Exhibit 10(s)

                             EMPLOYMENT AGREEMENT

    THIS EMPLOYMENT AGREEMENT (hereinafter referred to as the "Agreement") is 
made this 16th day of May, 1996, in Baltimore, Maryland, by and between 
CHESAPEAKE BIOLOGICAL LABORATORIES, INC., a Maryland corporation (hereinafter 
referred to as the "Corporation"), and JOHN C. WEISS, III (hereinafter 
referred to as the "Employee").

    1.   CERTAIN DEFINITIONS.  In addition to the other words and terms 
defined elsewhere in this Agreement, as used herein, and particularly as used 
in Sections 10, 11 and 12 hereof, the terms set forth below shall have the 
following meanings, respectively:3

         (a)  GOOD REASON.  "Good Reason" shall mean the occurrence of any of 
the following (without the Employee's express written consent):

              (i)    a failure by the Corporation to comply with any material 
provision of this Agreement which has not been cured within ten (10) days 
after notice of such noncompliance has been given by the Employee to the 
Corporation;

              (ii)   any purported termination of the Employee's employment 
(except upon death of the Employee) which is not effected pursuant to a 
Notice of Termination satisfying the requirements of Section 1(c) hereof (and 
for purposes of this Agreement no such purported termination shall be 
effective);

              (iii)  without limiting the generality of (i) immediately 
above, any material diminution in the title or the scope of the Employee's 
responsibilities or duties with or for the Corporation from those of the 
Employee immediately following the commencement of the Initial Term, except 
in connection with the termination by the Corporation of his employment for 
disability or cause, or as a result of his death, or termination by the 
Employee of his employment pursuant to Section 11(b) (Discretionary) hereof;

              (iv)   the taking of any action by the Corporation which would 
adversely affect the Employee's participation in any benefit plans to which 
the Employee is otherwise entitled under the terms of this Agreement; and

              (v)    a relocation of the Corporation's principal offices or 
the Employee's day-to-day place of work to a location outside of the 
Baltimore, Maryland Metropolitan area.

         (b)  NOTICE OF TERMINATION.  "Notice of Termination" shall mean a 
notice which shall indicate the specific termination provision in this 
Agreement relied upon and shall set forth in reasonable detail the facts and 
circumstances claimed to provide a basis for termination of the Employee's 
employment and the Employment Term under the provision so indicated.

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         (c)  DATE OF TERMINATION.  "Date of Termination" shall mean (i) if 
the Employee's employment is terminated by his death, the date of his death; 
(ii) if the Employee's employment is terminated pursuant to Section 10(b)  
(Disability), thirty (30) days after Notice of Termination is given (provided 
that the Employee shall not have returned to the performance of his duties on 
a full-time basis during such thirty (30) day period); (iii) if the 
Employee's employment is terminated pursuant to Section 10(c) (Cause), the 
date specified in the Notice of Termination; (iv) if the Employee terminates 
his employment pursuant to Section 11(b) (Discretionary) sixty (60) days 
after delivery of Notice of Termination; and (v) if the Employee's employment 
is terminated by the Employee or the Corporation for any other reason, the 
date on which a Notice of Termination is given; provided that if within 
thirty (30) days after any Notice of Termination is given the party receiving 
such Notice of Termination notifies the other party that a dispute exists 
concerning the termination, the Date of Termination shall be the date on 
which the dispute is finally determined, either by mutual written agreement 
of the parties, by a binding and final arbitration award or by a final 
judgment, order or decree of a court of competent jurisdiction (the time for 
appeal therefrom having expired and no appeal having been perfected); 
provided further that the disputing party shall not be entitled to retain any 
benefits derived directly or indirectly by disputing the termination if such 
dispute is determined to have been without merit.

    2.   EMPLOYMENT.  The Corporation hereby employs the Employee and the 
Employee hereby accepts employment with the Corporation upon the terms and 
conditions hereinafter set forth.

