FOR IMMEDIATE RELEASE
Jim O'Shea                                  Noonan/Russo Communications, Inc.
Chairman, President, & CEO                  212-696-4455
Sam Nickerson                               Kristen Hammer (media) 249
Investor Relations                          Belinda Brouder-Hayes (investor) 224
Bioject Medical Technologies Inc.           Email:  news@noonanrusso.com
503-639-7221

               BIOJECT REPORTS SALE OF ITS GLUCOTRAXTM TECHNOLOGY
                -Company will focus on core needle-free business-

PORTLAND, OR - July 2, 1999 - Bioject Medical Technologies Inc. (Nasdaq:  BJCT),
the leading  manufacturer  of jet  injection  technology  for  needle-free  drug
delivery today  announced that Marathon  Medical  Technologies  Inc.,  Bioject's
joint  venture  with Elan  Corporation,  plc (NYSE:  ELN),  has entered  into an
agreement to sell the  venture's  license and other rights to the  GlucoTrax(TM)
blood glucose monitoring technology to Medisys, plc. (AIM: MDY.L).  Medisys is a
U.K.-based medical device company which has developed and commercialized devices
to monitor blood glucose levels.

In accordance with the terms of the agreement,  Bioject and Elan will receive $4
million for the sale of the license and related intellectual property rights and
certain fixed assets of the joint venture. Bioject had an 80.1 percent ownership
stake in the joint  venture  and  estimates  the receipt of  approximately  $2.5
million in net cash proceeds.  In addition,  Marathon will receive  royalties on
future revenues, if any, generated by the GlucoTrax technology.

"Choosing to sell the blood glucose  monitoring  technology was difficult," said
Jim O'Shea, Bioject's chairman, president and CEO. "While we would have liked to
continue to develop  GlucoTrax,  pursuing  simultaneous  development of both the
blood glucose  monitor and our  next-generation  needle-free  injection  systems
placed an  excessive  burden on our capital  resources.  Selling the  technology
significantly  reduces the  company's  current cash  requirements  and generates
additional cash reserves to support the core needle-free side of our business."

Commenting on Bioject's  near-term  strategy,  Mr.  O'Shea added,  " We are very
excited about the opportunities  available to Bioject. There is growing interest
in Bioject's  needle-free  injection  technology as a potentially  enabling drug
delivery  method,  as  evidenced by the use of the  Biojector(R)  2000 in recent
human  clinical  studies at Stanford  University  and at the U.S.  Naval Medical
Research  Center.  We will continue to develop the needle-free  business through
the establishment of corporate  alliances to capitalize on market  opportunities
and enhance our commercial presence." -more- Bioject Medical Technologies,  Inc.
located in Portland,  Oregon is an innovative developer and manufacturer of drug
delivery systems. The company's advanced injection system, the Biojector





 2000, is a high-speed  delivery system designed to inject medication  without a
needle.  The Biojector employs compressed carbon dioxide (CO2) as a power source
to  eject  medication  through  a  tiny  orifice  in a  fraction  of  a  second,
effectively penetrating the skin. Using this technology to administer injections
virtually eliminates the risk of contaminated needlestick injuries and resulting
blood-borne  pathogen  transmission,  a major concern  throughout the healthcare
industry.  The  Biojector  2000 has  received  the Seal of  Acceptance  from the
Alliance of Children's Hospitals, Inc.

This press release contains forward looking statements within the meaning of the
Private  Securities   Litigation  Reform  Act  of  1995,   including  statements
concerning the company's products as a potentially enabling drug delivery method
and  continued  growth of the company's  needle-free  business  segment  through
future  corporate  alliances.  Forward looking  statements such as these involve
known and unknown risks, uncertainties and other factors, any of which may cause
the actual  results,  performance or  achievements  of the company,  or industry
results,  to be materially  different from any future results,  performance,  or
achievements  expressed  or implied by the  forward  looking  statements.  These
risks,  uncertainties and other factors include,  without  limitation,  the risk
that research and development  efforts of the company or others will not produce
desired results,  dependence on the continued performance of strategic corporate
partners,  the company's need for additional financing and uncertainties related
to i.) the time required to complete  research and  development,  ii.) obtaining
necessary clinical data and regulatory clearances, iii.) successfully attracting
additional   strategic   corporate  partners  and  iv)  successfully   executing
revenue-generating  agreements with those additional strategic partners. Readers
of this press release are referred to the company's  filings with the Securities
and Exchange Commission,  including the company's Annual Report on Form 10-K for
the year ended  March 31, 1999 for further  discussions  of factors  which could
affect future results.

Forward-looking statements are based on the estimates and opinions of management
on the date the statements are made. The Company assumes no obligation to update
forward-looking  statements if conditions or management's  estimates or opinions
should change.

Editor's    Note:    This    press    release    can    also   be    found    on
http://www.noonanrusso.com and www.bioject.com.

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