Document:

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                                                                   EXHIBIT 10.13

THIS AGREEMENT is made the 15th day of February 2001

BETWEEN

VIRAGEN, INC. and its subsidiary, VIRAGEN (SCOTLAND) LIMITED ("Viragen"),
Pentlands Science Park, Bush Loan, Penicuik, Midlothian, EH26 0PZ, Scotland

AND

PENG LEE YAP, M.D., 5 Meadow Place, Edinburgh, EH9 1JZ, Scotland

WHEREAS:

Peng Lee Yap, M.D. (herein after known as "Dr. Yap" or "Consultant") is to serve
as Medical Director of Viragen and provide an advisory service and a project
service to Viragen and its affiliates upon and subject to the terms set out
below.

NOW IT IS HEREBY AGREED as follows:

1.       APPOINTMENT

         Viragen hereby appoints Dr. Yap who here by agrees to act as Medical
         Director and Consultant upon and subject to the terms set out below.

2.       CONSULTANT'S OBLIGATIONS

         2.1      Dr. Yap will provide Viragen and its subsidiaries advice on
                  matters relating to the clinical trials, research, development
                  and manufacture of OMNIFERON(TM) and other products where Dr.
                  Yap has is no pre-existing conflict of interest.

         2.2      Dr. Yap agrees to provide these services to Viragen for a
                  minimum of four (4) days each month (or more as from time to
                  time may be agreed). Dr. Yap also agrees to provide advice at
                  other times, as may be required, and to respond to such
                  requests within a reasonable time.

         2.3      Dr. Yap will provide the services to the standard of skill,
                  integrity and reliability which could reasonably be expected
                  from a consultant with skills and qualifications held by the
                  Consultant.

         INFORMATION

         Dr. Yap shall provide to Viragen upon request, written reports of his
         activities on Viragen's behalf. Dr. Yap shall also upon request be
         available for meetings with Viragen or its subsidiaries.

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3.       CONFIDENTIALITY

         3.1      Dr. Yap will operate under the Viragen Confidentiality
                  Agreement dated July 1, 1999 and attached to this document as
                  an Appendix 1.

4.       FEES AND EXPENSES

         4.1      As consideration for serving as Viragen's Medical Director and
                  the provision of the advisory services referred to in
                  paragraphs 2.1, 2.2 and 2.3 above, Viragen shall pay to Dr.
                  Yap a retainer fee of (pound)1,000 per day for a minimum of
                  four (4) days per month during the term of this Agreement
                  payable in arrears within 28 days of the date of Dr.Yap's
                  invoice for such amounts and any expenses referred to in
                  Clause 4.4 below. Time in excess of four (4) days in any one
                  calendar month will be charged at a rate of (pound)1,000 per
                  day.

         4.2      Invoices will be rendered monthly at the end of each calendar
                  month.

         4.3      Viragen will also reimburse Dr. Yap such travelling,
                  accommodation and communication costs as may be reasonably be
                  incurred in connection with the provision of the services
                  pursuant to this Agreement subject to submitting such
                  supporting evidence thereof as Viragen may reasonably require.
                  All air travel will be made by Business Class or Premium
                  Economy Class when available. All rail travel will be made by
                  First Class. Car mileage rates will be charged in accordance
                  with those recommended by the Automobile Association (of Great
                  Britain).

         4.4      For all payments from outside the United Kingdom, Viragen
                  shall pay all bank charges for remittance in Pounds Sterling
                  including any charges payable by Dr. Yap.

5        DURATION AND TERMINATION

         5.1      This Agreement shall be deemed to have commenced on 14
                  February 2001 notwithstanding the date hereof and shall
                  continue indefinitely thereafter, subject to either party's
                  right to terminate it upon one month's written notice.

         5.2      Notwithstanding the provisions of Clause 5.1 above, Viragen
                  may at any time by notice in writing, immediately terminate
                  this Agreement if Dr. Yap shall:

                  5.2.1.   be in breach of any of the terms of this Agreement
                           which, in the case of breach capable of remedy, is
                           not remedied by Dr. Yap within 21 days of receipt by
                           it of a written notice from Viragen specifying the
                           breach and requiring its remedy; or

                  5.2.2.   be incompetent, guilty of gross misconduct or any
                           negligence in respect of its obligations.

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6.       NO EMPLOYMENT OR AGENCY

         Nothing contained in this Agreement shall be construed or have effect
         as constituting any relationship of employment between Viragen and Dr.
         Yap. Dr. Yap shall not have any right or power whatsoever to contract
         on behalf of Viragen or otherwise bind Viragen in any way in relation
         to third parties unless specifically authorised to do so by Viragen.

7.       INDEMNITY OF CONSULTANT

         Viragen shall indemnify and hold harmless Consultant from and against
         any and all claims, judgements, fines, penalties, liabilities, losses,
         costs and expenses (including reasonable attorneys' fees and costs)
         asserted against or incurred by Consultant as a result of acts or
         omissions of Consultant taken or made in the course of performing his
         duties for Viragen or by reason of Consultant acting or having acted as
         a Medical Director or Consultant of Viragen, provided, however, that
         such indemnity shall not apply to acts or omissions of Consultant which
         constitute misconduct, gross negligence or which were intended by
         Consultant to personally benefit Consultant directly or indirectly, at
         the expense of Viragen, unless the matter which benefits Consultant was
         first fully disclosed to the Board of Directors of Viragen and approved
         by said Board.

8.       NOTICES

         Any notice required by this Agreement to be given by one party to the
         other shall be in writing and shall be serviced by sending the same by
         registered post or recorded delivery or leaving at the address of the
         other party specified above or at such other substitute address that
         party may notify in writing, from time to time.

9.       ENTIRE AGREEMENT

         This Agreement, including Appendix 1, sets out the active agreement and
         understanding between Dr. Peng and Viragen in relation to its subject
         matter and supersedes any previous agreement, whether written or oral,
         between the parties.

10.      GOVERNING LAW

         This Agreement shall be governed and construed in all respects with the
         Laws of Scotland.