    3.   TERM.  Unless further extended or sooner terminated or as expiring 
as provided herein, the employment of the Employee as herein provided will be 
for an initial term (the "Initial Term") commencing on the date hereof and 
ending on the date which (the "Initial Term Expiration Date") which is the 
second (2nd) yearly  anniversary of the date hereof; provided, however, that 
the Corporation shall have the full right, power and option to elect (the 
"Early Expiration Option") that the Initial Term Expiration Date be changed 
from the date which is the second (2nd) yearly anniversary of the date hereof 
to March 31, 1997, in the event either (i) the Expansion Plan Hurdle (as 
hereinafter defined) has not been met and satisfied on or before December 31, 
1996 and the Corporation shall have delivered to the Employee a notice to 
that effect prior to January 31, 1997; or (ii) on or prior to March 31, 1997, 
the Corporation, through its Board of Directors (meeting without the Employee 
if then a member of the Board of Directors) shall have determined, based on 
its reasonable business judgement, that significant and sustained downturn in 
the financial performance or condition of the Corporation has occurred, or 
that events or circumstances have occurred or arisen which render a 
significant and sustained downturn in the financial performance or condition 
of the Corporation probable; and the Corporation shall have delivered notice 
of such determination to the Employee. In the event that the Corporation 

                                      11




does not elect to exercise the Early Expiration Option as hereinabove 
provided, the term of the Employee's employment hereunder will continue 
beyond March 31, 1997, for the balance of the Initial Term, and shall be 
automatically extended beyond the Initial Term for indefinite successive 
three (3) year renewal terms (each a "Renewal Term" and together the "Renewal 
Terms") thereafter unless and until not less than one hundred eighty (180) 
days prior to the last day of the Initial Term or five hundred forty-five 
(545) days prior to the last day of any Renewal Term then in effect, the 
Corporation shall have delivered to the Employee, or the Employee shall have 
delivered to the Corporation, written notice that the term of the Employee's 
employment hereunder will not be so extended, in which case the Employee's 
employment hereunder will expire as of the last day of the Initial Term or 
the Renewal Term, as the case may be, then in effect.  The Initial Term, 
together with all Renewal Terms, is hereinafter referred to as the 
"Employment Term." For purposes hereof, "Expansion Plan Hurdle" shall mean 
that the Corporation shall have in place arrangements on terms and conditions 
satisfactory to the Board of Directors of the Corporation for expansion of 
the Corporation's manufacturing facilities located at the Seton Industrial 
Park, Baltimore, Maryland, together with all third party debt and/or equity 
financing required in connection therewith or attendant thereto, as such 
plans for expansion are contemplated by the Application dated March 22, 1996, 
submitted by the Corporation to the Maryland Industrial Financing Authority, 
and the Board of Directors shall have adopted a resolution to that effect.  
Determination as to whether the Expansion Plan Hurdle has been met shall be 
made by the Board of Directors (meeting without the Employee if then a member 
of the Board of Directors) in its reasonable business judgement.

    4.   DUTIES.  At all times during the Employment Term, the Corporation 
agrees to engage the Employee as President of the Corporation and the 
Employee agrees to perform such services as are customarily rendered by 
Presidents of publicly held companies comparable to the Corporation, together 
with such other executive services as shall from time to time be reasonably 
assigned to him by the Board of Directors of the Corporation, consistent with 
the terms of this Agreement and the stature and position of Employee. In 
addition, at all times during the Employment Term, the Corporation, through 
its Board of Directors, agrees to nominate the Employee as a member of the 
Board of Directors of the Corporation.  

    5.   BASE SALARY.  During the Employment Term, the Corporation shall pay 
to the Employee a base salary (the "Base Salary") for services rendered under 
this Agreement at an Initial rate of One Hundred Thirty Thousand Dollars 
($130,000) per year in accordance with the Corporation's normal payroll 
policies and subject to required withholding.  The Corporation may, through 
action of its Board of Directors or the Compensation Committee of the Board 
of Directors if then responsible for such matters, at any time and from time 
to time increase the amount of the Base Salary payable to Employee hereunder, 
and having done so the 

