MEDIMMUNE INC /DE
10-K, 1997-03-27
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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                    SECURITIES AND EXCHANGE COMMISSION
                        WASHINGTON, D. C.  20549
                                    
                                FORM 10-K
            ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                   THE SECURITIES EXCHANGE ACT OF 1934
                                    
For the year ended December 31, 1996  Commission File Number:  0-19131

                             MEDIMMUNE, INC.
         (Exact name of registrant as specified in its charter)

Delaware                                          52-1555759
State or other                                    (I.R.S. Employer
jurisdiction of                                   Identification No.)
incorporation or organization)

                   35 West Watkins Mill Road
                  Gaithersburg, Maryland 20878
            (Address of principal executive office)
                           (Zip Code)

Registrant's telephone number, including area code: (301) 417-0770
Securities Registered pursuant to Section 12(b) of the Act:  None
  Securities Registered pursuant to Section 12(g) of the Act:
                      Common Stock, $.01 par value
                            (Title of Class)

Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange
Act of 1934 during the preceding 12 months (or for such shorter period
that the registrant was required to file such reports), and (2) has been
subject to such filing requirements for the past 90 days.  Yes: X  No:

Indicate by check mark if disclosure of delinquent filers pursuant to
Item 405 of Regulation S-K is not contained herein, and will not be
contained, to the best of registrant's knowledge, in definitive proxy or
information statements incorporated by reference in Part III of this Form
10-K or any amendment to this Form 10-K [  ].

Aggregate market value of the 20,243,426 shares of voting stock held by
non-affiliates of the registrant based on the closing price on
February 28, 1997 was $293,529,677.  Common Stock outstanding as of
February 28, 1997:  21,898,698 shares.

              Documents Incorporated by Reference:
     Document                                     Part of Form 10-K
Proxy Statement for the Annual Meeting            Part III
of Stockholders to be held May 16, 1997
                                
                         MEDIMMUNE, INC.
                            FORM 10-K
                        TABLE OF CONTENTS

PART I                                                       PAGE
Item 1.   Business                                              1
Item 2.   Properties                                           30
Item 3.   Legal Proceedings                                    31
Item 4.   Submission of Matters to a Vote of Security Holders  31

PART II
Item 5.   Market for MedImmune, Inc.'s Common Stock and Related
          Shareholder Matters                                  31
Item 6.   Selected Financial Data                              32
Item 7.   Management's Discussion and Analysis of Financial
          Condition and Results of Operations                  32
Item 8.   Financial Statements and Supplementary Data          41
          Report of Independent Accountants                    67
          Report of Management                                 69
Item 9.   Changes in and Disagreements with Accountants on
          Accounting Financial Disclosure                      70

PART III
Item 10.  Directors and Executive Officers of MedImmune, Inc.  70
Item 11.  Executive Compensation                               71
Item 12.  Security Ownership of Certain Beneficial Owners and
          Management                                           71
Item 13.  Certain Relationships and Related Transactions       71

PART IV
ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULE, AND
          REPORTS ON FORM 8-K                                  72
          SIGNATURES                                           74

Schedule I                                                    S-1
Exhibit Index                                               E1-E5
Exhibits  (Attached to this Report on Form 10-K)

CytoGam is a registered trademark and RespiGam is a trademark  of
the Company.
                      ____________________
                                
THE STATEMENTS IN THIS ANNUAL REPORT THAT ARE NOT DESCRIPTIONS OF
HISTORICAL FACTS MAY BE FORWARD-LOOKING STATEMENTS.  SUCH
STATEMENTS REFLECT MANAGEMENT'S CURRENT VIEWS, ARE BASED ON
CERTAIN ASSUMPTIONS AND ARE SUBJECT TO RISKS AND UNCERTAINTIES,
INCLUDING BUT NOT LIMITED TO, FACTORS SUCH AS PRODUCT DEMAND AND
MARKET ACCEPTANCE RISKS, THE EARLY STAGE OF PRODUCT DEVELOPMENT,
COMMERCIALIZATION AND TECHNOLOGICAL DIFFICULTIES, CAPACITY AND
SUPPLY CONSTRAINTS AND OTHER RISKS DETAILED IN THE COMPANY'S
FILINGS WITH THE SECURITIES AND EXCHANGE COMMISSION.  ACTUAL
RESULTS COULD DIFFER MATERIALLY FROM THOSE CURRENTLY ANTICIPATED
AS A RESULT OF THE FOREGOING OR OTHER FACTORS.
                      ____________________
                                
                                
                             PART I
                        ITEM 1.  BUSINESS
                                
MedImmune ("the Company") is a biotechnology company focused on
developing and marketing products for infectious diseases and
transplantation medicine. Since commencing operations in 1988,
the Company has pursued a strategy of establishing an initial
commercial base using proven technologies and targeting
well-understood diseases to support longer-term product
development. This strategy has relied on the advancement of an
internally developed pipeline of product candidates and on
in-licensing products from third parties.

The Company is currently marketing two products, CytoGam
(Cytomegalovirus Immune Globulin Intravenous (Human), CMV-IGIV)
and RespiGam (Respiratory Syncytial Virus Immune Globulin
Intravenous (Human), RSV-IGIV).  The Company has established core
competencies in transplantation and infectious diseases and has a
research and development portfolio which includes six products
now

<PAGE>1

undergoing clinical trials, including two in Phase 3 studies and
a number of product candidates in preclinical development.

Products on the Market.
RespiGam
RespiGam is marketed for the prevention of serious respiratory
syncytial virus ("RSV") disease in children under 24 months of
age with a lung condition called bronchopulmonary dysplasia
("BPD") or a history of premature birth (i.e., born at 35 weeks
or less gestation). RespiGam is the only product demonstrated to
be safe and effective in reducing the incidence and duration of
RSV hospitalization and the severity of RSV illness in these high
risk infants.

RespiGam is a specialty immune globulin purified from donor
plasma screened to have high levels of neutralizing antibodies
against RSV. RSV is the leading cause of pneumonia and
bronchiolitis in children and results in an estimated 90,000
hospitalizations and 4,500 deaths annually in the United States.
RSV outbreaks occur worldwide, usually during the late fall,
winter and early spring. Certain populations of infants, children
and adults are at increased risk for developing severe RSV
disease. These include severely premature infants (i.e., less
than or equal to 32 weeks gestation) and infants with BPD. There
are approximately 100,000 children in this high-risk group in the
United States.

The Company directly markets RespiGam in the leading 420 neonatal
and pediatric hospitals in the United States. These hospitals
comprise approximately 70% of the total potential business for
RespiGam.  The Company's direct marketing efforts are
supplemented

<PAGE>2

by the Wyeth-Lederle Vaccines and Pediatrics sales force of Wyeth-
Ayerst Laboratories (a division of American Home Products
Corporation ("AHP")), one of the leading pharmaceutical companies
focused on pediatric medicine. AHP has focused on promoting
RespiGam to physicians in smaller hospitals and to office-based
pediatricians.  The Company submitted an application to Canadian
regulatory authorities during 1996 to request approval to market
RespiGam.  There can be no assurance that such a license will be
granted, or, if granted, that licensure will occur in a timely
manner.

The Company has established a collaboration with Baxter
Healthcare Corporation ("Baxter"), one of the leading producers
and marketers of immune globulins worldwide, to commercialize
RespiGam outside North America.  The Company has been advised
that Baxter expects to file regulatory applications in Europe
during 1997 seeking a license to market RespiGam throughout
Europe (see "Collaborative Agreements").  There can be no
assurances that such a license or licenses will be granted, or,
if granted, that licensure will occur in a timely manner.

After receiving approval from the United States Food & Drug
Administration ("FDA") for the marketing of RespiGam in January
1996, the Company launched RespiGam for its first full RSV season
during fourth quarter 1996.  Sales of RespiGam in the fourth
quarter were $13.9 million.  The Company was supply-constrained
in the fourth quarter and expects to be limited in its supply of
RespiGam in the first quarter 1997.  The Company has worked
closely with its contract manufacturers to increase product
supply for the 1997-1998 RSV season.  While the Company believes
it will

<PAGE>3

be successful in achieving this goal, there can be no assurances
that demand will not exceed supply during subsequent RSV seasons.

CytoGam
CytoGam is marketed for the attenuation of primary
cytomegalovirus ("CMV") disease associated with kidney
transplantation.  Approximately 75% of untreated donor-
positive/recipient-negative kidney transplant recipients are
expected to develop CMV disease. Infection of a transplant
recipient with CMV by a donor organ is associated with increased
mortality and substantial morbidity including pneumonia,
hepatitis, opportunistic infections and possibly graft rejection.
CytoGam is a specialty immune globulin product enriched in
antibodies against CMV.  CytoGam has been shown to reduce the
incidence of severe CMV disease and opportunistic infections
associated with kidney transplantation.  The Company began
marketing CytoGam through its own hospital-based sales force in
1993. Sales of CytoGam have grown at a compounded annual rate of
approximately 30% since 1993 to $18.4 million in 1996.  While
sales growth has been strong, the Company expects to continue to
face increasing pressure from cost containment efforts as well as
competition from other effective anti-viral therapies.

Products in Development
MEDI-493 RSV Monoclonal Antibody
MEDI-493 is a humanized monoclonal antibody being evaluated in
clinical studies for the prevention of RSV disease in high-risk
infants (see "RespiGam" above). MEDI-493 is administered by
intramuscular injection and consequently has the potential to
enhance patient care, reduce costs associated with drug
administration and improve convenience for parents, physicians
and

<PAGE>4

nurses.  Taken together, the Company believes these benefits may
provide the potential to reach a broader population of children
with MEDI-493 than with RespiGam.

The Company has tested MEDI-493 in Phase 1 and Phase 2 clinical
trials involving approximately 300 patients for both prevention
and treatment of RSV disease.  During the 1996-1997 RSV season,
the Company is evaluating MEDI-493 in a Phase 3 clinical trial,
IMpact-RSV, being conducted at 139 medical centers in 1,502 high-
risk infants and children in the United States, Canada and the
United Kingdom.  The Company expects to complete the trial in May
1997 and announce results during the third quarter.  While the
Company believes it has established a rapid and comprehensive
development program for MEDI-493, substantial risk remains,
including: 1) no assurances can be given that the clinical trial
will show with statistical significance that MEDI-493 is safe and
effective in preventing RSV-associated hospitalization; 2)no
assurances can be given that an observed effect, if any, will be
great enough to warrant commercialization; 3)no assurances can be
given that the FDA will license the drug for marketing; and 4)no
assurances can be given that if FDA licensure occurs, it would
occur in a timely manner.  To date, the Company has retained
exclusive worldwide marketing and manufacturing rights for MEDI-
493.

Human Papillomavirus Vaccine
Human papillomaviruses ("HPVs") are responsible for the
development of genital warts and cervical cancer.  There are
currently no vaccines to prevent these common sexually
transmitted diseases that affect 24 to 40 million men and women

<PAGE>5

in the United States.  There are over 75 different types of HPV
associated with a variety of clinical disorders ranging from
benign lesions to potentially lethal cancers.  Four types of HPV
cause the majority of genital warts and cervical cancer cases:
HPV-6, HPV-11, HPV-16 and HPV-18.

The Company's first HPV vaccine candidate, MEDI-501, is composed
of the HPV-11 L1 capsid protein which self assembles into virus-
like particles (VLPs).  The VLPs, which are produced in vitro
using recombinant DNA technology, imitate the structure of
natural papillomavirus, but are not infectious.  When presented
to the immune system, VLPs may be able to elicit a similar immune
response to that seen with naturally occurring HPV.  Scientists
at the Company, in collaboration with a team at Georgetown
University, have shown the potential effectiveness of a VLP
vaccine candidate using a dog model for papillomavirus infection.
The model involves a virus called canine oral papillomavirus
(COPV) which mimics HPV infection closely because it produces
both warts and tumors at a mucosal site.  In December 1995, The
Company and its collaborators published in "The Proceedings of
the National Academy of Sciences" the results of studies which
indicated that a COPV VLP vaccine preparation was able to protect
dogs against COPV warts.  That study provided the scientific
rationale for developing an analogous vaccine for humans.