         In witness whereof the parties have executed this Agreement the day and
         year first above written.

         Signed by         /s/ Gerald Smith
                           -----------------------------------
                           Gerald Smith
                           President - Viragen, Inc.
                           Director - Viragen (Scotland) Ltd.

         For and on behalf of Viragen (Scotland) Limited

         Signed by         /s/ Peng Lee Yap
                           -----------------------------------
                           Peng Lee Yap, M.D.

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                                                                   EXHIBIT 10.16

                              EMPLOYMENT AGREEMENT

AGREEMENT dated 1st July 2001 (the "Effective Date") by and between VIRAGEN
(SCOTLAND) LIMITED, a company registered in Scotland with registered number
155387 and having a place of business at Pentlands Science Park, Bush Loan,
Penicuik, Midlothian EH26 0PZ ("Employer"), and DR. DONALD MAGNUS NICOLSON,
Drumbeg Lodge, Gartness Road, Drymen G63 0DW ("Employee").

WITNESSETH:

WHEREAS, Employer desires to employ the Employee upon the terms and conditions
hereinafter set forth and Employee desires to accept employment upon such terms
and conditions; and

WHEREAS, Employer and Employee desire to set forth in writing the terms and
conditions of their agreements and understandings with respect to Employee's
employment by Employer.

NOW, THEREFORE, Employer hereby employs Employee and Employee hereby accepts
employment under the following terms and conditions:

1.     DEFINITIONS

       In this Agreement unless the context otherwise requires, the following
       expressions have the following meanings:

       "THE BOARD"          means the Board of Directors for the time being of
                            Employer or any committee duly appointed by the
                            Board of Directors;

       "THE EMPLOYMENT"     means the Employee's employment under this
                            Agreement;

       "GROUP COMPANY"      means any holding company for the time being of
                            Employer or any subsidiary for the time being of
                            Employer or of any such holding company (other than
                            Employer) (for which purpose the expressions
                            "holding company" and "subsidiary" shall have the
                            meaning ascribed thereto by Section 736 of the
                            Companies Act 1985).

2.     EMPLOYMENT

       Employer hereby employs Employee, and Employee hereby accepts employment
       by Employer, upon all the terms and conditions hereinafter set forth.

3.     TERM

       Subject to the provisions for earlier termination set forth in clause 15
       hereof this Agreement commenced on 1 July 2001 and shall continue until
       the close of business on 30 June 2003 (the "Employment Term"). Subject to
       the provisions for earlier

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       termination set forth in clause 15 hereof, from 1 July 2003, and annually
       on the 1st July thereafter, the Employment Term of this Agreement shall
       automatically be renewed for one additional year until and unless
       Employee or Employer has given to the other at least 90 days notice prior
       to the relevant 1 July date that the Employment Term of this Agreement is
       not to be renewed.

4.     CONTINUOUS EMPLOYMENT

       Employee's employment with Employer in terms of this Agreement is
       continuous with his previous employment with Employer which commenced on
       1st April 1996.

5.     EMPLOYEE'S REPRESENTATIONS AND WARRANTIES

       Employee represents and warrants to Employer that he is free to accept
       employment with Employer as contemplated herein and has no other written
       or oral obligations or commitments of any kind or nature which would in
       any way interfere with his acceptance of employment pursuant to the terms
       hereof or the full performance of his obligations hereunder or the
       exercise of his best efforts in his employment hereunder.

6.     DUTIES AND EXTENT OF SERVICES

       Employee shall be employed as Employer's Managing Director and Chief
       Operating Officer of the Group Companies Viragen (Europe) Limited and
       Viragen Inc. As such, Employee shall, subject to the direction of the
       Board, supervise and conduct the Employer's operations and affairs as
       assigned by the Board, and perform such other duties and responsibilities
       as may be assigned to Employee from time to time consistent with such
       title by the Board including where such duties require Employee to work
       for any Group Company. Employee accepts that he may be required to
       perform other tasks or duties outwith the scope of his normal duties.
       Employee agrees to devote sufficient time, skill, attention and energy
       diligently and competently to perform the duties and responsibilities
       reasonably assigned to him hereunder or pursuant hereto to the best of
       his abilities. Employee shall use his best efforts to be loyal and
       faithful at all times and constantly endeavor to improve his ability and
       his knowledge of the business of Employer in an effort to increase the
       value of his services for the mutual benefit of Employer and Employee.
       Employer may at its sole discretion transfer this Agreement or second
       Employee to any Group Company at any time.

       Employer reserves the right to suspend all or any of Employee's duties
       and powers on such terms as it considers expedient (including a term that
       Employee shall not attend at Employer's premises) or to require Employee
       to carry out the duties of another position of equivalent status either
       in addition to or instead of his duties as Managing Director of Employer
       and Chief Operating Officer of the Group Company, Viragen Inc. During any
       period of suspension, Employee will not be entitled to work either on his
       own account or on behalf of any other person, business or company.

7.     OTHER INTERESTS

       Employee shall not (except with the prior written consent of the Board)
       accept any appointment to any office in relation to any body, whether
       corporate or not, or be directly or indirectly employed, engaged,
       concerned or interested in any other business or undertaking, provided
       that this shall not prohibit the holding (directly or

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       through nominees) of investments listed on the London Stock Exchange or
       in respect of which dealing takes place in the Alternative Investment
       Market on the London Stock Exchange or any recognised stock exchange
       provided that not more than 5 per cent of the issued shares or other
       securities of any class of any one company shall be so held without the
       prior sanction of a resolution of the Board. Employee shall immediately
       notify Employer of any actual or potential conflict of interest with the
       Employment including without limitation to the foregoing generality any
       transaction or dealing which involves, or might involve, a relative of
       Employee or any employee of such relative.

       Subject to any regulations issued by Employer, Employee shall not be
       entitled to receive or obtain directly or indirectly any discount, rebate
       or commission in respect of any sale or purchase of goods effected or
       other business transacted (whether or not by him) or by or on behalf of
       Employer and if he (or any firm or company in which he is interested)
       shall obtain any such discount, rebate or commission he shall account to
       Employer for the amount received by him (or a due proportion of the
       amount received by such company or firm having regard to the extent of
       his interest therein).