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Corporation may thereafter reduce the Base Salary payable to Employee, but 
the Corporation may not at any time reduce the Base Salary payable to 
Employee below One Hundred Thousand Dollars ($100,000) per year; provided, 
however, that the foregoing to the contrary notwithstanding, the Base Salary 
applicable to the Employee may be reduced below One Hundred Thousand Dollars 
($100,000) (but in no event to less than Eighty Five Thousand Dollars 
($85,000) (the "Minimum Base Salary")) only in connection with a negative 
adjustment to the base salary applicable to all officer level employees of 
the Corporation based upon a reasonable determination by the Board of 
Directors either that significant and sustained downturn in the financial 
performance or condition of the Corporation has occurred, or that events or 
circumstances have occurred or arisen which render a significant and 
sustained downturn in the financial performance or condition of the 
Corporation probable; and further provided that such negative adjustment is 
made applicable PRO RATA to all such officer level employees, except to the 
extent which the Minimum Base Salary applicable to the Employee, or to the 
extent which any similar minimum base salary constraints applicable to any 
such other officer level employees, renders a PRO RATA adjustment impossible. 
Compensation of the Employee by payment of the Base Salary shall not be 
deemed exclusive and shall not in any way limit or reduce any other 
obligation of the Corporation hereunder, and no other compensation, benefit 
or payment hereunder shall in any way limit or reduce the obligation of the 
Corporation to pay the Base Salary to the Employee hereunder.

    6.   INCENTIVE COMPENSATION.  In addition to payment of the Base Salary, 
the Employee shall be entitled to such other and additional compensation as 
may be determined by the Board of Directors or Compensation Committee of the 
Board of Directors from time to time.  Any such compensation, in the form of 
cash paid or payable to the Employee, as a bonus or as part of a profit or 
incentive cash compensation program established from time to time, shall be 
hereinafter referred to as "Incentive Compensation"; and any payment made or 
to be made pursuant to any arrangement actually established and in place from 
time to time in respect of payment of Incentive Compensation in generally or 
specifically defined amounts over a stated future period of time (e.g., 
pursuant to an arrangement established from time to time in respect of the 
payment of Incentive Compensation in cash over a given forward looking period 
based on past performance of the Employee and/or the Corporation) shall be 
hereinafter referred to as "Defined Incentive Compensation."

    7.   INSURANCE.  During the term of the Employee's employment with the 
Corporation, the Corporation shall provide the Employee with group life, 
health and disability insurance coverage comparable to the coverages 
generally furnished by the Corporation to its senior level executive 
personnel (other than the Chief Executive Officer, who may be entitled to 
additional Benefits) from time to time.  The Corporation at all times shall 
be free to purchase insurance up to an amount of One Million Dollars 
($1,000,000.00) upon the life of Employee naming the 

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Corporation or its designee as beneficiary, and Employee agrees to cooperate 
fully in applying for such insurance, including submitting to medical 
examinations.

    8.   EXTENT OF SERVICE.  During the Employment Term, the Employee shall 
diligently devote his full business time, attention and energies to the 
performance of his duties under this Agreement and shall exert his best 
efforts in furtherance of the business of the Corporation.

    9.   EXPENSES.  The Employee is authorized to incur reasonable expenses 
for promoting the business of the Corporation, including expenses for meals, 
travel and other similar items.  The Corporation shall reimburse the Employee 
for all such expenses upon the presentation to the Corporation by the 
Employee, from time to time, of an itemized accounting for such expenditures, 
and provided that the Corporation, in its reasonable judgment, concurs that 
such expenses were incurred by the Employee in promoting the business of the 
Corporation.

    10.  TERMINATION BY CORPORATION WITHOUT BREACH.  The Employee's 
employment hereunder and the Employment Term may be (or, upon the death of 
the Employee, shall be deemed to have been) terminated by the Corporation, 
without any breach of this Agreement only under the following circumstances:

         (a)  DEATH.  The Employee's employment hereunder and the Employment 
Term shall terminate upon his death, whereupon the Employee (or his spouse or 
estate) shall be entitled to the compensation and benefits described in 
Section 12(a) of this Agreement.

         (b)  DISABILITY.  In the event that the Employee shall become 
disabled by accident or by illness so as to be unable to perform the duties 
required of him under this Agreement for a period of one hundred eighty (180) 
consecutive days, the Corporation may terminate the Employee's employment 
hereunder and the Employment Term. Any two periods of time during which 
Employee is disabled (which periods are separated by no more than thirty (30) 
calendar days during which Employee is able to perform the duties required 
under this Agreement) shall, along with the intervening period during which 
the Employee is able to perform services, be considered one continuous period 
of disability. Upon any termination of the Employee pursuant to this Section 
10(b) as a result of disability, the Employee shall be entitled to the 
compensation and benefits described in Section 12(b) hereof.