The Company began a Phase 1 clinical trial with MEDI-501 in
February 1997 to evaluate its safety, tolerance, and
immunogenicity.  The trial, which is being conducted at the
University of Rochester Medical Center, is expected to conclude
in approximately 12 months.  The Company expects to begin testing

<PAGE>6

of vaccine candidates for other types of HPVs in the next 12 to
18 months including HPV-18, HPV-16 and HPV-6. The Company
believes a multi-component vaccine consisting of two or more HPV
types would be necessary to prevent HPV disease of the genital
tract.

Monoclonal Antibodies for Transplantation Medicine
The Company is developing several monoclonal antibodies for use
in transplantation medicine. There are approximately 19,000 solid
organ transplants and 11,000 bone marrow transplantation
procedures annually in the United States.  Despite significant
improvements in the transplantation arena, life-threatening
complications such as graft-vs.-host disease ("GvHD") and organ
rejection remain serious medical problems.

BTI-322 is a rat anti-CD2 monoclonal antibody being developed by
the Company in collaboration with BioTransplant, Incorporated for
various applications in transplantation medicine.  In studies
conducted to date, involving over 60 patients in the United
States and Europe, BTI-322 has shown initial promise in its
ability to prevent and treat organ graft rejection and to treat
GvHD.  BTI-322 is currently being evaluated in a multi-center
Phase 2 clinical trial for the treatment of acute GvHD.  Safety,
efficacy and pharmacokinetic parameters are being monitored
during the study which is expected to be completed within one
year.

Laboratory studies have suggested that BTI-322 primarily inhibits
the response of T cells directed at transplant antigens while
subsequently allowing immune cells to respond normally to other

<PAGE>7

antigens.  The specificity and long lasting effects of this
inhibition suggest that BTI-322 could have potential utility in
applications other than transplantation, such as in autoimmune
diseases.  The Company is currently developing MEDI-507, a
humanized form of the product, which is expected to enter
clinical trials in 1997 for selected applications in
transplantation and autoimmune diseases.  Autoimmune diseases are
of major medical importance worldwide and include common
afflictions like rheumatoid arthritis, multiple sclerosis and
Crohn's disease.

In 1994, the Company in-licensed from the University of Kentucky
a murine monoclonal antibody known as T10B9 (now MEDI-500).  MEDI-
500 suppresses most T cells by binding to a protein (the alpha-
beta receptor) on the surface of the T cell.  MEDI-500 has been
evaluated in several transplantation clinical trials involving
approximately 400 individuals.  A Phase 2 clinical trial
comparing MEDI-500 with the only commercially available
monoclonal antibody for treatment of acute rejection suggested
that MEDI-500 may have a similar efficacy profile but with
reduced side effects.  A Phase 3 clinical trial, sponsored by the
National Heart, Lung, and Blood Institute ("NHLBI"), is currently
evaluating MEDI-500 for prevention of graft-versus-host disease
(GvHD).

Lyme Disease Vaccine
Lyme disease is the most common arthropod-borne disease in the
United States.  Virtually every state within the U.S. has
reported cases of Lyme disease, with an annual nationwide
reported incidence of nearly 14,000 new cases in 1996, a 30-40%

<PAGE>8

increase over 1995. Lyme disease is also reported in Europe,
Japan, China, Russia and Australia.  The disease is caused by a
bacterium know as Borrelia burgdorferi ("B. burgdorferi") and is
transmitted through a tick, Ixodes scapularis, which is most
commonly found on the white-footed mouse or deer.

The Company in-licensed a newly characterized B. burgdorferi
protein called decorin binding protein ("Dbp") from Texas A&M
University, which initial animal studies suggest may provide
protection against B. burgdorferi infection.  Unlike antibodies
to vaccines in development by other companies, Dbp antibodies can
be given to mice during the early phase of infection and still
clear the bacterium from animals.  This may allow a significantly
greater window of opportunity for a protective immune response to
clear infection.  The Company believes Dbp is the only protein
identified from B. burgdorferi to date for which this effect has
been demonstrated. In addition, antibodies from animals immunized
with Dbp inhibited growth of many strains of the Lyme disease-
causing bacteria not inhibited by antibodies to another vaccine
candidate in development, including some species of Lyme bacteria
commonly found outside the United States.  These results suggest
that Dbp may provide an improved Lyme disease vaccine candidate
or, alternatively, a supplement to the vaccine candidates
currently in development.

Urinary Tract Infection Vaccine
Urinary tract infections ("UTIs") commonly require medical
attention in women and children.  Escherichia coli ("E. coli")
strains are the main causative agents of UTIs. While many factors
contribute to the acquisition and progression of UTIs, it is

<PAGE>9

widely accepted that colonization of the urogenital tract by
pathogenic bacteria is a prerequisite for disease. A number of
studies have pointed to a role for pilus proteins, the long
filamentous protein appendages on the surface of E. coli, in
mediating attachment to host cells.  Certain proteins located at
the distal tip of the pilus, called "adhesins," have been
implicated in this attachment, providing an important novel
target for vaccine development.

The Company and its collaborators at Washington University in St.
Louis are developing antibacterial candidates based on the tip
adhesins on the E. coli pili.  The FimH adhesin which is at the
tip of UTI-associated pili, binds to mannose receptors
distributed throughout the human bladder.  In preliminary
experiments at the Company, the FimH adhesin protein elicited a
strong antibody response in mice.  These antibodies inhibited
attachment to human bladder cells in vitro in greater than 90% of
different E. coli clinical UTI isolates tested.  Furthermore,
anti-FimH antibodies reduced bladder colonization by UTI-
associated E. coli in a mouse model.  Taken together these data
suggested that the FimH adhesin could potentially serve as a
target for an anti-bacterial vaccine to combat UTIs.

The Company is currently conducting in vivo animal model studies
and designing large scale production and purification protocols
for its first UTI vaccine candidate.  Adhesin-based vaccines may
also be an effective strategy for other diseases caused by
bacteria.

Streptococcus pneumoniae Vaccine

<PAGE>10

Streptococcus pneumoniae is a major cause of pneumonia, middle-
ear infections and meningitis worldwide, especially in the very
young or elderly.  Pneumonia causes more than one million deaths
per year and is the most common cause of childhood death in
developing countries.  In  industrialized countries, pneumococcal
pneumonia is a serious problem among the elderly.  Middle-ear
infections affect almost every child at least once during the
first 2 years of life.  Vaccination against pneumococcal
infections has become more urgent in recent years due to the
emergence of antibiotic-resistant strains throughout the world.

The Company has recently established a collaboration with The
Rockefeller University ("Rockefeller") in New York to develop
products for the prevention and treatment of Streptococcus
pneumoniae infection.  The Company has been granted a worldwide
exclusive license to commercialize product candidates developed
from a novel set of genes discovered by scientists at
Rockefeller.  In addition, research efforts are underway by
scientists at the Company and Rockefeller to identify novel
conserved surface proteins for potential vaccine applications.
During 1997, promising candidate proteins are expected to be
evaluated in a number of in vitro and in vivo models to determine
their potential as vaccine candidates.

Other Infectious Disease Products
The Company has several additional efforts in place to develop
vaccines for common viral and bacterial infectious diseases
including B19 parvovirus, Haemophilus influenzae and
Staphylococcus aureus.

<PAGE>11

Discovered in 1975, B19 parvovirus has been linked to a number of
serious conditions including certain types of miscarriages in
pregnant women, life-threatening sudden reduction of red blood
cells in sickle cell anemia patients, chronic anemia in AIDS and
chemotherapy patients, and persistent arthritis in some adults.
MEDI-491 is a vaccine intended to prevent human B19 parvovirus
infection.  Like MEDI-501, MEDI-491 utilizes virus-like particle
("VLP") technology. By producing two natural B19 parvovirus
proteins in the correct proportions in an insect cell recombinant
protein production system, the Company and collaborators at the
National Heart, Lung, and Blood Institute ("NHLBI") are able to
generate VLPs which resemble the natural B19 parvovirus
particles, but are not infectious.  The Company has completed a
Phase 1 clinical trial to evaluate the safety of MEDI-491. The
Company believes that a successful B19 parvovirus vaccine could
be used to immunize women entering their child-bearing years to
protect them from experiencing risk of B19 parvovirus-induced
miscarriages.  Alternately, a successful B19 parvovirus vaccine
could be incorporated into routine childhood immunization
programs to reduce the prevalence of this virus.

Haemophilus influenza ("H. influenzae") causes otitis media or
middle ear infections in young children.  There are more than
700,000 cases in the United States each year and many infections
recur.  As part of MedImmune's ongoing collaboration with Human
Genome Sciences, Inc. ("HGS"), the genome of H. influenzae has
been sequenced and approximately 90 novel surface proteins have
been identified as potential vaccine candidates.  These candidate
proteins are currently being evaluated by MedImmune scientists.

<PAGE>12

Staphylococcus aureus ("S. aureus") is a bacterium which infects
over nine million individuals each year in the United States, and
is the most frequent cause of infections in the hospital.  A
significant percentage of all hospital-acquired S. aureus
infections are now resistant to most antibiotics. To date, 99% of
the genome has been sequenced and over 3,000 genes have been
identified as part of MedImmune's ongoing collaboration with HGS.
Novel candidates are being selected for evaluation.

Products and Product Development Programs
The following table summarizes the indications and current status of
the Company's products and product development programs.

<TABLE>                                                          
<S>               <C>                                    <C>
     Product                    Indication                   Status(1)
- --------------------------------------------------------------------------
Infectious Disease Products                              

RespiGam(2)       Prevention of serious RSV disease in   Marketed
                  infants with prematurity or lung       
                  disease                                
                  
MEDI-493 RSV      Prevention of RSV disease in infants   Phase 3
Monoclonal        Treatment of RSV disease               Phase 2
Antibody                                                 

MEDI-491 B19      Prevention of B19 parvovirus           Phase 1
Parvovirus        infection                              
Vaccine           
HPV Vaccine       Prevention of genital warts            Phase 1
                  Prevention of cervical cancer          Pre-clinical
                                                         development
                                                         
Second Generation Prevention of Lyme disease             Pre-clinical
Lyme Disease                                             development
Vaccine

<PAGE>13

E. coli Vaccine   Prevention of urinary tract            Pre-clinical
                  infections                             development
                                                         
H. influenzae     Prevention of otitis media (middle     Research
Vaccine            ear infections)                       

S. aureus         Prevention of staphylococcus           Research
Vaccine/          infections                             

Immunotherapeutic 

S. pneumoniae     Prevention and treatment of            Research
Vaccine           streptococcus pneumoniae infection
                  
RSV Vaccine(3)    Prevention of RSV disease              Phase 2 (AHP
                                                         sponsored)
                                                         
Transplantation Products                                 

CytoGam           Attenuation of primary CMV disease in  Marketed
                  kidney transplant patients             
                  
                  Prevention of CMV disease in all       Product license
                  solid organ transplant patients        application
                                                         amendment
                                                         submitted
MEDI-500 (T10B9)  Prevention of GvHD in bone marrow      Phase 3 (NHLBI
Monoclonal        transplant patients                    sponsored)
Antibody                                                 
                  Treatment of acute kidney rejection    Phase 2
                  
BTI-322           Treatment of GvHD in bone marrow       Phase 2
Monoclonal        transplant patients
Antibody
                  Prevention of kidney rejection         Phase 1
                  Treatment of acute kidney rejection    Phase 1
                  
MEDI-507          Prevention of kidney rejection         Pre-clinical
Monoclonal                                               development
Antibody
                  Treatment of autoimmune diseases       Pre-clinical
                                                         development
</TABLE>                                                 


(1)  "Phase  1" and "Phase  2" clinical trials generally involve
     administration of a product to a limited number of patients

 <PAGE>14

     to evaluate safety, dosage and, to some extent, efficacy.
     "Phase  3" clinical trials generally examine the efficacy
     and safety of a product in an expanded patient population at
     multiple clinical sites.

(2)  AHP co-promotes RespiGam in the United States. Baxter holds
     a license to commercialize RespiGam outside North America,
     and the Company would receive a royalty on any sales by
     Baxter.

(3)  This product is being developed by AHP. The Company is
     entitled to a royalty on any sales, if and when licensed for
     marketing by the FDA.