8.     HOURS AND PLACE OF WORK

       Employee agrees that he shall work such hours as are necessary for the
       proper performance of his duties, including any such hours which exceed
       the maximum weekly working time limit of 48 hours imposed by the Working
       Time Regulations 1998 or any re-enactment thereof. Employee shall work a
       minimum of 37.5 hours per week from 9.30am to 6pm Monday to Friday, with
       a break of one hour for lunch each day.

       Employee's place of work will be based principally at Employer's offices
       at Penicuik but Employer may require Employee to work at any place within
       the United Kingdom or elsewhere on a temporary basis. Employer may only
       change Employee's place of work on an indefinite basis subject to
       Employee's consent. Employee will be given reasonable notice of any
       change in his place of work. If Employee's principal place of work is
       changed to a location which is outside reasonable commuting distance from
       his home, the Employer will reimburse his reasonable removal costs,
       estate agents' and solicitors' fees in accordance with its Relocation
       Policy from time to time in force

       Employee undertakes to use reasonable endeavours to relocate his
       residence closer to Employer's offices, in which event the Employer will
       reimburse his reasonable relocation costs but always subject to the
       submission by the Employee of appropriate invoices, receipts and other
       supporting documentation consistent with the Employer's reimbursement
       policies and procedures.

9.     REMUNERATION

       Employee shall receive an annual salary during the Employment Term of
       (pound)120,000 U.K. Pounds. Employee's salary shall be payable in
       accordance with the Company's normal payroll process, currently monthly
       in arrears on or around the 18th day of each month. Employee may also be
       entitled to such fringe benefits, if any, that shall be made available to
       Employee further described herein. The remuneration in this clause shall
       be inclusive of any fees to which Employee may be entitled as a director
       of Employer or any Group Company.

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10.    FRINGE BENEFITS AND EXPENSES

       A.     EMPLOYEE PLANS

              Employee shall be eligible during the continuance of Employment to
              participate in such medical, hospitalisation, group health,
              accident, disability and life insurance schemes and plans, such
              pension, and such other employee benefit schemes to the same
              extent such plans and schemes are made generally available from
              time to time by Employer to all of its other similarly-situated
              employees; provided, however, Employer shall be under no
              obligation to make any of such plans or schemes available to its
              employees or continue any which currently or in the future exist,
              except as otherwise required by law. Entitlement to such benefits
              is subject always to:

              o      the terms and conditions of the schemes or arrangements
                     from time to time;

              o      the insurer of the scheme or arrangement honouring
                     Employer's claim in respect of Employee or his spouse or
                     children; and

              o      Employee's acceptance of such variations to his terms and
                     conditions of employment as may from time to time be
                     requested by Employer.

              All payments under the schemes or arrangements will be subject to
              such deductions as may be required by law and also a sum
              equivalent to any employer's National Insurance contributions
              which are payable by Employer in respect of any payment under the
              scheme or arrangements, as appropriate, and which are not
              reimbursed by the insurer under the scheme or arrangement.

              Where any payments are made under the permanent health insurance
              scheme or arrangement all other benefits provided to or in respect
              of Employee by the Employer will cease immediately (if they have
              not done so already) except those benefits for which the Employer
              receives reimbursement in full of the total cost to it of the
              benefit from the insurer under the appropriate scheme or
              arrangement.

       B.     CAR

              During the continuance of the Employment, the Employer shall
              provide to Employee for performance of Employee's duties on behalf
              of Employer as specified herein a car, of a size and type
              commensurate (in the opinion of the Board) with Employee's
              position for the time being. Employer shall pay all petrol,
              maintenance, insurance and other expenses related thereto.
              Employee will be permitted to use the car for reasonable private
              journeys. If Employee shall be convicted of any offence under the
              Road Traffic Acts or is involved in any accident involving the
              car, he shall forthwith notify the Board and supply such
              information in connection therewith as the Board may request.
              Employee shall at all times maintain a current full driving
              licence and shall not do or omit to do anything which would or
              might make void or prejudice any insurance policy maintained by
              Employer.

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       C.     OTHER EXPENSES

              Employer shall promptly pay directly or reimburse Employee for his
              reasonable out-of-pocket costs and expenses incurred in connection
              with the performance of his duties and responsibilities hereunder
              including but not limited to reasonable travel, accommodation and
              subsistence expenses incurred by Employee should the Employee be
              temporarily required to carry out his duties elsewhere, in the UK
              or abroad, than at his normal place of work but always subject to
              the submission by Employee of appropriate invoices, receipts and
              other supporting documentation, consistent with Employer's
              customary reimbursement policies and procedures.

       D.     DEDUCTIONS

              For the purposes of the Employment Rights Act 1996, sections
              13-27, Employee hereby authorises the Employer to deduct from his
              salary and/or any other sums due under this Agreement any sums due
              from him to Employer including, without limitation, any
              overpayments, loans or advances made to him by the Employer, and
              any losses suffered by the Employer as a result of any negligence
              or breach of duty by Employee.

11.    HOLIDAY

       Employer's holiday year runs from 1st January to 31st December. Employee
       shall be entitled to annual holiday (of not less than 20 days). Holidays
       may only be taken with advance permission from the Board. Employee may
       not carry any unused holiday entitlement forward to a subsequent holiday
       year. Holiday entitlement is accrued PRO RATA throughout the holiday
       year, depending on Employee's length of service within that year. Accrued
       holiday entitlement will be rounded up to the nearest whole day.

       Upon notice of termination of Employee's employment being served by
       either party, Employer may either require Employee to take any unused
       holidays accrued at that time during any notice period or may, at its
       discretion, make a payment in lieu of such holiday entitlement. Employee
       will be required to make a payment to Employer in lieu of any holiday
       taken in excess of Employee's holiday entitlement accrued at the date of
       termination of the Employment. Any sums so due may be deducted from any
       money owing to Employee.

