.C. and at a time and
manner that is not disruptive to the P.C.'s Practice, all repairs of Equipment
other than those necessitated by the P.C.'s willful misconduct or misuse of the
Equipment will be performed as soon as practicable. The Company shall arrange
for emergency repairs to be performed as promptly

                                       25
<PAGE>

as practicable.

            19. INDENTIFICATION

            19.1 The P.C. shall indemnify, protect and hold harmless the
Company, its shareholders, officers, directors, employees, agents, successors,
subsidiaries, affiliates and assigns from and against the defense and any and
all losses, including legal expenses, damages (direct and consequential) ,
injuries, claims, demands, costs and expenses, including legal expenses, of
whatsoever nature, arising out of or in connection with or incidental to: (a)
the conduct of this medical practice including research activities, (b) any
breach of this Agreement by the P.C. or any of its shareholders, and (c) the use
or operation by the P.C.'s employees, agents, patients or invites of any item of
Equipment or Supplies, including the Isotopes, and its use and occupancy of the
Licensed Space and Furnishings regardless of where, how and by whom used or
operated.

            19.2 The Company will indemnify and hold the P.C. and its
shareholders harmless from and against any and all losses, including legal
expenses, damages, injures, claims, demands, costs and expenses of whatsoever
nature arising out of or in connection with (a) any breach of this Agreement by
the Company; and (b) any gross negligence or willful misconduct of the Company
in the performance of its obligations under this Agreement.

            19.3 The provisions contained in this Paragraph shall survive the
termination of this Agreement.

            19.4 In no way shall Dr. 0. ever be held liable personally.

                                       26
<PAGE>

20. NON-COMPETITION AND RESTRICTIVE COVENANT

            20.1 Throughout the term of this Agreement including any renewal or
other extension thereof, and for an additional period of three (3) years
following termination of this Agreement for any reason except with the prior
written consent of the Company, neither the P.C. nor any of its shareholders
will directly or indirectly (i) own, manage, operate, join, control or
participate in the ownership, management operation or control of, or have an
interest in or a financial relationship with, or be connected in any manner with
any business which is directly or indirectly competitive with the business of
the Company or (ii) other than as a shareholder and/or an employee of the P.C.
own, operate, market or become employed, be an independent contractor for or be
affiliated or connected in any manner with any medical practice or health care
provider located in County or County in the State of New York.

            20.2 The provisions of Paragraph 20.1 shall not apply if the Company
terminates this Agreement, other than as a result of a breach by the P.C.

            20.3 In order to give the language in Paragraph 20.1 effect, the
P.C. agrees to place the restrictions contained in Paragraph 20.1 in all
contracts and agreements with the P.C. Shareholders, including, without
limitation, any employment agreements with such P.C. Shareholders.

            20.4 The P.C. agrees that it will not issue any share s of its
capital stock to any person unless such person agrees, in writing, with the
Company, to be bound by those provisions of this Agreement which are binding
upon the P.C. Shareholders.

            20.5 The parties agree that the provisions of this Paragraph 20 are
necessary and reasonable to protect the Company in the conduct of its business.
The P.C. agrees that any remedy at law for any breach of the foregoing covenants
maybe inadequate and that the Company will be entitled, at its election, to
injunctive

                                       27
<PAGE>

relief to enjoin any violation, threatened or actual, of this Paragraph 20.

            20.6 The parties agree that if any restriction contained in this
Paragraph 20 shall be deemed to be invalid, illegal or unenforceable by reason
of the extent, duration, geographical scope, or other provisions hereof the
court shall reduce same only to the extent necessary in order for same to be
enforceable, and in its reduced form, such restriction shall then be enforceable
in the manner contemplated hereby.

            20.7 The provisions contained in this Paragraph 20 shall survive
termination of this Agreement.

      21. FORCE MAJEURE

            Neither party shall be liable for or deemed to be in default for any
delay or failure to perform any act under this Agreement (other than the payment
of money) resulting, directly or indirectly, from Acts of God, civil or military
authority, acts of public enemy, war, accidents fires, explosions, earthquake,
flood, failure of transportation, strikes or other work stoppages by either
party's employees, or any other cause beyond the reasonable control of such
party.