Marketing, Research, Development and Collaborative Agreements
The Company's internal research programs are augmented by
collaborative projects with its scientific partners.  As part of
its strategy, the Company has established alliances with
pharmaceutical and other biotechnology companies, academic
scientists and government laboratories. Currently, its principal
strategic alliances are the following:

American Home Products Corporation.
In November 1993, the Company entered into a strategic alliance
with American Cyanamid Company ("ACY") to co-develop and
co-promote products for the treatment and prevention of RSV and
to co-promote ZOSYN(1), an anti-infective developed by ACY. In 1994,
American Home Products Corporation ("AHP") acquired ACY and in
October 1995, AHP invested $15 million in the Company through the

(1) ZOSYN is a trademark of American Home Products Corporation.

<PAGE>15

purchase of 967,742 shares of Common Stock. The Company and AHP
collaborated on the development of RespiGam and AHP is
co-promoting the product. In connection with the October 1995
investment, the Company and AHP agreed to amend certain terms of
agreements entered into concurrently with the formation of their
1993 strategic alliance. Pursuant to these amendments, AHP's
funding obligations and co-promotion rights with respect to
MEDI-493 were terminated, and the Company returned its right to
co-promote ZOSYN. In addition, the Company's obligation to
co-fund and co-promote an RSV vaccine being developed by AHP was
converted into the right to receive royalties on any sales of
this vaccine, and AHP was granted the right to receive royalties
on any sales of MEDI-493.


Baxter Healthcare Corporation.
In June 1995, the Company entered into an exclusive,
royalty-bearing license agreement with Baxter Healthcare
Corporation ("Baxter") to commercialize RespiGam outside North
America. Within its territory, Baxter will be responsible for
funding clinical and regulatory activities and for manufacturing
and marketing RespiGam. Upon the achievement of certain sales
milestones, Baxter is obligated to reimburse the Company for
certain previously funded research and development activities.
Concurrent with the execution of the license agreement, Baxter
also purchased 826,536 shares of Common Stock for $9.5 million.

BioTransplant, Incorporated.
In October 1995, the Company and BioTransplant, Incorporated
("BTI") formed a strategic alliance for the development of

<PAGE>16

products to treat and prevent organ transplant rejection. The
alliance is based upon the development of products derived from
BTI's anti-CD2 antibody BTI-322, the Company's anti-T cell
receptor antibody MEDI-500 and future generations of products
derived from these two molecules (such as MEDI-507, or humanized
BTI-322). Pursuant to the alliance, the Company received an
exclusive worldwide license to develop and commercialize BTI-322
and any products based on BTI-322, with the exception of the use
of BTI-322 in kits for xenotransplantation or
allotransplantation. The Company has paid BTI $4 million in
license fees and research support to date.  The Company has
assumed responsibility for clinical testing and commercialization
of any resulting products. BTI will receive research support and
milestone payments which could total up to an additional $12
million, as well as royalties on any sales of BTI-322, MEDI-500,
MEDI-507 and future generations of these products, if any.

Human Genome Sciences, Inc.
In July 1995, the Company entered into a collaborative research
and development relationship with Human Genome Sciences, Inc.
("HGS") to create antibacterial vaccines and immunotherapeutic
products based upon the genomic sequences of bacteria. The
Company and HGS initiated collaborative research efforts with
programs to develop vaccines for non-typeable Haemophilus
influenzae and Staphylococcus aureus.  Rights to another genomic
sequence for vaccine development, Helicobacter pylori, were out-
licensed to Oravax, Inc. and Pasteur Merieux Connaught in
November 1996 for license payments as well as milestone and
royalty obligations. Additional research projects for the
development of vaccines and antibody-based products will be
determined as additional genomic

<PAGE>17

sequences are completed of other bacteria selected by the Company
and HGS. Pursuant to a collaboration and license agreement
between the Company and HGS, the Company will be solely
responsible for the commercialization of any products developed
through the collaboration, and HGS will be entitled to royalties
based upon the extent to which any products jointly developed are
covered by patents or license rights held by HGS.

Massachusetts Health Research Institute and Massachusetts Public
Health Biologics Laboratories.
In August 1989 and April 1990, the Company entered into a series
of research, supply and license agreements with Massachusetts
Health Research Institute ("MHRI") and Massachusetts Public
Health Biologics Laboratories ("MPHBL") covering products
intended for the prevention or treatment of CMV and RSV infection
and other respiratory virus infections by immune globulins or
monoclonal antibodies. The Company has agreed to pay royalties on
all sales using the licensed technology. Pursuant to the
agreements, the Company paid $11.8 million in 1996, $5.1 million
in 1995 and $4.9 million in 1994, for royalties, process
development and manufacturing.

Other Agreements.
The Company has a number of other collaborative and business
agreements with academic institutions and business corporations,
including agreements with 1) Washington University in St. Louis
covering development of pilus-based anti-bacterial vaccines, 2)
Georgetown University, the German Cancer Research Center and the
University of Rochester covering development of vaccines for
human papillomaviruses and 3) Rockefeller University for the
discovery

<PAGE>18

and commercialization of products to treat and prevent
Streptococcus pneumoniae. In addition, the Company has license
agreements with third parties on CytoGam, RespiGam, MEDI-493 and
substantially all of its other potential products. The Company is
obligated to pay royalties on any sales of these products.

Marketing and Sales
The Company is developing a sales and marketing organization
which it believes is responsive to the increased importance of
managed care, the need to lower costs and the necessity to
provide quality service to its customers.

The Company's first product, CytoGam, was originally marketed by
a third party as the Company's exclusive distributor. In
December 1992, the Company reacquired marketing rights to CytoGam
and in January 1993, the Company commenced marketing of CytoGam
in the United States through its own 14-person sales force
focused on 250 leading transplantation hospitals. Sales outside
the United States are made through regional distributors.

After the expansion of the sales and marketing teams in January
1996, the Company now has approximately 70 people in these
groups. The Company has five regional business directors, each
with 15 or more years of sales, marketing or managed care
experience, to manage the regional business units. Approximately
45 sales and managed care representatives cover approximately 500
hospitals and clinics in the United States which specialize in
transplantation and/or pediatric/neonatal care for the promotion
of CytoGam and RespiGam, respectively.  Each sales representative
is responsible for selling both CytoGam and RespiGam.

<PAGE>19

The Company's RespiGam sales effort is supplemented by the
approximately 300-person Wyeth-Lederle Vaccines and Pediatrics
sales force of the Wyeth-Ayerst Laboratories (a division of AHP).
While the Company focuses on the top 420 leading neonatal and
pediatric medical centers in the United States (accounting for
approximately 70% of potential RespiGam sales), AHP focuses on
smaller hospitals and pediatrician offices.  AHP is among the
leading pharmaceutical companies focused on pediatric medicine.

The Company has established a collaboration with Baxter, one of
the leading producers and marketers of immune globulins
worldwide, to commercialize RespiGam outside North America, if
and when licensed for marketing by foreign regulatory
authorities.  The Company has been advised that Baxter intends to
file European regulatory applications during 1997 to request a
license to market RespiGam in Europe.  There can be no assurance
that such a license will be granted, or, if granted, that
licensure will occur in a timely manner.

Manufacturing and Supply
The Company has entered into manufacturing, supply and purchase
agreements in order to provide a supply of human plasma and
production capability for CytoGam and RespiGam. CytoGam and
RespiGam are produced from human plasma collected from donors who
have been screened to have higher concentrations of antibodies
against CMV and RSV, respectively. Human plasma for CytoGam and
RespiGam is converted to an intermediate raw material (Fraction
II+III paste) under a supply agreement with Baxter.  The Company
has recently entered into an agreement with V.I. Technologies,

<PAGE>20

Inc. to supply additional Fraction II+III paste.

MPHBL processes the Fraction II+III paste into bulk product. The
Company has an informal arrangement with MPHBL for planned
production of bulk product for CytoGam and RespiGam. MPHBL holds
the sole product and establishment licenses for CytoGam and
RespiGam.  The Company also has an agreement with Connaught
Laboratories, Inc. ("Connaught") to fill and package CytoGam and
RespiGam.  If MPHBL, the suppliers of the Fraction II+III paste,
or Connaught is unable to satisfy the Company's product
requirements on a timely basis or is prevented for any reason
from manufacturing CytoGam or RespiGam, the Company may be unable
to secure an alternative supplier or manufacturer without undue
and materially adverse operational disruption and increased cost.
Currently, RespiGam finished product inventory is in short
supply, and no assurances can be given that an adequate supply
will be available to meet demand. Recently, the Company has
experienced product shortages which have limited product sales
without reducing sales and marketing costs.

In July 1996, the Company entered into an engineering,
procurement, construction and validation services agreement with
Fluor Daniel, Inc. ("Fluor") to design and construct a
manufacturing facility to be located on a 26 acre site in
Frederick, Maryland. The Company estimates the facility will cost
approximately $50 million to construct. The facility is planned
to be a multi-use biologics facility intended to provide
production capability for the manufacture of immune globulins
(CytoGam and RespiGam) and by-products from human plasma. In
addition, the facility is being designed to contain a cell
culture production

<PAGE>21

area for the manufacture of products, such as MEDI-493, MEDI-500
and BTI-322, if and when they are licensed for marketing by the
FDA. There can be no assurance that the facility will receive
regulatory approval for its intended purposes. Additionally,
construction and validation of manufacturing facilities can take
substantial time to complete. In order to produce RespiGam in the
manufacturing facility, the Company may need to obtain certain
rights from MPHBL.  No assurances can be given that such rights
can be obtained.  Additionally, no assurances can be given that
if the technology to manufacture CytoGam and/or RespiGam is
transferred to the Company from MPHBL, that the Company will
successfully be able to produce these products in the plant.

The Company produces materials for clinical trials in its pilot
plant facility in Gaithersburg, Maryland. Materials currently
being used in clinical trials for MEDI-490, MEDI-493, MEDI-491
and MEDI-500 have been produced at the Company's pilot plant.
Completion is expected in 1997 of an expansion of the Company's
pilot plant facility to support the production of materials for
Phase 3 clinical trials and market entry production requirements.
The Company estimates the cost of expanding this facility to be
approximately $6 million. There can be no assurance that when the
facility is completed, appropriate regulatory approvals will be
obtained to use the facility for market entry manufacturing.

Patents, Licenses and Proprietary Rights
Products currently being developed or considered for development
by the Company are in the area of biotechnology, an area in which
there are extensive patent filings. The patent position of
biotechnology firms generally is highly uncertain and involves

<PAGE>22>

complex legal and factual questions. To date, no consistent
policy has emerged regarding the breadth of claims allowed in
biotechnology patents. Accordingly, there can be no assurance
that patent applications owned or licensed by the Company will
result in patents being issued or that, if issued, such patents
will afford protection against competitors with similar
technology. In addition, there can be no assurance that products
covered by such patents, or any other products developed by the
Company or subject to licenses acquired by the Company, will not
be covered by third party patents, in which case continued
development and marketing of such products would require a
license under such patents. There can be no assurance that such
required licenses will be available to the Company or its
licensees on acceptable terms.

The Company is aware of several patents and patent applications
which may affect the Company's ability to make, use and sell the
Company's products or product candidates, including the
following: (i) three United States patents, directed to
intravenous immune globulin containing high concentrations of
either CMV or RSV antibodies, which have been issued to a major
pharmaceutical company having substantially greater financial
resources than the Company and (ii) United States patents,
directed to murine monoclonal antibodies against T cells and the
use thereof, which have been issued to another major
pharmaceutical company having substantially greater financial
resources than the Company.  Although the Company believes that
neither its CytoGam and RespiGam technologies, which use
intravenous immune globulins containing high concentrations of
CMV or RSV antibodies, respectively, nor its MEDI-500 and BTI-322
technologies, which use monoclonal antibodies against T cells,
infringe any valid claims

<PAGE>23

of such patents, the Company can provide no assurances that if a
legal action based on such patents were brought against the
Company, such an action would be resolved in the Company's favor.
If such a dispute were resolved against the Company, in addition
to potential damages, the manufacturing and sale of such products
could be enjoined unless a license were obtained. There can be no
assurances that, if a license were required, such a license would
be made available on terms acceptable to the Company.
Additionally, the Company is aware of several patents covering
the composition of and process for making murine and humanized
monoclonal antibodies for which the Company may need a license or
licenses.  If such a license or licenses were required, there can
be no assurance that companies holding such licenses would make
them available to the Company on terms acceptable to the Company.