12.    SICKNESS

       Without prejudice to the terms of clause 15, Employer shall continue to
       pay Employee's salary during any period of absence on medical grounds for
       up to a maximum period of 13 weeks in any period of 12 consecutive months
       (such twelve month period beginning on the first day of absence),
       provided that Employee shall from time to time if required:

       o      inform Employer without delay of any injury or incapacity;

       o      supply Employer with medical certificates covering any period of
              sickness or incapacity exceeding seven consecutive days (including
              weekends); and

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       o      undergo at Employer's expense a medical examination by a doctor
              appointed by Employer.

       Payment of Employee's salary pursuant to this clause 12 shall be made
       less any amount of Statutory Sick Pay or other benefits to which Employee
       may be entitled hereunder or under any relevant legislation.

       Once entitlement to salary under this clause 12 lapses, Employee shall
       have no right to any benefit or emolument from Employer except to any
       permanent health insurance benefit which may be payable in accordance
       with clause 10.

       If Employee's absence shall be occasioned by the actionable negligence of
       a third party in respect of which damages are recoverable, then all sums
       paid by Employer during the period of absence in terms of this clause 12
       shall constitute loans to Employee, who shall:

       o      forthwith notify Employer of all the relevant circumstances and of
              any claim, compromise, settlement or judgement made or awarded in
              connection therewith;

       o      if Employer so requires, refund to Employer such sum as Employer
              may determine, not exceeding the lesser of:

              (i)    the amount of damages recovered by him in respect of loss
                     of earnings during the period of absence under any
                     compromise, settlement or judgement; and

              (ii)   the sums advanced to him by Employer in respect of the
                     period of incapacity.

13.    FACILITIES

       Employer shall provide and maintain (or cause to be provided and
       maintained) such facilities, equipment, supplies and personnel as it
       reasonably determines is adequate for Employee's performance of his
       duties and responsibilities under this Agreement.

14.    PENSIONS

       Employer does not operate a pension scheme.

15.    TERMINATION OF EMPLOYMENT

       A      INCAPACITY

              For the purposes of this Agreement, Employee shall be deemed to be
              "Incapacitated" when, by reason of physical or mental illness or
              of injury, he is unable to perform substantially all of the duties
              and responsibilities required of him in connection with his
              employment hereunder. No incapacity shall be deemed to exist until
              after Employee shall be unable to perform his duties hereunder for
              ninety (90) consecutive days (the "Incapacity Period"). If

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              Employee shall have been incapacitated but shall have returned to
              work prior to the end of the Incapacity Period, any new incapacity
              commencing within thirty (30) days of the termination of the prior
              incapacity shall be a continuation of the prior incapacity, and
              the period of all such disabilities shall be added together to
              determine whether, or how much of, the Incapacity Period has
              elapsed.

              The Employment may be subject to termination by the Employer by
              notice if Employee becomes Incapacitated provided that if at any
              time during the currency of such notice Employee can provide a
              medical certificate satisfactory to the Board and to the effect
              that he has fully recovered his physical and/or mental health and
              that no recurrence of illness or incapacity can reasonably be
              anticipated, Employer shall withdraw the notice.

       B.     TERMINATION EVENTS

              Notwithstanding any provisions of this Agreement to the contrary,
              Employee's employment may be terminated by Employer with Cause (as
              hereinafter defined) effective upon the delivery of written notice
              to Employee. In addition, Employee's employment shall terminate
              upon Employee reaching the Employer's normal retirement age of 65.

       C.     DEFINITION OF CAUSE

              For purposes of this Agreement, "Cause" shall be: (a) conviction
              for fraud or criminal conduct (other than conviction of, or a plea
              of guilty to, a minor traffic offence), from which no appeal can
              be taken; (b) habitual drunkenness or drug addiction; (c) fraud or
              theft in respect of Employer; (d) material sanctions against
              Employee in his capacity as an employee of Employer by regulatory
              agencies governing Employer or against Employer because of
              wrongful acts or conduct of Employee which have a material adverse
              affect upon the Employer and its business; (e) material breach or
              default by Employee of any of the material terms or conditions of
              this Agreement, or the continuation of any breach or default by
              Employee for a period of seven (7) days following the date of
              receipt of written notice from Employer specifying the breach or
              default of Employee; (f) the resignation of Employee prior to the
              end of the Employment Term (in this last event, Employee's
              employment shall be deemed terminated with Cause on the date that
              he resigns); (g) disqualification as a director by reason of any
              order made under the Company Directors Disqualification Act 1986
              or any other enactment; (h) the bankruptcy or insolvency of
              Employee; or (i) gross misconduct or negligence of Employee.

       D.     TERMINATION WITHOUT CAUSE

              If Employee's employment is terminated by Employer without Cause
              as defined in this Section, Employee shall be given sixty (60)
              days written notice of termination by Employer and be entitled to
              receive two years compensation and fringe benefits/expenses as
              provided for in clause 9 & 10 hereof.

       E.     TERMINATION FOLLOWING A CHANGE OF CONTROL

                     (i)    In the event that a "Change of Control", as
                            hereinafter defined, of Employer is followed by a
                            related "Good Reason" as hereinafter

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                            defined at any time during the Employment Term,
                            Employee shall have the right to terminate his
                            employment under this Agreement upon thirty (30)
                            days written notice given at any time within one
                            year after the occurrence of such events, and such
                            termination of Employee's employment with Employer
                            pursuant to this Subsection 15E then, in any such
                            event, such termination shall be deemed to be a
                            Termination by Employer Other than for Cause and
                            Employee shall be entitled to such Compensation and
                            Benefits as set forth in Subsection 15D of this
                            Agreement.

                     (ii)   For purposes of this Agreement, a "Change of
                            Control" of Employer shall mean a change in the
                            legal person holding, directly or indirectly, the
                            shares which carry 50% or more of the voting rights
                            in either Employer or its holding company, for which
                            purpose "holding company" shall have the meaning
                            ascribed thereto by Section 736 of the Companies Act
                            1985.