            22. REMEDIES OF THE P.C.

            (a) All services provided by the Company pursuant to this Agreement
are furnished without warranty. The P.C.'s sole monetary remedy, and the
Company's sole monetary obligation, for any failure to render any service, or
any error or omission or any delay or interruption with respect thereto, is
-limited to an adjustment to the P.C. of the fee otherwise payable hereunder in
an amount equal to the fair market value of such services for the period during
which the failure, delay or interruption occurred. With the sole exception of
the remedy set forth in the immediately preceding sentence, the P.C. expressly
waives, and agrees not to make any claim for, any damages, direct or
consequential, arising out of any failure to furnish any such services, any
error or omission with respect thereto, or any delay or interruption of the
same. In no event

                                       28
<PAGE>

shall there be any adjustment to the fee payable hereunder if the P.C. is in
default under the Agreement at such time.

            (b) The P.C. may only terminate this Agreement upon a substantial
material and continued breach by the Company of its obligations to the P.C.
hereunder (a "Material breach") . A Material Breach shall only be deemed to have
occurred under the following circumstances:

            (i) The P.C. shall deliver to the Company a written notice which
      notice shall provide in detail the alleged Material Breach.

            (ii) The Company shall have a period of 120 days in which to cure
      such alleged Material Breach. If after the expiration of such 120 day
      period the P.C. believes that such alleged Material Breach has not been
      cured, the P.C. shall send to the Company a further notice specifying in
      detail why it believes that the alleged Material Breach has been cured.

            (iii) The Company shall then have a period of an additional 60 days
      in which to cure such alleged Material Breach.

            (iv) If after the expiration of such additional period, the P.C.
      shall continue to maintain such alleged Material Breach shall not have
      been cured, it shall send the Company a notice that it has elected to
      terminate the Agreement on account of such alleged Material Breach (a "PC
      Termination Notice)

            (v) If the Company shall dispute the PC Termination Notice then this
      Agreement shall not terminate unless and until a final determination by a
      court of competent jurisdiction has determined that such Material Breach
      has, in fact, occurred.

Notwithstanding anything to the contrary that may be contained herein, if a
Material Breach shall have occurred with respect to a specific service to be
rendered to the Company by the P.C. hereunder, this Agreement shall only
terminate with respect to

                                       29
<PAGE>

such service in which event the Initial Fee or the New Fee, as the case may be,
then in effect shall be proportionately reduced.

            23. ENTIRE AGREEMENT

            This Agreement sets forth the entire understanding between the
parties hereto and supersedes all other prior agreements between the parties.
Each party to this Agreement acknowledges that no representations, inducements,
promises or agreements, orally or otherwise, have been made by any party, or
anyone acting on behalf of any party, that not embodied in this Agreement, and
that no other agreement, statement or promise not contained in this Agreement
shall be valid or binding as between the P.C. and the Company.

            24. ARBITRATION

            Any controversy or claim arising out of or relating to this
contract, or the breach thereof shall be settled by three arbitrators in
accordance with the Commercial Arbitration Rules of the American Arbitration
Association, and judgment upon the award rendered by the arbitrators may be
entered in any Court having jurisdiction thereof. Arbitration will be conducted
in New York County, New York. This paragraph shall not apply to relief sought
under Paragraphs 10, 20 or 22 of this Agreement nor shall it restrict the right
of either party to institute proceeding to enable such party to obtain
provisional injunctive relief during the pendency of an arbitration.

            25. COMPANY'S OPTION TO PURCHASE

            In the event that the State of New York in the future permits the
corporate practice of medicine without need to resort to a Certificate of Need,
or

                                       30
<PAGE>

if, in the opinion of counsel to the Company, it otherwise becomes lawful in New
York State for the Company to acquire and operate the medical practice of the
P.C., the Company shall have the right to purchase the medical practice of the
P.C. and the P.C. agrees to sell the medical practice of the P.C. to the
Company. The purchase price shall be $100. In order to make meaningful the
foregoing right, the P.C. agrees that any purchaser of the P.C. or transferee or
other recipient of share thereof and any successor P.C. and shareholders thereof
shall be bound by the provisions of this Paragraph and no sale of the P.C. or
transfer of shares thereof shall be effective unless the purchaser or transferee
acknowledges in writing his agreement to the provisions of this Paragraph.