         (c)  DISCHARGE FOR CAUSE.  The Corporation may terminate the 
Employee's employment hereunder and the Employment Term for Cause. For 
purposes of this Agreement, the Corporation shall have "Cause" to terminate 
the Employee's employment hereunder and the Employment Term upon (i) the 
willful and continued failure by the Employee to substantially perform his 
duties hereunder (other than any such failure resulting from the Employee's 
incapacity 

                                      14




due to physical or mental illness) after demand for substantial performance 
is delivered by the Corporation that specifically identifies the manner in 
which the Corporation believes the Employee has not substantially performed 
his duties, or (ii) the willful engaging by the Employee in misconduct 
(including any act of fraud or moral turpitude) which causes or is likely to 
cause material injury to the Corporation, monetarily or otherwise (including 
material injury to the reputation of the Corporation), or (iii) the 
conviction of the Employee of a felony and the expiration of any period of 
appeal therefrom without dismissal of the charge, or (iv) the willful 
violation by the Employee of the provisions of this Agreement. For purposes 
of this subsection, no act, or failure to act, on the Employee's part shall 
be considered "willful" unless done, or omitted to be done, by him not in 
good faith and without reasonable belief that his action or omission was in 
the best interest of the Corporation.  Notwithstanding the foregoing, the 
Employee shall not be deemed to have been terminated for Cause without (i) 
reasonable notice to the Employee setting forth the reasons for the 
Corporation's intention to terminate for Cause, (ii) an opportunity for the 
Employee, together with his counsel, to be heard before the highest ranking 
officer of the Corporation other than the Employee, and (iii) delivery to the 
Executive of a Notice of Termination as defined in Section 1(c) from the 
Corporation finding that, in the good faith opinion of the highest ranking 
executive of the Corporation other than the Employee, the Employee was guilty 
of conduct set forth above in clause (i), (ii), (iii) or (iv) of the 
preceding sentence, and specifying the particulars thereof in detail. As 
provided in Section 12(c) hereof, upon termination of the Employee for cause 
pursuant to this Section 10(d), the Employee shall be entitled to no further 
compensation under this Agreement, except payment of the Base Salary and 
Defined Incentive Compensation payable through the Date of Termination. 
Additionally, as and to the extent provided for in option plans established 
by the Corporation from time to time (including the Corporation's First 
Incentive Stock Option Plan, Second Incentive Stock Option Plan and Third 
Incentive Stock Option Plan), options previously issued but then not 
exercised will terminate and lapse immediately upon termination of the 
Employee and the Employment Term for cause.

    Any termination of the Employee's employment and the Employment Term by 
the Corporation under this Section 10 (other than termination upon death of 
the Employee pursuant to Section 10(a)) shall be communicated by written 
Notice of Termination to the Employee.

    11.  TERMINATION BY THE EMPLOYEE WITHOUT BREACH.  The Employee may 
terminate (or, upon his death, shall be deemed to have terminated) his 
employment hereunder and the Employment Term, without any breach of this 
Agreement, only under the following circumstances:

         (a)  GOOD REASON.  The Employee may terminate his employment and the 
Employment Term hereunder for Good Reason 

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arising at any time.  In the event of termination by the Employee of his 
employment and the Employment Term pursuant to this Section 11(a), the 
Employee shall be entitled to the compensation and benefits provided for 
under Section 12(d) hereof.

         (b)  DISCRETIONARY.  The Employee may terminate his employment and 
the Employment Term hereunder for any reason or for no reason, effective  
upon the expiration of sixty (60) days after delivery of Notice of 
Termination to the Corporation, during which period Employee shall continue 
to perform his duties hereunder. Upon any termination by the Employee of his 
employment and the Employment Term pursuant to this Section 11(b), the 
Employee shall be entitled to the benefits and compensation described in 
Section 12(e) hereof.

         (c)  DEATH.  The Employee's employment hereunder and the Employment 
Term shall terminate upon his death, whereupon the Employee (or his spouse or 
estate) shall be entitled to the compensation and benefits described in 
Section 12(a) hereof.