While the Company has several licenses to issued patents and owns
or has licenses to pending patent applications with respect to
certain of its products, the Company believes that there are
other patents issued to third parties and/or patent applications
filed by third parties which could have applicability to each of
the Company's products and product candidates and which could
adversely affect the Company's freedom to make, use or sell such
products or use certain processes for their manufacture. The
Company is unable to predict whether it will ultimately be
necessary to seek a license from such third parties or, if such a
license were necessary, whether such a license would be available
on terms acceptable to the Company. The necessity for such a
license could have a material adverse effect on the Company's
business.

<PAGE> 24

There has been substantial litigation regarding patent and other
intellectual property rights in the biotechnology industry.
Litigation may be necessary to enforce certain intellectual
property rights of the Company. Any such litigation could result
in substantial cost to and diversion of effort by the Company.

Government Regulation
The production and marketing of the Company's products and
research and development activities are subject to regulation for
safety and efficacy by numerous governmental authorities in the
United States and other countries. In the United States,
vaccines, drugs and certain diagnostic products are subject to
FDA review and licensure. The federal Food, Drug and Cosmetics
Act, the Public Health Service Act and other federal statutes and
regulations govern or influence the testing, manufacture, safety,
labeling, storage, record keeping, licensure, advertising and
promotion of such products. No assurances can be given that any
products under development will be licensed for marketing by the
FDA or once approved, that the product will be successfully
commercialized or maintained in the marketplace. Non-compliance
with applicable requirements can result in fines, recall or
seizure of products, total or partial suspension of production,
refusal of the government to approve product license
applications, restrictions on the Company's ability to enter into
supply contracts and criminal prosecution. The FDA also has the
authority to revoke product licenses and establishment licenses
previously granted.

The FDA may designate a drug as an Orphan Drug for a particular
use, in which event the developer of the drug may be entitled to a

<PAGE>25

seven year marketing exclusivity period. CytoGam and RespiGam
have been designated as Orphan Drugs for certain indications by
the FDA. Accordingly, CytoGam and RespiGam have market
exclusivity for their currently licensed indications through
April 17, 1997 and January 17, 2003, respectively.

The Company is also subject to regulation by the Occupational
Safety and Health Administration ("OSHA") and the Environmental
Protection Agency ("EPA") and to regulation under the Toxic
Substances Control Act, the Resources Conservation and Recovery
Act and other regulatory statutes, and may in the future be
subject to other federal, state or local regulations. OSHA and/or
the EPA may promulgate regulations concerning biotechnology that
may affect the Company's research and development programs. The
Company is unable to predict whether any agency will adopt any
regulation which would have a material adverse effect on the
Company's operations. The Company voluntarily attempts to comply
with guidelines of the National Institutes of Health regarding
research involving recombinant DNA molecules. Such guidelines,
among other things, restrict or prohibit certain recombinant DNA
experiments and establish levels of biological and physical
containment that must be met for various types of research.

Sales of pharmaceutical and biopharmaceutical products outside
the United States are subject to foreign regulatory requirements
that vary widely from country to country. Whether or not FDA
licensure has been obtained, licensure of a product by comparable
regulatory authorities of foreign countries must be obtained
prior to the commencement of marketing the product in those
countries. The time required to obtain such licensure may be
longer or shorter than

<PAGE>26

that required for FDA approval, and no assurances can be given
that such approval will be obtained.

Competition
The biotechnology and pharmaceutical industries are characterized
by rapidly evolving technology and intense competition. The
Company's competitors include pharmaceutical, chemical and
biotechnology companies, many of which have financial, technical
and marketing resources significantly greater than those of the
Company. In addition, many specialized biotechnology companies
have formed collaborations with large, established companies to
support research, development and commercialization of products
that may be competitive with those of the Company. Academic
institutions, governmental agencies and other public and private
research organizations are also conducting research activities
and seeking patent protection and may commercialize products on
their own or through joint ventures.

The Company is aware of certain products manufactured by
competitors that are used for the prevention or treatment of
certain diseases the Company has targeted for product
development, including CMV, RSV, Lyme disease, HPV infections and
organ graft rejection. For example, in the prevention of CMV
disease, the Company's CytoGam competes with several other
products including intravenous ganciclovir, manufactured by
Hoffmann-La Roche Inc. The Company is aware that a number of
physicians have prescribed CytoGam in combination with
ganciclovir for the prevention of CMV disease in certain
patients. Recently, three new drugs have been launched relating
to CMV prophylaxis and treatment: 1) Hoffmann-La Roche Inc.
received an FDA license to market a more convenient

<PAGE>27

oral formulation of ganciclovir for prevention of CMV disease in
solid organ transplant recipients and individuals with advanced
HIV infection at risk for developing CMV disease, 2)Chiron
Corporation received an FDA license to market an implant that
would deliver ganciclovir directly to the eye to treat AIDS
patients with CMV retinitis, and 3)Gilead Sciences, Inc. received
an FDA license to market intravenous cidofovir for the treatment
of CMV retinitis in AIDS patients. The Company believes that for
the prevention of RSV disease, the Company's RespiGam does not
compete directly with any product; however, the Company is aware
of one product in the U. S., ribivirin, which is indicated for
the treatment of RSV disease. The existence of these products, or
other products or treatments of which the Company is not aware,
or products or treatments that may be developed in the future,
may adversely affect the marketability of products developed by
the Company. In addition, the Company is aware of other
companies, such as OraVax, Inc., which are developing products
for the treatment and prevention of RSV. These products may
compete directly with RespiGam and may offer relative benefits,
such as ease of administration.

The Company expects its products to compete primarily on the
basis of product efficacy, safety, patient convenience,
reliability, price and patent position. In addition, the first
product to reach the market in a therapeutic or preventive area
is often at a significant competitive advantage relative to later
entrants to the market. The Company's competitive position will
also depend on its ability to attract and retain qualified
scientific and other personnel, develop effective proprietary
products, implement

<PAGE>28

product and marketing plans, obtain patent protection and secure
adequate capital resources.

EXECUTIVE OFFICERS OF THE COMPANY
<TABLE>                                                            
<S>                       <C>  <C>                             <C>
                                                               Officer
Name                      Age  Position                         Since
- ---------------------------------------------------------------------
Wayne T. Hockmeyer, Ph.D. 52   Chairman and Chief Executive    1988
                               Officer
David M. Mott             31   President and Chief Operating   1992
                               Officer
Franklin H. Top, Jr.,     61   Executive Vice President and    1988
M.D.                           Medical Director
David P. Wright           49   Executive Vice President-       1990
                               Sales and Marketing
Bogdan Dziurzynski        48   Senior Vice President           1994
                               Regulatory Affairs and
                               Quality Assurance
James F. Young, Ph.D.     44   Senior Vice President           1989
                               Research and Development
</TABLE>

Dr. Hockmeyer, prior to founding the Company in 1988, was Vice
President Research and Development at Praxis Biologics, Inc.

Mr. Mott, prior to joining the Company in 1992, was Vice
President in the Health Care Investment Banking Group at Smith
Barney, Harris Upham & Co., Inc.

Dr. Top, prior to joining the Company in 1988, was Senior Vice
President for Clinical and Regulatory Affairs at Praxis
Biologics, Inc.

<PAGE>29

Mr. Wright, prior to joining the Company in 1990, was President
of Pediatric Pharmaceuticals, Inc. (1989-1990) and Vice President
of the Gastrointestinal Business Group at Smith, Kline and French
Laboratories.

Mr. Dziurzynski, prior to joining the Company in 1994, was Vice
President of Regulatory Affairs and Quality Assurance at Immunex
Corporation.

Dr. Young, prior to joining the Company in 1989, was Director,
Department of Molecular Genetics at Smith, Kline and French
Laboratories.

EMPLOYEES
As of February 15, 1997, the Company had 252 full time employees.
These include 66 marketing and sales personnel, 31 clinical and
regulatory affairs personnel, and 98 research and development
personnel.   The Company considers relations with its employees
to be good.

                       ITEM 2.  PROPERTIES
The Company occupies, under a lease expiring in 2006, a facility
in Gaithersburg, Maryland, that contains approximately 71,000
square feet of research, development and administrative space.
In 1996, the Company acquired a 26 acre parcel of land in
Frederick, Maryland.  The Company is constructing a 68,000 square
foot multi-use biologics facility on this site to provide for the
manufacture of immune globulins and by-products from human
plasma.  In addition, the facility is designed to contain a cell

<PAGE>30


culture production area for manufacture of products such as MEDI-
493, if and when it is licensed by the FDA.

                      ITEM 3.  LEGAL PROCEEDINGS
The Company is not a party to any material legal proceedings.

     ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
Not applicable.

                             PART II
       ITEM 5. MARKET FOR MEDIMMUNE, INC.'S COMMON STOCK
                 AND RELATED SHAREHOLDER MATTERS

The Company's common stock trades on The Nasdaq Stock Market
under the symbol "MEDI".  At February 28, 1997, the Company had
382 common stockholders of record.  This figure does not
represent the actual number of beneficial owners of common stock
because shares are generally held in "street name" by securities
dealers and others for the benefit of individual owners who may
vote the shares.  The following table shows the range of high and
low closing prices and year end closing prices for the common
stock for the two most recent fiscal years.

   <TABLE>                                             
   <CAPTION>                                           
                             1996                    1995
                             ----                    ----
   <S>                <C>       <C>          <C>        <C>
                        High       Low          High       Low
                        ----      ----         ----       ----
   First Quarter      $ 20 1/8 $  14         $  7 3/4     $3 1/2
   Second Quarter       20        15 1/2       15 1/4      6 1/4
   
   
   
   

<PAGE> 31

   Third Quarter       17 1/2     11 3/8       14 3/4       8
   Fourth Quarter      17 3/4     14           21 1/2    9 1/2
   Year End Close            $ 17                      $ 20
                                                       
   </TABLE>                                            
                                
                 ITEM 6. SELECTED FINANCIAL DATA
(in thousands, except per share data)
<TABLE>                                                             
<S>                    <C>       <C>        <C>       <C>       <C>
RESULTS FOR THE YEAR     1996      1995       1994      1993      1992
                        -----      ----       ----      ----      ----
   Product sales       $35,782    $16,173   $12,054    $8,446    $2,560
   Contract revenue      5,317     11,263     6,804     6,633    10,491
                       -------   --------   -------   -------   -------
   Total revenues       41,099     27,436    18,858    15,079    13,051
Research and develop-                                           
     ment expenses      32,192     26,417    21,939    14,936    11,260
Net loss               (29,544)   (22,671)  (18,828)  (13,217)   (8,468)
Loss per common share    (1.41)    (1.41)    (1.29)    (0.96)    (0.63)
                                                                
YEAR END POSITION
   Cash and                                                     
marketable
     securities        $114,765   $38,039   $22,527   $44,424   $46,860
   Total assets         163,971    57,332    44,724    61,195    59,966
   Long term debt        70,874     1,984     2,090     2,186     2,158
   Shareholders'         72,865    43,779    34,194    53,021    46,752
equity
</TABLE>                                                        
                                
                                
   ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
               CONDITION AND RESULTS OF OPERATIONS

This review contains management's discussion of the Company's
operational results and financial condition and should be read in
conjunction with the accompanying financial statements.

OVERVIEW
     MedImmune commenced operations in April 1988 and, through
1990, revenue was generated solely from research and development
<PAGE>32
agreements and research grants.  In 1991, contract revenues rose
substantially and the Company began selling its first product,
CytoGam, to an exclusive distributor.  In December 1992, the
Company reacquired the CytoGam marketing rights from its
distributor and launched an expanded marketing program for this
product through its own sales force.
     On January 18, 1996, the Company's second product, RespiGam
was licensed for marketing by the U.S. Food and Drug
Administration ("FDA") for the prevention of serious lower
respiratory tract infection caused by RSV in children under 24
months of age with BPD or a history of prematurity. AHP's Wyeth-
Lederle Vaccines and Pediatrics sales force co-promotes RespiGam
in the United States. Because of the seasonal nature of RSV,
limited sales, if any, are expected during the second and third
quarters.
     To date, product sales have not produced sufficient revenues
to cover the Company's operating expenses.  Consequently, the
Company has experienced substantial operating losses.  While
results may vary significantly from quarter to quarter, the
Company does not expect to be profitable for the year at least
through 1998.