                     (iii)  For the purposes of this Agreement, "Good Reason"
                            shall mean, without the Employee's express written
                            consent, the occurrence of any of the following
                            events after a Change in Control:

       I.     a reduction by the Employer of the Employee's basic rate of
              remuneration (excluding any performance related or discretionary
              bonuses);

       II.    the failure of the Employer to continue in effect any Employee
              benefit plan or compensation plan in which the Employee was
              participating following the Change in Control, unless the Employee
              is permitted to participate in other plans providing substantially
              comparable benefits, or the taking of any action by the Employer
              which would adversely affect the Employee's participation in or
              materially reduce benefits under any such plan, PROVIDED, HOWEVER,
              that changes affecting the participation or benefits of all
              similarly situated employees shall not be treated as Good Reason
              hereunder;

       III.   a materially adverse change in the level of the Employee's
              employment responsibilities, PROVIDED, HOWEVER, that changes in
              title or changes in the Group Company which employs the Employee
              shall not be treated as Good Reason hereunder; or

       IV.    a relocation of Employer's offices such that Employee would be
              required to relocate his primary residence to provide for a
              reasonable daily travel distance to such new location.

       This Subsection 15E will not apply where the Employee gives Employer his
       explicit written waiver stating that for the purposes of this Subsection
       15E a Change in Control shall not be deemed to have occurred. The
       Employee's participation in any negotiations or other matters in relation
       to a Change in Control shall in no way constitute such a waiver which can
       only be given by an explicit written waiver as provided in the preceding
       sentence.

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       F.     TERMINATION PROVISIONS

              If Employer becomes entitled to terminate the Employment pursuant
              to this clause 15, it shall be entitled (but without prejudice to
              its right subsequently to terminate the Employment on the same or
              any other ground) to suspend Employee on full pay for so long as
              it may think fit.

              Employer reserves the right to give Employee pay in lieu of any
              notice of termination (whether given by Employer or by Employee).
              For this purpose, Employee agrees that pay in lieu of notice will
              consist of his basic salary for the relevant period of notice and
              any bonus/commission/share of profit and any other emolument
              referable to the Employment. For the avoidance of doubt, the right
              of Employer to make a payment in lieu of notice does not give rise
              to any right of Employee to receive such a payment.

              The giving of any period of notice of termination (whether given
              by Employer or Employee), does not limit the Employer's right to
              suspend any of Employee's duties and powers under clause 6 and
              Employer shall be under no obligation to assign any duties to
              Employee and shall be entitled to exclude him from its premises.
              Throughout any such period of suspension, Employee shall continue
              to receive his normal salary and other contractual benefits to
              which he is entitled under this Agreement and shall not be
              entitled to work either on his own account or for any other
              person, company or business. Alternatively, Employer may, during
              the whole or part of such period of notice, require Employee to
              perform duties (including any modified duties arising from an
              exercise by Employer of its rights under clause 6) at such
              locations as the Company may require consistent with clause 8.

              On the termination of the Employment or on either Employer or
              Employee having served notice of such termination, Employee shall:

              o      at the request of Employer resign as a Director and/or from
                     any office held in Employer or any Group Company and shall
                     transfer without payment to Employer or as Employer may
                     direct, any shares or other securities held by Employee as
                     nominee or trustee for Employer or any Group Company
                     provided however that such resignation shall be without
                     prejudice to any claims which Employee may have against
                     Employer or any Group Company arising out of the
                     termination of the Employment; and

              o      forthwith deliver to Employer all materials within the
                     scope of clause 16 and all credit cards, cars, car keys and
                     other property of or relating to the business of Employer
                     or of any Group Company which may be in his possession or
                     under his power or control;

              and if Employee should fail to do so Employer is hereby
              irrevocably authorised to appoint some person in his name and on
              his behalf to sign any documents and do any things necessary or
              requisite to give effect thereto.

                                       9
<PAGE>   10
16.    NON-DISCLOSURE QF CONFIDENTIAL INFORMATION

       A.     CONFIDENTIAL INFORMATION

              Employee acknowledges that Employee has been informed that it is
              the policy of Employer to maintain as secret and confidential all
              information relating to (i) the financial condition, businesses
              and interests of Employer and its Group Companies, (ii) the
              systems, know-how, products, services, costs, inventions, patents,
              patent applications, formulae, research and development
              procedures, notes and results, computer software programs,
              marketing and sales techniques and/or programs, methods,
              methodologies, manuals, lists and other trade secrets heretofore
              or hereafter acquired, sold, developed and/or used by Employer and
              its Group Companies and (iii) the nature and terms of Employer's
              and its Group Companies' relationships with their respective
              customers, clients, suppliers, lenders, vendors, consultants,
              independent contractors and employees (all such information being
              hereinafter collectively referred to as "Confidential
              Information"), and Employee further acknowledges that such
              Confidential Information is of great value to Employer and its
              Group Companies and, in and by reason and as a result of
              Employee's employment by Employer, Employee will be making use of,
              acquiring and/or adding to such Confidential Information.
              Therefore, Employee understands that it is reasonably necessary to
              protect Employer's and its Group Companies' trade secrets, good
              will and business interests that Employee agree and, accordingly,
              Employee does hereby agree, that Employee will not directly or
              indirectly (except where authorised by the Board for the benefit
              of Employer and/or its Group Companies and/or as required in the
              course of his employment) at any time hereafter use for his own
              purposes or divulge or disclose for any purpose whatsoever to any
              persons, firms, corporations or other entities other than Employer
              or its Group Companies (hereinafter referred to collectively as
              "Third Parties"), or use or cause or authorise any Third Parties
              to use, or through any failure to exercise due care and diligence,
              cause any unauthorised disclosure of any such Confidential
              Information, except as otherwise required by law.

