EXHIBIT 10.44

                             CONSULTANT AGREEMENT


     This Consultant Agreement made and entered as of December 4, 1995, by 
and between MOLECULAR BIOSYSTEMS, INC., a Delaware corporation ("the 
COMPANY") and RICHARD M. STERN, an individual ("CONSULTANT").

     WHEREAS, COMPANY desires to retain CONSULTANT to perform certain 
services, and CONSULTANT is agreeable to doing so;

     NOW, THEREFORE, in consideration of the mutual promises set forth below, 
the parties agree as follows:

     1.  SERVICES.  The COMPANY hereby engages CONSULTANT as an independent 
contractor to do work for COMPANY relative to (1) product marketing, (2) 
marketing partnership relations, (3) business development, (4) industry 
conditions, and (5) such other projects and subjects as may be reasonably 
requested by the COMPANY.  CONSULTANT shall report to the COMPANY'S 
President.  It is anticipated that this engagement will not occupy the 
greater part of CONSULTANT's customary work week.

     2.  TERM.  The initial term  of this Consultant Agreement shall commence 
on December 4, 1995, and continue up to and including December 4, 1996.  The 
term of this Agreement may be extended beyond the initial term for periods 
not exceeding six (6) months upon the written agreement of both parties.  
CONSULTANT's services shall be rendered as requested by COMPANY.   This 
Consultant Agreement, or any extended term thereof, may be terminated by 
either party with or without cause with thirty (30) days' written notice, 
provided that COMPANY cannot terminate this Consultant Agreement without 
making severance payment to CONSULTANT in the full amount of the remaining 
payments upon termination unless CONSULTANT is in material breach of this 
Consultant Agreement or the Letter Agreement.                                 

     3.  COMPENSATION.

     (a)  The COMPANY shall pay CONSULTANT $114,000 for services rendered 
under this Agreement.  Payment shall be made every two weeks in accordance 
with the COMPANY's established business procedures.  Unless otherwise agreed 
between the parties, the COMPANY shall withhold customary payroll taxes.

     (b)  In the event that the COMPANY is purchased or experiences a 
substantial change in control and CONSULTANT is terminated as a result, the 
COMPANY shall make a severance payment to CONSULTANT in the full amount of 
the remaining payments upon termination.




      4.  EXPENSES.  Expenses incurred by  CONSULTANT in performance under 
this Consultant Agreement, including those for travel, if any, shall be paid 
by COMPANY, subject to COMPANY having approved the proposed expenses in 
accordance with current COMPANY policies.  Payment of expenses or 
reimbursement of CONSULTANT shall be made in accordance with COMPANY's 
established business procedures.  

      5.  INDEPENDENT CONTRACTOR.  CONSULTANT's relationship with COMPANY is 
and shall be that of an independent contractor and not of an employee of 
COMPANY and neither party is authorized to nor shall act as the agent of the 
other without the prior approval of both parties.

      6.  NOTICES.  Any notice permitted  or required under this Consultant 
Agreement shall be in writing and mailed or delivered to the receiving party 
at their respective last known addresses or any other changed address of 
which the sending party has been notified or of which it has actual 
knowledge.  

      7.  PROHIBITION AGAINST ASSIGNMENT.  This Consultant Agreement and the 
rights, interests and benefits hereunder shall not be assigned by the 
CONSULTANT.  However, you may provide for the assignment, gift, bequest, or 
transfer of such benefits under this Consultant Agreement to your 
survivor(s), or to a trust for their benefit, on your death, or in the event 
that you suffer a major disability.  

      8.  ENTIRE AGREEMENT.  This Consultant Agreement, along with the Letter 
Agreement between the parties captioned "Terms of Separation from MBI," 
constitutes the entire agreement between the parties hereto and contains all 
of the agreements between the parties hereto with respect to the subject 
matter hereof.  

      9.  BINDING EFFECT.  This Consultant Agreement shall be binding upon 
and inure to the benefit of the COMPANY and the CONSULTANT and their 
respective heirs, legal representatives, executors, administrators, and 
successors.

     10.  GOVERNING LAW.  This Consultant Agreement shall be subject to and 
governed by the laws of the State of California irrespective of the fact that 
the CONSULTANT is or may become a resident of a different state.

     11.  AMENDMENT OF CONSULTANT AGREEMENT.  No change  or modification of 
this Consultant Agreement shall be valid unless the same be in writing and 
signed by the CONSULTANT and the COMPANY.  No waiver of any provision of this 
Consultant Agreement shall be valid unless in writing and signed by the 
person or party to be charged.

     12.  SEVERABILITY.  If any portion or portions of this Consultant 
Agreement shall be, for any reason, deemed to be invalid or unenforceable, the



remaining portion or portions shall nevertheless be valid, enforceable and 
carried into effect.

     13.  HEADINGS.  The headings of this  Consultant Agreement are inserted 
for conve-nience only and are not to be considered in construction of the 
provisions hereof.

     14.  WAIVER OF BREACH.  The waiver by  either of the parties hereto of 
any breach of any provision hereof shall not be construed to be a waiver of 
any succeeding breach of that provision or a waiver of any other provision of 
this Consultant Agreement.

     IN WITNESS WHEREOF, the COMPANY has caused this Consultant Agreement to 
be signed by its duly authorized officer and the CONSULTANT has signed this 
Consultant Agreement on the day and year appearing in the preamble.


MOLECULAR BIOSYSTEMS, INC.



      /s/ Bobba Venkatadri
By: ---------------------------------------
      Bobba Venkatadri
      President and Chief Operating Officer

CONSULTANT:


      /s/ Richard M. Stern
- -------------------------------------------
      Richard M. Stern


Date:  December 2, 1995