RESULTS OF OPERATIONS
     1996 Compared to 1995
     The increase in product sales for the year ended December
31, 1996 as compared to the year ended December 31, 1995 is due
to the commencement of sales of RespiGam in 1996 and a 14%
increase in CytoGam sales.  RespiGam sales were $17.3 million in
1996, of which $13.9 million were generated in the fourth
quarter.  CytoGam product sales increased to $18.4 million from
$16.2 million in 1995 due primarily to increased units sold.
CytoGam product sales were reduced by a $0.7 million reserve in
the 1996 third quarter for trade receivables due from a
pharmaceutical wholesaler which filed Chapter 11 bankruptcy in
August 1996.  Although the Company markets directly to hospitals
and physicians, the Company sells its products through a limited

<PAGE>33

number of pharmaceutical wholesalers and a similar event with
another wholesaler could adversely affect operating income.  The
level of future product sales will be dependent on several
factors, including, but not limited to, the timing and extent of
future regulatory approvals of the Company's products and product
candidates, availability of finished product inventory, approval
and commercialization of competitive products and the degree of
acceptance of the Company's products in the marketplace.
Currently, RespiGam finished product inventory is in short
supply, and no assurances can be given that an adequate supply
will be available to meet demand.
     Contract revenue decreased to $5.3 million in 1996 from
$11.3 million in 1995, reflecting the completion of milestone and
research funding payments under the Company's strategic alliance
with AHP, formerly American Cyanamid Company.  Under the terms of
the alliance, the Company and AHP will share in the profits or
losses of RespiGam; reimbursements or payments under this
arrangement are deducted from or added to operating expenses.
The level of contract revenues in future periods will depend
primarily upon the extent to which the Company enters into other
collaborative contractual arrangements, if any.
     Cost of sales increased to $19.7 million in 1996 from $10.7
million in 1995, due to the initiation of sales of RespiGam in
1996.  The gross margins for 1996 of 45% improved over 1995's
margins of 34% reflecting the addition of RespiGam as well as a
reduction in the royalty rate due to Connaught for CytoGam,
effective for the fourth quarter of 1995.  The Company's products
are manufactured by third parties and future per-unit cost of
sales could increase if the Company is unable to negotiate
favorable pricing.  The Company is currently constructing its own
manufacturing facility intended for some portion of the
production of its two approved products as well as other product
candidates.  This facility is not expected to be completed until
1998 and then is subject to inspection and approval by the FDA.
Cost of sales could be impacted by the potential production in
this facility.

<PAGE>34

     Research, development and clinical spending was $32.2
million in 1996 compared to $26.4 million in 1995, reflecting
increased expenditures of over $10 million for MEDI-493 RSV
Monoclonal Antibody clinical studies, including the start of a
1,502 patient Phase 3 clinical trial in the fourth quarter of
1996. This increase was offset by a decrease in clinical spending
for RespiGam, for which two Phase 3 trials were completed in mid-
1995 and licensing was received from the FDA in January 1996.
The level of the Company's total research and development
expenses in future periods will fluctuate depending on the extent
of clinical trial spending.  The Company expects clinical trial
expenses for MEDI-493 to remain high through the first half of
1997.
     Selling, administrative and general expenses increased to
$22.2 million in 1996 from $11.7 million in 1995, reflecting
primarily the launch of RespiGam in 1996.  Approximately 45
additional sales and marketing personnel have been hired since
September 30, 1995, primarily in 1996, to staff for the launch of
RespiGam, resulting in an increase of over $5 million in
salaries, commissions, recruiting, travel and related costs.  An
additional $5.2 million was spent on marketing and selling
programs for the launch of RespiGam in 1996.  Sales detailing
costs to the Company's corporate partner for RespiGam, AHP,
approximated $1.8 million in 1996 and none in 1995.  Offsetting
the increased costs in 1996 was a $4.3 million reimbursement from
AHP of their share of the product line loss on RespiGam for the
year, calculated under the terms of the strategic alliance.  In
1997 and future years, AHP's share of RespiGam's potential
profits will result in an increase to selling expenses. General
and administrative expenses increased by $0.7 million reflecting
increased headcount and legal and other costs associated with the
new manufacturing facility.
     In December 1995, the Company and Connaught entered into an
amendment to the agreement signed in 1992 in which the Company
reacquired the rights to market CytoGam.  In connection with this
amendment, the Company made a lump sum payment of $2.7 million to

<PAGE>35

Connaught in the first half of 1996 upon completion of certain
modifications to Connaught's filling and packaging facility.  The
$2.7 million charge was expensed as other operating expenses in
1995.
     Interest income increased to $5.7 million in 1996 compared
to $1.7 million in 1995.  The increase reflects the proceeds from
the Company's equity and convertible debt offerings in 1996,
resulting in higher cash balances available for investment,
partially offset by a decrease in interest rates which lowered
the overall portfolio yield.
     Interest expense increased to $2.3 million in 1996 from $0.3
million in 1995, reflecting interest on the convertible
subordinated notes issued in July 1996.  Interest expense in 1996
is net of $0.3 million of interest capitalized against the new
manufacturing facility and the pilot plant expansion.
     The 1996 net loss of $29.5 million, or $1.41 per common
share, compared to a 1995 net loss of $22.7 million, or $1.41 per
common share.  Shares used in computing loss per share were 21.0
million and 16.1 million, respectively. The Company does not
believe that inflation had a material effect on its financial
statements.
     These results were consistent with the Company's objectives
for the year and with the continued development of its
immunotherapeutic and vaccine products.  The factors affecting
1996 results may continue to affect near-term financial results.
     1995 COMPARED TO 1994
     Revenues in 1995 were $27.4 million compared to $18.9
million in 1994. Sales of CytoGam increased to $16.2 million in
1995 from $12.1 million in 1994, reflecting a 23% increase in
units sold as well as the impact of two price increases since
July 1, 1994.  Contract revenues increased to $11.3 million from
$6.8 million in 1994, primarily reflecting funding provided under
the Company's strategic alliance with AHP.
     Cost of sales for CytoGam rose to $10.7 million in 1995 from
$7.7 million in 1994, reflecting the increase in unit volume and

<PAGE>36

an increase in product unit costs, which include the addition of
a viral inactivation process, increased unit costs of plasma
paste and increased costs for finished product acquired from a
supplier.  Research, development and clinical spending was $26.4
million in 1995 compared to $21.9 million in 1994, reflecting a
research license payment of $2.0 million to BioTransplant,
Incorporated ("BTI") for BTI-322, and increased expenditures for
RespiGam and MEDI-493 RSV Monoclonal Antibody clinical studies.
Selling, administrative and general expenses increased to $11.7
million in 1995 from $9.2 million in 1994, reflecting increased
marketing expenditures for RespiGam, a $0.6 million charge
recorded in the fourth quarter in connection with the settlement
of the securities class action lawsuit that had been filed
against the Company, and a $0.5 million charge recorded in the
fourth quarter relating to certain expenditures associated with
preparations for the construction of a manufacturing facility.
     In December 1995, the Company entered into a Stipulation of
Settlement resolving a pending securities class action lawsuit
against the Company.  The Company recorded a charge of
approximately $0.6 million in 1995 in connection with the
settlement.  The Company's insurers contributed the remaining
$3.6 million in 1996, for a total settlement of $4.25 million.
     Other operating expenses include the charge for
restructuring of the Connaught agreement as discussed above.
     Interest income of $1.7 million was earned in the year ended
December 31, 1995 compared to $1.4 million in 1994, reflecting an
increase in interest rates which improved overall portfolio
yield.  Interest expense of $0.3 million was incurred in both
1995 and 1994.
     The 1995 net loss of $22.7 million, or $1.41 per common
share, compared to a 1994 net loss of $18.8 million, or $1.29 per
common share.  Shares used in computing loss per share were 16.1
million and 14.6 million, respectively.

     LIQUIDITY AND CAPITAL RESOURCES

<PAGE>37

     Cash and marketable securities were $114.8 million at 1996
year end compared to $38.0 million at 1995 year end. Working
capital was $113.3 million at 1996 year end versus $38.0 million
at 1995 year end.
     Net cash used in 1996 operating activities was $25.5 million
compared to $15.9 million used in 1995 and $20.3 million used in
1994.  The cash outflow from operations in 1996 reflected the net
loss adjusted for depreciation and amortization and working
capital changes.  Working capital changes include: 1) a $7.1
million increase in trade and contract receivables due to
significant fourth quarter sales of RespiGam; 2) a $5.6 million
increase in accounts payable and accrued expenses, reflecting
accrued costs associated with the MEDI-493 Phase 3 clinical
trial, accrued manufacturing costs for production of the
Company's two products, and accrued marketing and selling costs,
including commissions; and 3) a $2.1 million increase in accrued
interest reflecting interest due on the convertible subordinated
notes, paid January 1997.  The cash outflow from operations in
1995 reflected the net loss adjusted for depreciation and
amortization and working capital changes, including a $1.9
million decrease in trade and contract receivables and a $2.2
million increase in accrued expenses primarily related to the
amendment to the Connaught agreement.
     Cash flows from financing activities were $125.4 million in
1996 compared to $32.2 million in 1995.  In February 1996, the
Company completed a public offering of 3.45 million shares of
common stock resulting in net proceeds of $58 million and in July
1996, the Company completed a private placement of $60 million
aggregate principal amount of 7% convertible subordinated notes
due 2003 for net proceeds of $58 million.  Additionally, the
Company received $9 million of proceeds from state government
loans in connection with the financing of its new manufacturing
facility.  In 1995, the Company received $7.7 million from a
private placement of the Company's common stock with a group of
foreign institutional investors, $9.5 million from a sale of the
Company's common stock to Baxter in connection with an alliance
<PAGE>38
entered into in June 1995, and $15.0 million through a sale of
the Company's common stock to AHP.
     Capital expenditures in 1996 were $22.7 million compared to
$1.1 million in 1995.  The 1996 expenditures include $17.5
million for the design and construction of the Company's new
manufacturing facility located in Frederick, Maryland and the
expansion of the pilot plant at the Gaithersburg headquarters.
Additional expenditures were for land, laboratory equipment and
administrative expansion.  The 1995 expenditures included
expenditures for additional laboratory and office equipment as
well as initial design work for the new manufacturing facility.
     Capital expenditures in 1997 are expected to approximate $34
million, due mostly to the construction of the manufacturing
facility and the expansion of the development pilot plant.  These
two projects are anticipated to cost a total of $56 million and
are intended to be financed from the proceeds of the convertible
debt offering and state and local loans totaling $11.8 million.
The Company entered into an engineering, procurement,
construction and validation services agreement with Fluor Daniel
to design and construct the manufacturing facility in Frederick,
Maryland.  The agreement provides for an early completion bonus
to Fluor Daniel if the facility is completed ahead of schedule or
liquidated damages paid to the Company for certain delays.  The
facility, expected to employ 50 to 100 people, will provide
capacity for the Company's immune globulin products and
monoclonal antibody product candidates.  The facility is expected
to be completed and initial production commenced during 1998.
There can be no assurance that when the facility is constructed
appropriate regulatory approvals will be obtained to enable the
use of the facility for production of the Company's products or
product candidates.  The Company's pilot plant expansion is
intended to support the further production of materials for Phase
3 clinical trials and market entry requirements, if needed, for
MEDI-493.
     In addition, the Company is obligated in 1997 to provide
$14.5 million in funding for various clinical trials, research
<PAGE>39
and development and license agreements with certain institutions.
The Company's existing funds, together with funds contemplated to
be generated from product sales and investment income are
expected to provide sufficient liquidity to meet the anticipated
needs of the business for at least the next 18 months, absent the
occurrence of any unforeseen events.