    Any termination by the Employee of his employment and the Employment Term 
pursuant to this Section 11 (other than termination upon his death pursuant 
to Section 11(c) hereof) shall be communicated by written Notice of 
Termination to the Corporation.

    12.  COMPENSATION UPON TERMINATION OR DURING DISABILITY.

         (a)  DEATH.  If the Employee's employment is terminated by his 
death, the Corporation shall pay to the Employee's spouse, or if he leaves no 
spouse, to his estate, the full Base Salary and Defined Incentive 
Compensation which the Employee would otherwise have been entitled to receive 
pursuant to Section 5 hereof until the end of the second (2nd) full calendar 
month following the month during which the death of the Employee occurred.  
Such payments shall be made in accordance with the Corporation's normal 
payroll policy, as and when such payments would have been otherwise made had 
the death of the Employee not occurred.

         (b)  DISABILITY.  During any period that the Employee fails to 
perform his duties hereunder as a result of incapacity due to physical or 
mental illness, the Employee shall continue to receive his full Base Salary 
and Defined Incentive Compensation at the rate or rates then in effect for 
such period until his employment is terminated for disability pursuant to 
Section 10(b) hereof, provided that payments so made to the Employee during 
the first 180 days of such period shall be reduced by the sum of the amounts, 
if any, payable to the Employee at or prior to the time of any such payment 
under disability benefit plans of the Corporation and which were not 
previously applied to reduce any such payment.

         (c)  CAUSE.  If the Employee's employment shall be terminated for 
Cause pursuant to Section 10(c) hereof, the Corporation shall pay the 
Employee his full Base Salary and 

                                      16




Defined Incentive Compensation through the Date of Termination at the rate or 
rates in effect at the time Notice of Termination is given, and the 
Corporation shall have no further obligations to the Employee under this 
Agreement. Additionally, as and to the extent provided for in option plans 
established by the Corporation from time to time (including the Corporation's 
First Incentive Stock Option Plan, Second Incentive Stock Option Plan and 
Third Incentive Stock Option Plan), options previously issued but then not 
exercised will terminate and lapse immediately upon termination of the 
Employee and the Employment Term for cause.

         (d)  BREACH/GOOD REASON.  If (i) the Corporation shall terminate the 
Employee's employment and the Employment Term in breach of this Agreement (it 
being understood that a purported termination pursuant to Section 10(b) 
(Disability) or 10(c) (Cause) hereof which is disputed and finally determined 
not to have been proper shall be a termination by the Corporation in breach 
of this Agreement), or (ii) the Employee shall terminate his employment and 
the Employment Term at any time for Good Reason pursuant to Section 11(c) 
hereof, then:

              (w)  the Corporation shall pay the Employee his full Base 
Salary and Defined Incentive Compensation through the Date of Termination at 
the rate or rates in effect at the time Notice of Termination is given; and

              (x)  in lieu of any further salary payments to the Employee for 
periods subsequent to the Date of Termination, the Corporation shall pay as 
severance pay to the Employee an amount equal to (i) the Employee's average 
aggregate annual cash compensation (including Base Salary plus Incentive 
Compensation (inclusive of Defined Incentive Compensation)) computed on the 
basis of the Employee's earnings from the Corporation during each of the then 
immediately preceding two (2) consecutive periods of twelve (12) complete 
calendar months (or, at the option of the Employee, the immediately preceding 
two (2) consecutive complete calendar years) multiplied by (ii) the number 
two (2), such payment to be made in three (3) substantially equal consecutive 
monthly installments, commencing on the first day of the calendar month 
immediately following the month during which the Date of Termination occurred 
and continuing on the first day of each of the two calendar months 
thereafter; and

              (y)  the Corporation shall pay all other damages to which the 
Employee may be entitled as a result of such termination, including damages 
for any and all loss of benefits to the Employee under the Corporation's 
employee benefit plans (other than Incentive Compensation as defined in 
Section 6 above), which the Employee would have received if the Employment 
Term not been so terminated and had the Employee's employment continued until 
the expiration of the Initial Term or Renewal Term, as the case may be, then 
in effect (including specifically but without limitation the benefits which 
the Employee would have been entitled to receive pursuant to any retirement 
income plan or arrangement had his employment continued for such period at 
the 