       B.     EMPLOYER'S MATERIALS

              In accordance with the foregoing, Employee furthermore agrees
              that:-

              (i)    Employee will at no time retain or remove from the premises
                     of Employer or its Group Companies any research and
                     development materials, drawings, notebooks, notes, reports,
                     formulae, software programs or discs or other containers of
                     software, manuals, data, books, records, materials or
                     documents of any kind or description for any purpose
                     unconnected with the strict performance of Employee's
                     duties with Employer; and

              (ii)   all such materials shall be and remain the property of the
                     Employer; and

              (iii)  upon the cessation or termination of Employee's employment
                     with Employer for any reason, Employee shall forthwith
                     deliver or cause to be delivered up to Employer any and all
                     research and development materials, drawings, notebooks,
                     notes, reports, formulae, software programs or discs

                                        10
<PAGE>   11

                     or other containers of software, manuals, data, books,
                     records, materials and other documents and materials in
                     Employee's possession or under Employee's control relating
                     to any Confidential Information or any property or
                     information which is otherwise the property of Employer or
                     its Group Companies.

17.    INVENTIONS AND OTHER INTELLECTUAL PROPERTY

       The parties foresee that Employee may make inventions or create other
       industrial or intellectual property in the course of his duties under
       this Agreement and agree that in this respect Employee has a special
       responsibility to further the interests of Employer and the Group
       Companies.

       Any discovery, development, invention, or improvement, design, process,
       formula, method, database, information, computer program, copyright work,
       semi conductor or other topography, copyright work, trade mark or trade
       name or get-up made, created, devised, developed or discovered by
       Employee during the continuance of the Employment (whether capable of
       being patented or registered or not and whether or not made or discovered
       in the course of the Employment) either alone or with any other person in
       connection with or in anyway affecting or relating to the business of
       Employer or any Group Company or capable of being used or adapted for use
       therein or in connection therewith ("WORKS") shall forthwith be disclosed
       to Employer and shall (subject to sections 39 to 43 Patents Act 1977)
       belong to and be the absolute property of Employer or such Group Company
       as Employer may direct.

       Employee if and whenever required so to do by Employer shall at the
       expense of Employer or such Group Company as Employer may direct:

       o      apply or join with Employer or such Group Company in applying for
              letters patent, registered design, design right, trade mark or
              other protection or registration in the United Kingdom and in any
              other part of the world for any Works; and

       o      execute all instruments and do all things necessary for vesting
              such works or patents, registered designs, design rights, trade
              marks or other protection or registration when obtained and all
              right, title and interest to and in the same absolutely and as
              sole beneficial owner in Employer or such Group Company or in such
              other person as Employer may specify; and

       o      sign and execute all such documents and do all such acts as the
              Company may reasonably require in connection with any proceedings
              in respect of such applications and any publication or application
              for revocation of such patents, registered designs, design rights,
              trade marks or other protection.

       Employee hereby irrevocably and unconditionally waives all rights under
       Chapter IV Copyright, Designs and Patents Act 1988 and any other moral
       rights which he may have in the Works or in connection with the
       authorship of any existing or future copyright work in the course of the
       Employment, in whatever part of the world such rights may be enforceable
       including, without limitation:

                                       11
<PAGE>   12

       o      the right conferred by section 77 of that Act to be identified as
              the author of any such work; and

       o      the right conferred by section 80 of that Act not to have any such
              work subjected to derogatory treatment.

       Employee hereby irrevocably appoints Employer to be his Attorney in his
       name and on his behalf to execute any such act and to sign all deeds and
       documents and generally to use his name for the purpose of giving to
       Employer the full benefit of this clause. Employee agrees that with
       respect to any third parties a certificate signed by any duly authorised
       officer of Employer that any act or deed or document falls within the
       authority hereby conferred shall be conclusive evidence that this is the
       case.

       Nothing in this clause shall be construed as restricting the rights of
       Employee or Employee under sections 39 to 43 Patents Act 1977.

18.    COVENANT - NOT-TO-COMPETE

       A.     DEFINITIONS

       For the purposes of clause 18B the following words have the following
       meanings:

       "COMPANY GOODS" means any product researched into, developed,
       manufactured, distributed or sold by Employer with which the Employee was
       materially concerned or for which he was responsible during the two years
       immediately preceding the Termination Date;

       "COMPANY SERVICES" means any services (including but not limited to
       technical and product support, technical advice and customer services)
       supplied by Employer with which the duties of Employee were materially
       concerned or for which he was responsible during the two years
       immediately preceding the Termination Date;

       "CONFIDENTIAL INFORMATION" has the meaning given to it in clause 16;

       "CUSTOMER" means any person, firm, company or other organisation
       whatsoever to whom or which Employer distributed, sold or supplied
       Company Goods or Company Services during the two years immediately
       preceding the Termination Date and with whom or which, during such
       period:

              (i)    Employee had material dealings in the course of his
                     employment; or

              (ii)   any employee who was under the direct or indirect
                     supervision of Employee had material dealings in the course
                     of his employment;

       but in the case of a firm, company or other organisation shall not
       include any division, branch or office of such firm, company or other
       organisation with which Employee and/or any such employee had no dealings
       during the said period;

       "INVESTOR" means any person, firm, company or other organisation
       whatsoever which has invested in the Employer or any Group Company during
       the two years

                                       12
<PAGE>   13

       immediately preceding the Termination Date and with whom or which, during
       such period, Employee had dealings in the course of his employment
       regarding such investment;

       "PROSPECTIVE CUSTOMER" means any person, firm, company or other
       organisation whatsoever with whom or which Employer shall have had
       negotiations or discussions regarding the possible distribution, sale or
       supply of Company Goods or Company Services during the 12 months
       immediately preceding the Termination Date and with whom or which, during
       such period:

              (i)    Employee shall have had material dealings in the course of
                     his employment by Employer; or

              (ii)   any employee who was under the direct or indirect
                     supervision of Employee shall have had material dealings in
                     the course of his employment by the Company;

       but in the case of a firm, company or other organisation shall not
       include any division, branch or office of such firm, company or other
       organisation with which Employee and/or any such employee had no dealings
       during the said period;