<PAGE>40

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
                                
                <TABLE>
               <CAPTION>
             BALANCE SHEETS
(in thousands, except share data)                              
<S>                                      <C>             <C>
                                         December 31,    December 31,
                                             1996            1995
                                          ----------      ----------
ASSETS                                                               
  Cash and cash equivalents                   $12,629        $14,165
  Marketable securities                       102,136         23,874
  Trade receivables, net                        8,123          2,687
  Contract receivables, net                     2,164          1,210
  Inventory, net                                6,060          6,027
  Other current assets                          1,713          1,027
                                            ----------     ----------
      Total Current Assets                    132,825         48,990
  Property and equipment, net                  29,087          8,255
  Other assets                                  2,059             87
                                            ----------     ----------
    Total Assets                             $163,971        $57,332
                                            ==========     ==========
LIABILITIES AND SHAREHOLDERS' EQUITY                     
  Accounts payable, trade                      $3,942         $2,318
  Accrued expenses                             10,509          6,538
  Accrued interest                              2,057             --
  Product royalties payable                     2,559          1,776
  Other liabilities                               469            337
                                            ----------     ----------
      Total Current Liabilities                19,536         10,969
  Long term debt                               70,874          1,984
  Other liabilities                               696            600
                                            ----------     ----------
     Total Liabilities                         91,106         13,553
                                            ----------     ----------
  Commitments and Contingencies                                      
                                                                     
SHAREHOLDERS' EQUITY                                                 
  Preferred stock, $.01 par value;                 --             --
     authorized 5,524,525 shares;                                    
     none issued or outstanding                                      


  Common stock, $.01 par value;                   218            177
     authorized 60,000,000 shares;                                   
     issued and outstanding 21,836,763                               
     and 17,706,137 at December 31,                                  
     1996 and 1995, respectively                                     
  Paid-in capital                             172,024        113,435
  Accumulated deficit                         (99,377)       (69,833)
                                            ----------     ----------
      Total Shareholders' Equity               72,865         43,779
                                            ----------     ----------
      Total Liabilities and                  $163,971        $57,332
           Shareholders' Equity             ==========     ==========
The accompanying notes are an integral part of these financial
statements
</TABLE>
                                
                            <PAGE>42
                                
<TABLE>
<CAPTION>
Statements of Operations
(in thousands, except share data)
                                                                    
                                       For the year ended December 31,
                                      ---------------------------------
                                         1996         1995        1994
                                        --------     --------    --------
<S>                                   <C>           <C>           <C>
REVENUES                                                                 
  Product sales                        $35,782       $16,173      $12,054
  Contracts                              5,317        11,263        6,804
                                        --------     --------    --------
    Total Revenues                      41,099        27,436       18,858
                                        --------     --------    --------
COSTS AND EXPENSES                                                       
  Cost of sales                         19,678        10,678        7,724
  Research and development              32,192        26,417       21,939
  Selling, administrative               22,165        11,719        9,161
     and general
  Other operating expenses                --           2,700         --
                                        --------     --------    --------
    Total Expenses                      74,035        51,514       38,824
                                        --------     --------    --------
Operating Loss                         (32,936)      (24,078)     (19,966)
  Interest income                        5,655         1,657        1,394
  Interest expense                      (2,263)         (250)        (256)
                                        --------     --------    --------
Net Loss                              $(29,544)     $(22,671)    $(18,828)
                                        ========     ========    ========
Loss Per Common Share                   $(1.41)       $(1.41)      $(1.29)
                                        ========     ========    ========
Shares Used in Computing                                                 
  Loss Per Common Share                 21,019        16,061       14,614
                                        ========     ========    ========
The accompanying notes are an integral part of these financial statements
</TABLE>
                                
                                
                            <PAGE>43
                                
<TABLE>                                                                
<CAPTION>                                                              
Statements of Cash Flows                                               
(in thousands)                               For the year ended December 31,
                                            --------------------------------
                                               1996       1995       1994
                                             --------   ---------   ---------
<S>                                         <C>         <C>         <C>
CASH FLOWS FROM OPERATING ACTIVITIES                                         
  Net loss                                   $(29,544)  $(22,671)   $(18,828)
  Adjustments to reconcile net loss to                                        
    net cash used in operating activities:                                    
    Depreciation and amortization               1,843      1,554       1,487
    Amortization of premium (discount) on                                     
        marketable securities                     447       (418)        127
    Bad debt expense                              724          5          16
    Inventory reserve                            (409)       417        --
    Amortization of debt issue costs              155       --          --
    Amortization of deferred rent                  96        119         181
  Increase(decrease) in cash due to                                           
    changes in assets and liabilities:                                        
    Trade receivables                          (6,160)      (987)       (843)
    Contract receivables                         (954)     2,865      (3,119)
    Inventory                                     376       (945)     (2,029)
    Other assets                                 (641)     1,111         416
    Accounts payable and accrued expenses       5,595      2,154       1,673
    Product royalties payable                     783        818         523
    Accrued interest                            2,057       --         --
    Other liabilities                             119         35          92
                                             --------    --------   ---------
        Net cash used in operating            (25,513)   (15,943)    (20,304)
          activities
                                             --------    --------    --------
CASH FLOWS FROM INVESTING ACTIVITIES                                         
  Investments in securities available        (131,908)   (38,587)    (35,144)
    for sale                                                        
  Maturities of securities available           53,199     31,308      40,642
    for sale                                                        
  Capital expenditures                        (22,675)    (1,116)     (1,354)
                                             --------    --------   ---------
        Net cash (used in) provided by       (101,384)    (8,395)      4,144
          investing activities                                               
                                             --------    --------   ---------
CASH FLOWS FROM FINANCING ACTIVITIES                                         
  Proceeds from issuance of common             58,630     32,256           1
    stock                                                           
  Proceeds from issuance of long               69,000       --         --
   term debt                                                            
  Deferred costs from convertible              (2,172)      --         --
    debt issuance                                                       
  Decrease in long term debt obligations          (97)      (103)       (113)
                                             --------    --------   ---------
        Net cash provided by (used in)        125,361     32,153        (112)
          financing activities                                               
                                             --------    --------   ---------
Net (decrease) increase in cash and cash       (1,536)     7,815     (16,272)
    equivalents                                                              
Cash and cash equivalents at beginning         14,165      6,350      22,622
    of year                                                                  
                                             --------    --------   ---------
Cash and cash equivalents at end of                                          
    year                                      $12,629    $14,165      $6,350
                                             ========    ========   =========
The accompanying notes are an integral part of these financial statements.
</TABLE>
                                
                                
                            <PAGE>45
                                
<TABLE>
<CAPTION>
Statements of Shareholders' Equity
(in thousands, except share data)
                                                                   
                         Common Stock,$.01 par                     
                           ---------------     Paid-in  Accumulated  
                           Shares    Amount    Capital   Deficit    Total
                          ---------  -------   -------  ---------  -------
<S>                      <C>         <C>      <C>       <C>        <C>
Balance,                                                           
  December 31, 1993       14,609,622    $146  $81,209   $(28,334)  $53,021
                                                                           
Common stock options                                                       
  exercised                    8,420      --        1          --        1
                                            
Net loss                          --      --       --    (18,828)  (18,828)
                            -------- -------    -------  --------  --------
Balance,                                                           
  December 31, 1994       14,618,042     146   81,210    (47,162)   34,194
                                                                           
Common stock options                                                       
  exercised                   43,817      --       92          --       92
Private placement of                                                       
  common stock, May                                                        
  1995,at $6.85 per                                                        
  share, net of under-                                                     
  writing commissions                                                      
  and expenses of $825     1,250,000      13    7,728          --    7,741
Private placement of                                                       
  common stock, June                                                       
  1995,at $11.49 per                                                       
  share, net of fees and                                                   
  expenses of $40            826,536       8    9,452          --    9,460
Private placement of                                                       
  common stock, October                                                    
  1995, at $15.50 per                                                      
  share, net of fees and                                                   
  expenses of $37            967,742      10   14,953          --    14,963
Net loss                          --      --       --    (22,671)   (22,671)
                            -------- -------  --------   --------   -------
Balance,                                                           
  December 31, 1995       17,706,137     177  113,435    (69,833)    43,779
                                                                           
Common stock options                                                       
  exercised                  288,484       3      700          --       703
Sale of common stock,                                                      
  February 1996 public                                                     
  offering at $18.00 per                                                   
  share, net of under-                                                     
  writing commissions                                                      
  and expenses of $4,173   3,450,000      34   57,893          --    57,927
Conversion of Series A                                                     
  Convertible Preferred                                                    
  Stock                      392,142       4       (4)         --       --
Net loss                          --      --       --    (29,544)   (29,544)
                            -------- -------   --------  --------  --------
Balance,                                                           
  December 31, 1996       21,836,763    $218  $172,024  $(99,377)   $72,865
                          ========== =======   ======== =========  ========

The accompanying notes are an integral part of these financial statements.
</TABLE>
                                
                                
                  NOTES TO FINANCIAL STATEMENTS
         (in thousands, except share and per share data)
                                
1.  ORGANIZATION
MedImmune, Inc. (the Company), a Delaware corporation, is a
biotechnology company focused on the development and marketing of
products for the prevention and treatment of infectious diseases
and for use in transplantation medicine.  The Company was
originally incorporated on June 29, 1987 and commenced operations
on April 22, 1988.
                                
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Significant accounting policies applied in the preparation
of these financial statements are as follows:
                                
                                
                                
<PAGE>47
                               
Cash and Cash Equivalents
    The Company considers all highly liquid instruments
purchased with an original maturity of three months or less to be
cash equivalents.

Marketable Securities
     Marketable securities include investments with original
maturities of greater than three months having a remaining
maturity of less than 24 months.  The Company's securities are
held for an unspecified period of time and may be sold to meet
liquidity needs.  The securities included as marketable
securities are considered available-for-sale as defined by
Statement of Financial Accounting Standards No. 115, "Accounting
for Certain Investments in Debt and Equity Securities".
Amortized cost of marketable securities approximates market;
therefore, no adjustment has been made to shareholders' equity as
a result of changes in market value to these securities.
Interest income is accrued as earned.

Concentration of Credit Risk
     The Company has invested its excess cash generally in
securities of the U.S. Treasury, U.S. government agencies,
corporate debt securities, commercial paper and money market
funds with strong credit ratings and deposits with a major bank.
The Company has not experienced any significant losses on its
investments.  The Company sells its products primarily to a
limited number of pharmaceutical wholesalers without requiring
collateral.  The Company periodically assesses the financial
strength of these wholesalers and establishes allowances for
anticipated losses when necessary.

Inventory
     Inventory is stated at the lower of cost or market.  Cost is

<PAGE>48
determined using a weighted-average approach which approximates
the first-in, first-out method.  The Company receives revenues
from sales of a by-product that results from production of the
Company's principal products.  These sales are accounted for as a
reduction in the cost of the principal products.

Product Sales
     Product sales are recognized upon shipment of the product to
wholesalers.  Product sales are recorded net of reserves for
estimated chargebacks, returns, discounts, and Medicaid rebates.
The Company maintains reserves at a level which management
believes is sufficient to cover estimated future requirements.
Allowances for discounts, returns, bad debts, chargebacks and
Medicaid rebates, which are netted against accounts receivable,
totaled $2,170 and $330 at December 31, 1996 and 1995,
respectively.  Product royalty expense is recognized concurrently
with the recognition of product revenue. Royalty expense,
included in cost of sales, was $4,282, $3,056 and $2,416 for the
years ended December 31, 1996, 1995 and 1994, respectively.
                        
Contract Revenues
     Contract revenues are recognized over the fixed term of the
contract or, where appropriate, as the related expenses are
incurred.  Non-refundable fees or milestone payments in
connection with research and development or commercialization
agreements are recognized when they are earned in accordance with
the applicable performance requirements and contractual terms.
Payments received that are related to future performance are
deferred and recorded as revenues as they are earned over
specified future performance periods.
                                                                
<PAGE>49
Property and Equipment
     Property and equipment are stated at cost.  Depreciation of
laboratory and computer equipment is computed on the straight-
line method based upon estimated useful lives ranging from 3 to 7
years. Amortization of leasehold improvements is computed on the
straight-line method based on the shorter of the estimated useful
life of the improvement or the term of the lease.  Upon the
disposition of assets, the costs and related accumulated
depreciation are removed from the accounts and any resulting gain
or loss is included in the statements of operations.  Repairs and
maintenance costs are expensed as incurred and were $537, $540
and $350 for the years ended December 31, 1996, 1995 and 1994,
respectively.