                                      17




rate of compensation specified herein), and including all legal fees and 
expenses incurred by him as a result of such termination; and

              (z)  any and all options, rights, warrants or shares of 
restricted stock of the Corporation held by the Employee or in which the 
Employee has an interest, restricted or otherwise, as of the Date of 
Termination shall, notwithstanding any provisions thereof to the contrary, 
automatically and without further action of the Board of Directors be deemed 
to have become fully vested and immediately exercisable (which may be 
effected through delivery of shares of the Corporation's stock held by the 
Employee, valued at market value, in payment of the exercise price) by the 
Employee (or in the case of restricted stock, all restrictions shall be 
deemed to have lapsed). In addition, the term of any and all options, rights 
or warrants held by the Employee in respect of any equity securities of the 
Corporation shall, notwithstanding any provisions thereof to the contrary, 
automatically and without further action of the Board of Directors be deemed 
to expire on the date which is the later of (i) the date provided for therein 
and (ii) the first yearly anniversary of the Date of Termination. The terms 
of this Agreement, and particularly the terms of the two (2) immediately 
preceding sentences, shall be controlling to the extent inconsistent with the 
terms of any plan or arrangement pursuant to which any such options, rights, 
warrants or restricted stock are or were issued; except that, in the case of 
any such options which are incentive stock options intended to be issued 
pursuant to Section 422A of the Internal Revenue Code of 1986, as amended 
(the "Code"), the provisions of this Agreement shall be subject to the 
limitations and requirements of the Code, and any terms hereof which would be 
construed under the Code as an amendment to such options (and therefore 
jeopardizing the status of those options as incentive stock options under 
Section 422A of the Code) shall have no effect as respects such options.

         (e)  DISCRETIONARY.  If the Employee shall terminate his employment 
under Section 11(b) hereof for no reason or otherwise in the sole discretion 
of the Employee, the Corporation shall pay the Employee his full Base Salary 
and Defined Incentive Compensation payable through the Date of Termination at 
the rate or rates in effect at the time Notice of Termination is given, and 
the Corporation shall have no further obligations to Employee hereunder.

         (f)  MAINTENANCE OF BENEFITS.  Unless the Employee is terminated for 
Cause pursuant to Section 10(c) hereof, or the employee terminates his 
employment hereunder for no reason or otherwise pursuant to Section 11(b), or 
the Employment Term expires without renewal upon the expiration of the 
Initial Term or Renewal Term then in effect, (including without limitation 
any expiration of the Initial Term upon exercise by the Corporation of the 
Early Expiration Option), then the Corporation shall, upon termination of the 
Employee's employment, maintain in full force and effect, for the continued 
benefit of the Employee, until the 

                                      18




later of (i) the date on which the Employment Term would have otherwise 
terminated if not renewed upon the expiration of the Initial Term or Renewal 
Term then just terminated, and (ii) twenty-four (24) months after the Date of 
Termination, all employee benefit plans and programs (inclusive of health, 
life, disability and other insurance plans or programs) in which the Employee 
was entitled to participate immediately prior to the Date of Termination, 
provided that the Employee's continued participation is possible under the 
general terms and provisions of such plans and programs. In the event that 
the Employee's participation in any such plan or program is barred or not 
otherwise possible or available, the Corporation shall arrange to provide the 
Employee, at the expense of the Corporation, with benefits substantially 
similar to those which the Employee would otherwise have been entitled to 
receive under such plans and programs from which his continued participation 
is barred or unavailable.

         (g)  NO MITIGATION.  The Employee shall not be required to mitigate 
the amount of any payment provided for in this Section 12 by seeking other 
employment or otherwise.