       "RESTRICTED AREA" means:

              (i)    Scotland and;

              (ii)   as Employee and Employer acknowledge the Employer's
                     intention is to compete in a worldwide market, any other
                     country in the world where, on the Termination Date,
                     Employer was engaged in the research into, development,
                     manufacture, distribution, sale or supply or otherwise
                     dealt with Company Goods or Company Services or any other
                     country in the world where Employer during the 12 months
                     immediately preceding the Termination Date shall have had
                     negotiations or discussions regarding the possible research
                     into development, manufacture, distribution sale or supply
                     or other dealings with Company Goods or Company Services;

       "RESTRICTED GOODS" means any product of the same type or materially
       similar to Company Goods;

       "RESTRICTED SERVICES" means any services of the same type or materially
       similar to Company Services;

       "RESTRICTED PERIOD" means the period of 24 months immediately following
       the Termination Date;

       "SENIOR EMPLOYEE" means an employee of the Company who in the opinion of
       the Company is a key employee to the Company and who earns a salary of at
       least (pound)20,000 per annum at the Termination Date;

       "TERMINATION DATE" means the date of termination of the Employment.

                                       13
<PAGE>   14

       B.     RESTRICTIONS

       Employee hereby undertakes with Employer that he will not either during
       the Employment nor during the Restricted Period without the prior written
       consent of Employer whether by himself, through his employees or agents
       or otherwise howsoever and whether on his own behalf or on behalf of any
       other person, firm, company or other organisation, directly or
       indirectly:

       (i)    in competition with Employer within the Restricted Area, be
              employed or engaged or otherwise interested in the business of
              researching into, developing, manufacturing, distributing,
              selling, supplying or otherwise dealing with Restricted Goods or
              Restricted Services;

       (ii)   in competition with Employer, in respect of Restricted Goods or
              Restricted Services, solicit business from or canvass any
              Customer, Prospective Customer;

       (iii)  in competition with Employer, in respect of Restricted Goods or
              Restricted Services, accept orders from, or have any business
              dealings with, any Customer or Prospective Customer;

       (iv)   solicit or induce or endeavor to solicit or induce any person who,
              on the Termination Date, was a Senior Employee of Employer with
              whom Employee had dealings during the last 12 months of the
              Employment to cease working for or providing services to Employer,
              whether or not any such person would thereby commit a breach of
              contract;

       (v)    employ or otherwise engage in the business of researching into,
              developing, manufacturing, distributing, selling, supplying or
              otherwise dealing with Restricted Goods or Restricted Services any
              person who, during the 12 months preceding the Termination Date,
              was employed or otherwise engaged by Employer and who by reason of
              such employment or engagement is in possession of any trade
              secrets or Confidential Information relating to the business of
              Employer or who has acquired influence over its Customers and
              Prospective Customers (defined in clause 18A, but so that
              references to Employee shall be replaced by references to the
              relevant employee);

       (vi)   in competition with Employer seek funding or investment from an
              Investor.

       C.     LIMITATION OF SUSPENSION

       If Employer exercises its right to suspend Employee's duties and powers
       under clause 6 during any period after notice of termination of the
       Employment has been given by Employer or Employee, the aggregate of the
       period of the suspension and the period after the Termination Date for
       the which the covenants in sub-clause 18B shall apply shall not exceed 12
       months and, if the aggregate of the two periods would exceed 12 months,
       the period after the Termination Date for which the covenants in
       sub-clause 18B shall apply shall be reduced accordingly.

                                       14
<PAGE>   15
       D.     GROUP COMPANIES

       Clause 18B shall also apply as though references to "Employer" include
       references to each Group Company in relation to which Employee has in the
       course of his duties for Employer or by reason of rendering services to
       or holding office in such Group Company:

       (i)    acquired knowledge of its trade secrets or Confidential
              Information; or

       (ii)   had personal dealings with its Customers or Prospective Customers;
              or

       (iii)  supervised directly or indirectly employees having personal
              dealings with its Customers or Prospective Customers,

       but so that references in clause 18A to "Employer" shall for this purpose
       be deemed to be references to the relevant Group Company. The obligations
       undertaken by Employee pursuant to this clause 18D shall, with respect to
       each such Group Company, constitute a separate and distinct covenant and
       the invalidity or unenforceability of any such covenant shall not affect
       the validity or enforceability of the covenants in favour of any other
       Group Company or Employer.

       E.     ASSOCIATION

       Employee hereby undertakes with Employer that he will not at any time:

       (i)    during the continuance of the Employment or after the Termination
              Date engage in any trade or business or be associated with any
              other person, firm or company engaged in any trade or business
              using the name(s) Viragen or incorporating the word(s) Viragen;

       (ii)   after the termination of the Employment in the course of carrying
              on any trade or business, claim, represent or otherwise indicate
              any present association with Employer or any Group Company or for
              the purpose of carrying on or retaining any business or custom,
              claim, represent or otherwise indicate any past association with
              Employer or any Group Company to its detriment.

       F.     SEVERABILITY

       The restrictions in this clause 18 (on which Employee has had the
       opportunity to take independent advice, as Employee hereby acknowledges)
       are separate and severable restrictions and are considered by the parties
       to be reasonable in all the circumstances. It is agreed that if any such
       restrictions, by themselves, or taken together, shall be adjudged to go
       beyond what is reasonable in all the circumstances for the protection of
       the legitimate interests of Employer or a Group Company but would be
       adjudged reasonable if part or parts of the wording thereof were deleted,
       the relevant restriction or restrictions shall apply with such
       deletion(s) as may be necessary to make it or them valid and effective.

                                       15
<PAGE>   16

19.    EMPLOYEE'S DISCLOSURES AND REPRESENTATIONS AND WARRANTIES

       Employee hereby acknowledges, represents and warrants to, and/or agrees
       with, Employer as follows:

       (a)    That Employee has full right, power and authority to perform all
              obligations under this Agreement.