            26. MODIFICATION

            This Agreement may not be orally changed or modified. All changes or
modifications to this Agreement shall be in writing signed by the party against
whom enforcement of any waiver, change, modification, extension or discharge is
sought.

            27. WAIVER

            No delay or failure to exercise a remedy or right occurring upon any
breach or default shall be construed as a waiver of such remedy or right, nor
shall it affect any subsequent default of a same or different nature.

            28. ASSIGNMENT

            28.1 The P.C. shall not assign this Agreement or any of its rights
or obligations under this Agreement without the prior written consent of the
Company. Any transfer of the profits, losses or cash flow of the P.C. shall also
constitute an assignment hereunder and constitute a material breach. The Company
shall have a right to assign this Agreement in connection with a transfer of all
or substantially all of the Company's business whether by sale, merger or
otherwise.

                                       31
<PAGE>

            28.2 The P.C. specifically agrees that the Company shall have the
right to perform the services to be provided hereunder through any parent,
subsidiary, division or affiliate of the Company without written consent from
the P.C.

            29. SUCCESSORS AND ASSIGNS

            All of the provisions herein contained shall be binding upon an
inure to the benefit of the respective successors and permitted assigns of the
parties hereto to the same extent as if such successors and permitted assigns
were in each case named as a party to this Agreement.

            30. EFFECT OF INVALIDITY

            Should any part of this Agreement for any reason be declared
invalid, such decision shall not affect the validity of any remaining portion,
which remaining portion shall remain in force and effect as if this Agreement
had been executed with the invalid parties thereof eliminated.

            31. NOTICES

            Any notice or communications required or permitted hereunder shall
be deemed to have been sufficiently given or served for all purposes if in
writing and delivered personally to the party or to an officer of the party, or
sent by registered or certified mail, postage and charges prepaid, return
receipt requested to the parties' addresses as set forth below:

             To the P.C.:            Stanley E. Order, M.D., P.C.

                                      c/o

             To the Company:         Molecular Radiation Management, Inc.

or such other address as may subsequently be provided to the other party in
writing.

                                       32
<PAGE>

Unless otherwise expressly set forth in this Agreement, any such notice shall be
deemed to be given on the date on which the same was deposited in a regularly
maintained receptacle for the deposit of United States mail, addressed and sent
as above.

            32. FURTHER ACTIONS

            At any time and from time to time, each party agrees, without
further consideration, to take such actions and to execute and deliver such
documents as may be necessary to effectuate the purposes of this Agreement.

            33. CAPTIONS

            The paragraph captions contained in this Agreement are inserted only
as a matter of convenience and reference, and in no way define, limit or
describe the scope of this Agreement, nor the intent of any provision thereof.

            34. NO PARTNERSHIP/JOINT VENTURE

            Nothing contained in this Agreement shall be deemed or construed as
creating a partnership or joint venture between the Company and the P.C. or
between the Company and any other person, nor cause the Company or the P.C. to
be responsible in any way for debts or obligations of the other or any person
whomsoever.

            35. COUNTERPARTS

            This Agreement may be executed in one or more counterparts, each of
which shall be deemed an original, but which, taken together, shall constitute
one Agreement.

                                       33
<PAGE>

36. GOVERNING LAW

            This Agreement shall be governed by and construed in accordance with
the laws of the State of New York and as executed in Kings County. Kings County
shall have sole jurisdiction for any and all dispute resolutions, and all
parties consent to same.

            IN WITNESS WHEREOF, the parties hereto have executed this Agreement
as of the date first above written.

                                        STANLEY ORDER, M D., P.C.

                                        By:_____________________________________
                                           Stanley E. 0rder, M.D., President

                                        MOLECULAR RADIATION MANAGEMENT, INC.

                                        By:_____________________________________
                                           Name:
                                           Title:

                                       34

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