         (h)  EARLY EXPIRATION OPTION.  In the event that the Corporation 
shall exercise the Early Expiration Option contemplated by Section 3 hereof 
on the basis that the Expansion Plan Hurdle had not been met in a timely 
manner, the Corporation shall pay the Employee his full base salary and 
Defined Incentive Compensation through March 31, 1997 at the rate or rates 
then otherwise in effect and the Corporation shall have no further or 
additional obligations to the Employee hereunder; and in the event that the 
Corporation shall exercise the Early Expiration Option contemplated by 
Section 3 hereof on the basis of a, or probability of a, significant and 
sustained downturn in the financial performance or condition of the 
Corporation, the Corporation shall continue, notwithstanding expiration of 
the Initial Term and the Employee's term of employment hereunder on March 31, 
1997, to pay to the Employee, as a severance benefit, an amount equal to the 
Employee's base salary  and Defined Incentive Compensation at the rate or 
rates then in effect, over the period commencing April 1, 1997 and ending 
July 30, 1997, as though the Employee had remained employed during that 
period, and the Corporation shall have no further obligations to the Employee 
hereunder.

    13.  VACATION.  The Employee shall be entitled to vacation with pay as 
provided for in the employment manual established from time to time for the 
Corporation's employees, but in any event the Employee will be entitled 
annually to no less than four (4) weeks of paid vacation.

    14.  NON-DISCLOSURE AGREEMENT.  It is acknowledged that during his 
employment with the Corporation, the Employee will have disclosed to him or 
be furnished with access to proprietary information and to other trade 
secrets and confidential information of the Corporation (inclusive of 
information relating

                                      19




to the Corporation's proprietary process for the refinement of hyaluronic 
acid) (hereinafter collectively, the "Confidential Information"). Employee 
agrees that during his employment with the Corporation and at all times 
thereafter, he will not disclose any of the Confidential Information to any 
party other than authorized employee of the Corporation without the prior 
written consent of the Corporation. In addition, during his employment with 
the Corporation, Employee shall not be entitled to make use of the 
Confidential Information in any manner other than in connection with this 
employment with the Corporation and for the benefit of the Corporation, and 
upon the termination of his employment with the Corporation, Employee shall 
make no use whatsoever of the Confidential Information.  Upon the termination 
of his employment with the Corporation for any reason, Employee agrees to 
return to the Corporation copies of all written materials containing any of 
the Confidential Information. The provisions of this Section 14 shall not 
apply to Confidential Information which comes into the public domain 
otherwise than in breach of the Corporation's rights therein or to 
disclosures which are required to be made by Employee in response to legal 
process issued by a court or governmental agency of competent jurisdiction.

    15.  NON-COMPETITION AGREEMENT.  Employee agrees that for a period of two 
(2) years following the termination of his employment hereunder for any 
reason (other than termination for Good Cause or otherwise by or for breach 
of this Agreement by the Corporation), Employee shall not (i) directly or 
indirectly, for himself or on behalf of any other person, firm, corporation 
or association, call upon or otherwise contact or solicit any customer or 
client of the Corporation anywhere in the World for the purpose of obtaining 
the business of that customer identical or similar to the business of the 
Corporation in respect of that customer at any time during the employment by 
the Corporation of the Employee, where "customer" or "client" shall mean any 
person, corporation or other entity to which the Corporation has rendered or 
sold products or services at any time during which the Employee was employed 
by the Corporation, or (ii) take any action, affirmative or otherwise, that 
would materially impair the goodwill of the Corporation or materially disrupt 
the business of the Corporation (other than termination of the Employee's 
employment hereunder or as herein provided); provided, however, that the 
terms of this Section 15 shall not become effective unless and until the 
Employee shall have remained employed by the Corporation hereunder as of the 
first day of the first Renewal Term.

    16.  OWNERSHIP OF INVENTIONS.  It is agreed that the Corporation shall 
have exclusive ownership of and right to copyright, patent, register or 
otherwise protect all inventions, copyrightable materials, trademarks, 
service marks and trade names used by the Corporation in connection with its 
business, notwithstanding the fact that the Employee may develop or 
participate in the development of any of these rights and properties during 
the course of his employment with the Corporation.