Lease Expense
    Expense related to the facility lease is recognized on a
straight-line basis over the lease term.  The difference between
rent expense incurred and the amount of rent paid is recorded as
deferred rent and is included in other liabilities on the balance
sheet.

Income Taxes
    Deferred income taxes are recognized for the tax
consequences in future years of differences between the tax bases
of assets and liabilities and their financial reporting amounts
at each year end based on enacted tax laws and statutory tax
rates applicable to the periods in which the differences are
expected to affect taxable income.  Valuation allowances are
established when necessary to reduce deferred tax assets to the
amount expected to be realized.  Income tax expense is the tax
payable for the period and the change during the period in
deferred tax assets and liabilities.
                                
<PAGE>50
Earnings (Loss) Per Common Share
    Earnings (loss) per common share has been computed by
dividing net earnings (loss) by the weighted average number of
common shares and equivalents outstanding.  Common share
equivalents, representing shares issuable upon assumed exercise
of stock options and warrants and conversion of debt, are
included in the computation in periods where there are earnings
and when common share equivalents would have a dilutive effect.
Common share equivalents are not included in the computation in
periods with a loss because they are antidilutive.

Use of Estimates
    The preparation of financial statements in conformity with
generally accepted accounting principles requires management to
make estimates and assumptions that affect the amounts reported
in the financial statements and accompanying notes.  Actual
results could differ from those estimates.
                                
3.  INVENTORY
     Inventory at December 31, is comprised of the following:
                                    1996      1995
                                  ------     -----
          Raw materials           $2,073    $2,193
          Work in process          2,758     2,510
          Finished goods           1,229     1,324
                                  ------     -----
                                  $6,060    $6,027
                                  ======   =======


4. PROPERTY AND EQUIPMENT

<PAGE>51

      Property and equipment, stated at cost at December  31,  is
comprised of the following:
   <TABLE>                                                    
   <S>                                         <C>        <C>
                                                  1996      1995
                                                 -----     -----
   Land                                        $ 1,521    $   --
   Leasehold improvements                        6,860      6,099
   Laboratory equipment                          7,427      5,254
   Office furniture, computers and equipment     3,235      1,854
   Construction in progress                     17,376        537
                                               -------    -------
                                                36,419     13,744
   Less accumulated depreciation and                      
       amortization                             (7,332)    (5,489)
                                               -------    -------
                                               $29,087     $8,255
                                               =======    =======
   </TABLE>                                               

Construction in progress at December 31, 1996 includes $300 of
capitalized interest related to the design and construction of
the Company's manufacturing facility in Frederick, Maryland and
for expansion of its pilot plant in Gaithersburg, Maryland.

5.  FACILITIES LEASES
      The  Company  entered  into a 15-year  lease  beginning  in
November  1991,  as amended in 1993 and 1996, for  administrative
and  laboratory facilities in Gaithersburg, Maryland.  Under  the

<PAGE>52

lease, the Company is obligated to pay a basic monthly rent which
will  increase 3% each lease year and in 1996 totaled $855.   The
lease  also  requires the Company to pay for  utilities  and  its
proportionate   share  of  taxes,  assessments,   insurance   and
maintenance costs.  Rent expense for the years ended December 31,
1996, 1995 and 1994 was $1,113, $946 and $882, respectively.  The
1995  and  1994 expenses are net of sublease rental  receipts  of
approximately  $140  per  year from an affiliated  company.   The
sublease agreement was terminated in October 1995.

      The  Company's  future  minimum lease  payments  under  the
facility operating lease are as follows:

      Year ending December 31,
      -----------------------
      1997              $    991
      1998                 1,021
      1999                 1,052
      2000                 1,084
      2001                 1,116
      thereafter           6,008
                        --------
                        $ 11,272
                        ========


6.  LONG TERM DEBT
      Long  term  debt  at  December  31,  is  comprised  of  the
following:

<PAGE>53

    <TABLE>                                                       
    <S>                                       <C>        <C>
                                                 1996       1995
                                                -----      -----
    7% convertible subordinated notes, due                        
    2003                                      $60,000    $    --
    
    7.53% note due to Maryland Industrial                
    Development Finance Authority, due 2007     5,000         --
    
    4% note due to Maryland Department of                
    Business and Economic Development, due               
    2016                                        4,000         --
    
    Notes payable to landlord, due through               
    2006, interest 11.5%-13%                    1,992      2,089
    
                                               -------    -------
                                               70,992      2,089
    
    Less current portion                         (118)      (105)
                                               -------    -------
                                              $70,874     $1,984
                                              =======    =======
    </TABLE>                                             

      The convertible subordinated notes were issued in July 1996
and  are  convertible at the option of the holder into  3,038,780
shares  of  the Company's common stock at a conversion  price  of
$19.68 per share, subject to adjustments in certain events.   The
notes  are not redeemable by the Company prior to July  7,  1999.
After that date, the notes are redeemable with 30 days notice  at
a  declining  premium until the due date, plus accrued  interest.
The  notes  are subordinated to all senior debts of  the  Company
including  the  state loans and the loans from the landlord.  The

<PAGE>54

Company may be required to redeem the notes at amounts up to 107%
of  the  principal amount in the event of a change in control  of
the Company.
      Principal and interest payments on the state notes begin in
1998.   Pursuant to the terms of the agreements, the  Company  is
required  to  meet certain financial and non-financial  covenants
including maintaining minimum cash balances and net worth ratios.
Cash  and  cash equivalents at December 31, 1996 include  a  $400
compensating  balance  related  to  the  notes.   The  notes  are
collateralized  by the land, buildings and building  fixtures  of
the new manufacturing facility.  Additional loans of $2.8 million
are  also  available  and  will be  drawn  down  in  1997.    The
agreements include a provision for early retirement of the  notes
by the Company.
      Maturities of long term debt for the next five years are as
follows: 1997, $118; 1998, $508; 1999, $678; 2000, $731 and 2001,
$789.  Interest paid was $304, $250 and $256, for the years ended
December  31, 1996, 1995 and 1994, respectively.  The fair  value
of  the  Company's long term debt at December 31, 1996, based  on
quoted  market prices or discounted cash flows based on currently
available  borrowing rates, was $74,040 compared to its  carrying
value of $70,992.

7.  EQUITY TRANSACTIONS
      In August 1996, the shareholders of the Company approved an
increase in the authorized number of shares of common stock  from
30 million shares to 60 million shares.
      The  holders  of  the Series A Convertible Preferred  Stock
warrants agreed that if such warrants are exercised, the  holders
thereof  will simultaneously exercise their right to convert  the

<PAGE>55

Series  A  Convertible Preferred Stock received upon exercise  of
the   warrants  into  2,524,525  shares  of  common  stock.   The
warrants,  which expire on January 12, 2000, are  exercisable  at
$1.00  per  share.   Pursuant  to an  amendment  to  the  warrant
agreement,  the  holders  may elect a cashless  exercise  of  the
warrants  for  a  reduced  number of common  shares  based  on  a
calculation of the fair market value of the common stock  on  the
exercise  date. During 1996, 415,873 of the Series A  Convertible
Preferred  Stock warrants were exercised and converted through  a
cashless  exercise  into 392,142 shares of common  stock.  As  of
December  31, 1996, the Company has reserved 2,108,652 shares  of
common  stock  for  issuance  upon conversion  of  the  Series  A
Convertible Preferred Stock.  The holders of common stock  issued
upon  conversion of the Convertible Preferred Stock have, subject
to certain limitations, piggyback and demand registration rights.

8.  Common Stock Options
    In April 1991, the Board of Directors adopted the 1991
Plan, amended in March 1992 and March 1995, under which 3,500,000
shares  of common stock were reserved for issuance upon  exercise
of  options granted to employees, consultants and advisors of the
Company.  In May 1993, a Non-Employee Directors Stock Option Plan
was  approved by the shareholders under which 250,000  shares  of
common  stock were reserved for issuance upon exercise of options
granted  to  non-employee directors.  The 1991 Plan provides  for
the grant of incentive and nonqualified stock options and the Non-
Employee  Directors Plan provides for the grant  of  nonqualified
stock  options.  Both Plans are administered by the  Compensation
and  Stock Committee of the Board of Directors. The maximum  term
of each option granted is 10 years.  The option

<PAGE>56

prices  under  the 1991 Plan and the Non-Employee Directors  Plan
are  equal  to the closing market price on the day prior  to  the
date of grant.
      Prior  to  the establishment of these plans, the  Board  of
Directors  granted  options and periodically set  option  prices.
The  Board of Directors established option prices, prior  to  the
Company's initial public offering on May 8, 1991, based  upon  an
evaluation  of  the  fair market value of  the  Company's  stock.
Options normally vest on the anniversary date of the grant over a
three  to five year period.  The Company has reserved a total  of
4,237,730  shares of common stock for issuance under these  plans
as  of  December 31, 1996.  Related stock option activity  is  as
follows:

<TABLE>                                         
<CAPTION>
                  Options Granted                                  
                     Prior to                                      
                 Establishment of                            Non-Employee
                  the 1991 Plan           1991 Plan         Directors Plan
                ------------------    ------------------   -----------------
<S>            <C>         <C>       <C>        <C>       <C>       <C>
                             Wtd.                 Wtd.                Wtd.
                             Avg.                 Avg.                Avg.
                           Exercise             Exercise            Exercise
                            Price                 Price               Price
                 Shares      Per                   Per                 Per
                            Share      Shares     Share    Shares     Share
Balance,         845,985                                                     
Dec 31, 1993                         1,243,367              10,000
Granted                 -            1,130,728              30,000           
Exercised         (8,420)                     -                  -           
Cancelled        (15,400)             (920,113)                  -           
                 --------             ---------            -------           
Balance,                                                                     
Dec 31, 1994     822,165             1,453,982              40,000
Granted                 -    $    -  1,175,600      $8.13   30,000     $12.58
Exercised        (31,800)      6.90    (11,017)      7.60        -          -
Cancelled           (200)       .80   (325,819)     11.46        -          -
                 --------             ---------            -------           
Balance,                                                                     
Dec 31, 1995     790,165       3.10  2,292,746      11.26   70,000      10.75
Granted                 -         -    814,400      17.02   15,000      17.00
Exercised       (232,804)       .64    (55,680)      9.96        -          -
Cancelled         (2,000)     51.00   (109,407)     13.07        -          -
                 --------             ---------            -------           
                                                                 -
Balance,                                                                     
Dec 31, 1996     555,361      $3.96  2,942,059     $12.81   85,000     $11.85
                 ========             =========            =======           

As of December 31, 1996:
Range of exercise                                                 
prices              $.01 to 21.00      $3.50 to 43.75      $5.00 to 18.75

Wtd. Avg.                                                         
remaining                                                         
contractual life                                                  
for options                                                       
outstanding                                                       
(years)                  5.4                8.0                  8.1

Options                                                           
exercisable            555,361           1,056,105             30,000

Wtd. Avg.                                                         
exercise price of                                                 
options                                                           
exercisable             $3.96              $13.30              $10.96
</TABLE>                                                          

     In February 1994, the Board of Directors authorized a Stock
Option Exchange Program which offered participants in the 1991
Plan holding stock options with exercise prices of $15.00 or
higher the choice to exchange their existing stock options for a
lesser number of new stock options having an exercise price of
$11.75, the fair market value on the date of grant, and a term of
8 1/2 years.  As a result of the exchange program, 813,800

<PAGE>58

options shares were exchanged for 564,478 new option shares which
resulted in the net cancellation of 249,322 option shares.
     Total option grants outstanding for all plans as of
December 31, 1996 were 3,582,420.  There were 490,310 and 165,000
shares available for future option grants at December 31, 1996
under the 1991 Plan and the Non-Employee Directors Plan,
respectively.
     The Company has adopted the disclosure-only provisions of
Statement of Financial Accounting Standards No. 123 (SFAS 123) as
they pertain to financial statement recognition of compensation
expense attributable to option grants.  As such, no compensation
cost has been recognized on the Company's option plans.  If the
Company had elected to recognize compensation cost for the 1991
Plan and the Non-Employee Directors Plan consistent with SFAS
123, the Company's net loss and loss per share on a pro forma
basis would be:
                                           1996      1995
                                          -----     -----
      Net loss - as reported            $29,544   $22,671
      Net loss - pro forma              $31,246   $23,850
      Loss per share - as reported        $1.41     $1.41
      Loss per share - pro forma          $1.49     $1.48

The pro forma expense related to the stock options is recognized
over the vesting period, generally five years.  The fair value of
each option grant was estimated using the Black-Scholes option
pricing model with the following weighted average assumptions for
each year:

<PAGE>59



                                               1996      1995
                                              -----     -----
       Risk-free interest rate                6.09%     6.76%
       Expected life of options - years           7         7
       Expected stock price volatility          75%       75%
       Expected dividend yield                  N/A       N/A

The weighted average fair value of options granted during 1996
and 1995 was $12.63 and $6.02 respectively.