       (b)    Employee hereby agrees to indemnify and hold harmless Employer and
              its shareholders, directors, officers, employees and agents from
              and against any and all loss, damage, liability, cost or expense
              (including reasonable legal fees and costs due to or arising out
              of any material inaccuracy in, or material breach of, any material
              representation, warranty or covenant of Employee contained herein.

20.    INDEPENDENT ADVICE

       Employer and Employee agree that each of them have been, or were advised
       and fully understand that they are entitled to be represented by
       independent legal representation with respect to all matters contemplated
       herein from the commencement of negotiations at all times through to the
       execution hereof.

21.    LAW APPLICABLE

       This Agreement shall be governed by and construed in accordance with the
       law of Scotland.

22.    NOTICES

       Any notice or other document to be given under this Agreement shall be in
       writing and may be given personally to Employee or to the Secretary of
       Employer (as the case may be) or may be sent by first class post or other
       fast postal service or by facsimile transmission to, in the case of
       Employer, its registered office for the time being and in the case of
       Employee either to his address shown on the face hereof or to his last
       known place of residence.

       Any such notice shall be deemed served when in the ordinary course of the
       means of transmission it would first be received by the addressee in
       normal business hours.

23.    COLLECTIVE AGREEMENTS

       There are no collective agreements applicable to the Employment.

24.    DATA PROTECTION

       Employee acknowledges and agrees that Employer is permitted to hold
       personal information about Employee as part of its personnel and other
       business records and may use such information in the course of Employee's
       business. Employee agrees that Employer may disclose such information to
       third parties in the event that such disclosure is in Employer's view
       required for the proper conduct of Employer's

                                       16
<PAGE>   17

       business or that of any Group Company. This clause applies to information
       held used or disclosed in any medium.

25.    SUCCESSION

       This Agreement shall inure to the benefit of and be binding upon the
       parties hereto and their respective successors in interest of any kind
       whatsoever; provided, however, that Employee acknowledges and agrees that
       he cannot assign, delegate or transfer any of his rights, duties,
       responsibilities or obligations hereunder to any other person or entity.

26.    ENTIRE AGREEMENT

       This Agreement constitutes the entire agreement between the parties with
       respect to, and supersedes any and all prior agreements, both oral and
       written, between the parties hereto, except as related to rights of the
       Employee and his statutory waiver of claims on expiry of this contract.
       This Agreement can only be amended in writing.

27.    NO WAIVER

       A waiver of any breach of any term, provision or covenant contained
       herein shall not be deemed a continuing waiver or a waiver of any future
       or past breach. No oral waiver shall be binding.

28.    INDEMNITY OF EMPLOYEE

       Employer shall indemnify and hold harmless Employee from and against any
       and all claims, judgments, fines, penalties, liabilities, losses, costs
       and expenses (including reasonable legal fees and costs) asserted against
       or incurred by Employee as a result of acts or omissions of Employee
       taken or made in the course of performing his duties for Employer or by
       reason of Employee acting or having acted as a director or officer of
       Employer, to the maximum extent permitted by law, (including the
       advancement of expense provisions thereof); provided, however, that such
       indemnity shall not apply to acts or omissions of Employee which
       constitute misconduct, gross negligence or which were intended by
       Employee to personally benefit Employee, directly or indirectly, at the
       expense of Employer, unless the matter which benefits Employee was first
       fully disclosed to the Board of Directors of Employer and approved by
       said Board.

                                       17
<PAGE>   18
29.    GRIEVANCE PROCEDURE

       If Employee wishes to obtain redress of any grievance relating to his
       employment or is dissatisfied with any reprimand, suspension or other
       disciplinary step taken by the Employer, he shall apply in writing to the
       Chairman of the Board, setting out the nature and details of any such
       grievance or dissatisfaction.

IN WITNESS WHEREOF, these presents printed on this and the 17 preceding pages
are executed as follows:-

Signed for and on behalf of the said Viragen
(Scotland) Limited
At Plantation, Florida, USA
On 18 May,
Two Thousand and One:-

Witness  Dennis W. Healey                /s/ Gerald Smith
         -----------------------------   ---------------------------------------
                                         Gerald Smith
Address                                  Chairman & CEO
        ------------------------------

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

Occupation  Executive Vice President/CFO

Signed by the said Dr. Donald Magnus Nicolson
At Plantation, Florida, USA

On 18 May,
Two Thousand and One:-

Witness  Jose I Ortega                   /s/ Donald Magnus Nicolson
         -----------------------------   ---------------------------------------
                                         Dr. Nicolson

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

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

Occupation Controller
           ---------------------------

                                       18
<PAGE>   19

SCHEDULE

The following constitutes the statement of the particulars of employment of
Employee issued pursuant to the Employment Rights Act 1996. The particulars are
those which apply on the date of this Agreement.

NAME OF EMPLOYER - the Company as defined on page 1 above.

NAME OF EMPLOYEE - the Employee as defined on page 1 above.

DATE OF COMMENCEMENT OF CONTINUOUS PERIOD OF EMPLOYMENT - see clause 4

SCALE OR RATE OF REMUNERATION OR METHOD OF CALCULATING REMUNERATION -
see clause 9

INTERVALS AT WHICH REMUNERATION IS PAID - monthly - see clause 9

HOURS OF WORK - see clause 8

HOLIDAYS (INCLUDING PUBLIC HOLIDAYS) AND HOLIDAY PAY - see clause 11

SICKNESS OR INJURY AND SICK PAY - see clause 12

PENSION - see clause 14

NOTICE - see clause 3 and 15

JOB TITLE - see clause 6

PLACE OF WORK - see clause 8. The Employer's address is as stated on page 1.

COLLECTIVE AGREEMENTS - Employer is not a party to any collective agreements
which affect Employee's employment.

WORKING OVERSEAS - Employee is not under any obligation to work overseas for
period exceeding one month and accordingly there are no particulars to be
entered in this regard.

DISCIPLINARY AND GRIEVANCE PROCEDURES - see Employer's Disciplinary Procedure.
Grievance provisions - see clause 29.

                                       19

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