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    17.  REMEDY OF SPECIFIC PERFORMANCE.  The parties agree that the business 
engaged in by the Corporation and the Confidential Information are special, 
unique and of extraordinary character and that, in the event of the breach by 
Employee of the terms of Sections 14, 15 or 16 of this Agreement, money 
damages would not adequately compensate the Corporation; therefore, Employee 
agrees that the Corporation shall be entitled, if it so elects, to institute 
and prosecute proceedings in any court of competent jurisdiction to enforce 
the specific performance of the aforementioned sections of this Agreement and 
to enjoin Employee from taking any action in violation of such sections of 
this Agreement, and Employee agrees not to raise any defense to any action to 
seek such equitable remedy. The remedies hereby provided shall not be 
exclusive but shall be in addition to any other remedy legally available to 
the Corporation.

    18.  SEVERABILITY.  Each Section and each provision of each Section of 
this Agreement shall be separable from the other provisions and Sections of 
this Agreement, and if for any reason, any provision or Sections hereof is 
determined to be invalid or contrary to existing or future laws, it is 
intended that such provision or Section be limited to the extent necessary so 
that it will not render this Agreement invalid and any such invalidity will 
only impair the operation or effect of those provisions or Sections which are 
invalid.

    19.  AGREEMENT INCLUSIVE.  This Agreement supersedes any and all prior 
employment agreements, whether written or oral, by and between the Employee 
and the Corporation and any and all such prior Agreements are hereby canceled 
and rendered null and void effective as of the date of this Agreement.

    20.  SUCCESSORS.  The Corporation will require any successor (whether 
direct or indirect, by purchase, merger, consolidation or otherwise) to all 
or substantially all of the business and/or assets of the Corporation, by 
agreement in form and substance satisfactory to the Employee, to expressly 
assume and agree to perform this Agreement in the same manner and to the same 
extent that the Corporation would be required to perform it if no such 
succession had taken place. Failure of the Corporation to obtain such 
agreement prior to the effectiveness of any such succession shall be a breach 
of this Agreement and shall entitle the Employee to compensation from the 
Corporation in the same amount and on the same terms as he would be entitled 
to hereunder if he terminated his employment for Good Reason, except that for 
purposes of implementing the foregoing, the date on which any such succession 
becomes effective shall be deemed the Date of Termination. As used in this 
Agreement, "Corporation" shall mean the Corporation as hereinbefore defined 
and any successor to its business and/or assets as aforesaid which executes 
and delivers the agreement provided for in this Section 20, or which 
otherwise becomes bound by all the terms and provisions of this Agreement by 
operation of law.

    21.  BINDING AGREEMENT. This Agreement and all rights of the Employee 
hereunder shall inure to the benefit of and be 

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enforceable by the Employee's personal or legal representatives, executors, 
administrators, successors, heirs, distributees, devisees and legatees. If 
the Employee should die while any amounts would still be payable to him 
hereunder if he had continued to live, all such amounts, unless otherwise 
provided herein, shall be paid in accordance with the terms of this Agreement 
to the Employee's devisee, legatee, or other designee or, if there be no such 
designee, to the Employee's estate.

    22.  GOVERNING LAW.  This Agreement shall be governed by and construed in 
all respects in accordance with the laws of the State of Maryland.

    23.  ENTIRE AGREEMENT.  This Agreement contains the entire agreement of 
the parties, and may be amended, waived, changed, modified, extended and/or 
rescinded only by a writing signed by the party against whom any such 
amendment, waiver, change, modification, extension and/or rescission is 
sought.

    24.  NOTICES.  All notices and communications hereunder shall be in 
writing and shall be deemed given when sent postage prepaid by registered or 
certified mail, return receipt requested, and, if intended for the 
Corporation, shall be addressed to it, to the attention of its Board of 
Directors, 11412 Cronridge Drive, Owings Mills, Maryland 21117, or at such 
other address of which the Corporation shall have given notice to the 
Employee in the manner herein provided, and if intended for the Employee, 
shall be addressed to him at the address which is on file for him from time 
to time among the general records of the Corporation, or at such other 
address of which the Employee shall have given notice to the Corporation in 
the manner herein provided.

    IN WITNESS WHEREOF, the parties hereto have set their hands as of the 
date first above written.

ATTEST:                      CHESAPEAKE BIOLOGICAL LABORATORIES, INC.


_________________________    By:____________________________________(SEAL)
                                  William P. Tew, Ph.D.
                                  Chief Executive Officer

WITNESS:                     EMPLOYEE:


_________________________    _______________________________________(SEAL)
                                  John C. Weiss, III







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