9.  Co-Development and Co-Promotion Agreements
     On November 8, 1993, the Company signed definitive
agreements with American Cyanamid Company to form an alliance in
the United States for the development and marketing of three
generations of products to prevent and treat respiratory
syncytial virus (RSV) and for the marketing of a new anti-
infective product, ZOSYN, developed by American Cyanamid.   The
parties agreed to co-promote and share profits or losses on the
Company's RSV product, RespiGam, which was licensed for marketing
by the United States Food and Drug Administration on January 18,
1996.  In 1994, AHP acquired American Cyanamid and in October
1995, AHP invested $15,000 in the Company through the purchase of
967,742 shares of common stock.  In connection with this
investment, the Company and AHP agreed to amend certain terms of
agreements entered into concurrently with the formation of their
1993 alliance.  Pursuant to these amendments, AHP's funding
obligations and co-promotion rights with respect to the second
generation RSV product being developed by the Company were
terminated, and the Company returned its right to co-promote
ZOSYN to AHP.  In addition, the Company's obligation to co-fund

<PAGE>60

and to co-promote an RSV vaccine being developed by AHP was
converted into the right to receive royalties on any sales of
this vaccine, and AHP was granted the right to receive royalties
on any sales of the Company's second generation RSV product
currently under development.  The obligations undertaken by AHP
in 1993 to fund certain costs related to RespiGam, to make
certain milestone payments, including $4.5 million upon licensure
by the FDA, and to co-promote RespiGam are unchanged.  The $4.5
million milestone payment was received and recorded as contract
revenue in 1996.  Revenue of $4,791, $10,744, and $6,173 earned
in 1996, 1995 and 1994, respectively, associated with these
agreements is included as contract revenue in the accompanying
statements of operations.  Additionally, $4,299 of reimbursement
for co-promotion activity has been netted against selling,
general and administrative expense for the year ended
December 31, 1996.

10.  Connaught Agreement
     In December 1995, the Company and Connaught amended the
agreement originally signed in 1992 under which the Company
reacquired the rights to market CytoGam.  The amendment provides
for a reduction in the royalty rate to be paid by the Company on
sales of CytoGam after September 30, 1995, and an agreement
pursuant to which Connaught will fill and package the Company's
immune globulin products through 1998.  In connection with this
amendment, the Company made a lump sum payment of $2.7 million in
1996 to Connaught upon completion of certain modifications to
Connaught's filling and packaging facility.  The $2.7 million
charge is included as other operating expense in the accompanying
statements of operations for the year ended December 31, 1995.

<PAGE>61

11.    INCOME TAXES
     The tax effects of the temporary differences giving rise to
the Company's deferred tax assets at December 31, are as follows:

                                                1996        1995
                                              ------       -----
     Net operating loss carryforwards       $ 35,562    $ 24,924
     Other                                     4,377       3,113
                                             -------      ------
                                              39,939      28,037
     Valuation allowance                     (39,939)    (28,037)
                                             -------      ------
          Net deferred taxes                $     --    $     --
                                            ========    ========

     Realization of net deferred tax assets at the balance sheet
date is dependent on future earnings which are uncertain.
Accordingly, a full valuation allowance was recorded against the
assets.
     As of December 31, 1996, the Company had net operating loss
carryforwards available for federal income tax reporting expiring
in years 2003 through 2011 amounting to $111.7 million.  In
addition, the Company has $2 million of general business credit
carryforwards expiring through 2011.
     The total regular tax net operating loss available of $111.7
million includes $19.6 million which, when realized, will not
affect financial statement income but will be recorded directly
to shareholders' equity.  The realization of net operating losses
may be limited by Internal Revenue Code, Section 382.

<PAGE>62

12.  COMMITMENTS AND CONTINGENCIES
     Research, Development and License Agreements
     Baxter Healthcare Corporation.  In June 1995 the Company
entered into an exclusive, royalty-bearing license agreement with
Baxter Healthcare Corporation ("Baxter") to commercialize
RespiGam outside North America.  Within its territory, Baxter
will be responsible for funding clinical and regulatory
activities and for manufacturing and marketing RespiGam.  Upon
the achievement of certain sales milestones, Baxter is obligated
to reimburse the Company for certain previously funded research
and development activities.  Concurrent with the execution of the
license agreement, Baxter also purchased 826,536 shares of common
stock for $9.5 million.
     BioTransplant, Incorporated.  In October 1995, the Company
and BioTransplant, Incorporated ("BTI") formed a strategic
alliance for the development of products to treat and prevent
organ transplant rejection.  The alliance is based upon the
development of products derived from BTI's anti-CD2 antibody BTI-
322, the Company's anti-T cell receptor antibody MEDI-500 and
future generations of products derived from these two molecules,
including, but not limited to, MEDI-507.  Pursuant to the
alliance, the Company received an exclusive worldwide license to
develop and commercialize BTI-322 and any products based on BTI-
322, with the exception of the use of BTI-322 in kits for
xenotransplantation or allotransplantation.  The Company has paid
BTI $4 million in license fees and research support through
December 31, 1996. The Company has assumed responsibility for
clinical testing and commercialization of any resulting products.

<PAGE>63

BTI will receive additional research support and milestone
payments which could total up to an additional $12 million, as
well as royalties on any sales of BTI-322, MEDI-500, MEDI-507 and
future generations of these products, if any.
     Other Agreements.  The Company has entered into research,
development and license agreements with various federal and
academic laboratories and other institutions to develop further
its products and technology and to perform clinical trials.
Under these agreements, the Company is obligated to provide
funding of approximately $14,530 and $406 in 1997 and 1998,
respectively.  The Company has also agreed to make milestone
payments in the aggregate amount of $3,020 on the occurrence of
certain events such as the granting by the FDA of a license for
product marketing in the United States for some of the product
candidates covered by these agreements.  In exchange for the
licensing rights for commercial development of proprietary
technology, the Company has agreed to pay royalties on sales
using such licensed technologies.

     Construction Agreements
     The Company entered into an engineering, procurement,
construction and validation services agreement with Fluor Daniel,
Inc. ("Fluor") in July 1996 to design and construct the Company's
manufacturing facility to be located on a 26 acre site in
Frederick, Maryland.  The $42.5 million contract price is being
paid over an 18 month period based on achievement of certain
milestones.  In addition, the contract provides for an early
completion bonus or liquidated damages if Fluor deviates from the
agreed upon schedule.  The facility will provide capacity for the
production of the Company's immune globulin products; cell

<PAGE>64

culture for other product candidates, including MEDI-493; filling
and packaging; warehousing; laboratories and administration.

     Manufacturing, Supply and Purchase Agreements
     The Company has entered into manufacturing, supply and
purchase agreements in order to provide production capability for
CytoGam and RespiGam, and to provide a supply of human plasma for
production of both products.  No assurances can be given that an
adequate supply of plasma will be available from the Company's
suppliers.  Human plasma for CytoGam and RespiGam is converted to
an intermediate raw material (Fraction II+III paste) under a
supply agreement.  This intermediate material is then supplied to
the manufacturer of the bulk product. The Company has an informal
arrangement with the bulk manufacturer for planned production
through June 1997 for $5,141, subject to production level
adjustments.  If the bulk manufacturer, which holds the sole
product and establishment licenses from the FDA for the
manufacture of CytoGam and RespiGam, is unable to satisfy the
Company's requirements for both products on a timely basis or is
prevented for any reason from manufacturing CytoGam and RespiGam,
the Company may be unable to secure an alternative manufacturer
without undue and materially adverse operational disruption and
increased cost.  The Company also has an agreement with Connaught
to fill and package the Company's immune globulin products
through 1998.

13.  PENSION PLAN
     The Company has a defined contribution 401(k) pension plan
available to all full time employees.  Employee contributions are
voluntary and are determined on an individual basis subject to

<PAGE>65

the maximum allowable under federal tax regulations. Participants
are always fully vested in their contributions.  There have been
no employer contributions under the plan.

<PAGE>66

Report of Independent Accountants
To the Board of Directors and Shareholders MedImmune, Inc.
     We have audited the accompanying balance sheets of
MedImmune, Inc. (the Company) as of December 31, 1996 and 1995,
and the related statements of operations, shareholders' equity
and cash flows and financial statement schedule for each of the
three years in the period ended December 31, 1996.  These
financial statements are the responsibility of the Company's
management.  Our responsibility is to express an opinion on these
financial statements and financial statement schedule based on
our audits.
     We conducted our audits in accordance with generally
accepted auditing standards.  Those standards require that we
plan and perform the audit to obtain reasonable assurance about
whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial
statements.  An audit also includes assessing the accounting
principles used and significant estimates made by management, as
well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our
opinion.
     In our opinion, the financial statements referred to above
present fairly, in all material respects, the financial position
of the Company as of December 31, 1996 and 1995, and the results
of its operations and its cash flows for each of the three years
in the period ended December 31, 1996 in conformity with
generally accepted accounting principles.  In addition, in our
opinion  the financial statement schedule referred to above, when

<PAGE>67

considered in relation to the basic financial statements taken as
a whole, presents fairly, in all material respects, the
information required to be included therein.

                                   COOPERS & LYBRAND L.L.P.
Rockville, Maryland
February 6, 1997


<PAGE>68

Report of Management

     The management of the Company is responsible for the
preparation of the financial statements and related financial
information included in this annual report.  The statements were
prepared in conformity with generally accepted accounting
principles, and accordingly, include amounts that are based on
informed estimates and judgments.
     Management maintains a system of internal controls to
provide reasonable assurance that assets are safeguarded and that
transactions are properly authorized and accurately recorded.
The concept of reasonable assurance is based on the recognition
that there are inherent limitations in all systems of internal
accounting control and that the costs of such systems should not
exceed the benefits expected to be derived. The Company
continually reviews and modifies these systems, where
appropriate, to maintain such assurance.  The system of internal
controls includes careful selection, training and development of
operating and financial personnel, well defined organizational
responsibilities and communication of Company policies and
procedures throughout the organization.
     The selection of the Company's independent accountants,
Coopers & Lybrand L.L.P., has been approved by the Board of
Directors and ratified by the shareholders.  The Audit Committee
of the Board of Directors, composed solely of outside directors,
meets periodically with the Company's independent accountants and
management to review the financial statements and related
information and to confirm that they are properly discharging
their responsibilities.  In addition, the independent accountants
and the Company's legal counsel meet with the Audit Committee,
without the presence of management, to discuss their findings and

<PAGE>69

their observations on other relevant matters.  Recommendations
made by Coopers & Lybrand L.L.P. are considered and appropriate
action is taken to respond to these recommendations.
                                 
                                 
                                 
Wayne T. Hockmeyer, Ph.D.        David M. Mott
Chairman and Chief Executive     President and Chief Operating
Officer                          Officer
                                 


Lawrence C. Hoff
Chairman of the Audit Committee



     ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS
             ON ACCOUNTING AND FINANCIAL DISCLOSURE


Not applicable.

                            PART III
 ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF MEDIMMUNE, INC.

     Information with respect to directors is included in the
Company's Proxy Statement to be filed pursuant to Regulation 14A
(the "Proxy Statement") under the caption "Election of
Directors," and such information is incorporated herein by
reference.  Set forth in Part I, Item 1, are the names and ages
(as of February 6, 1997), the positions and offices held by, and
a brief account of the business experience during the past five
years of each executive officer.

<PAGE>70

     All directors hold office until the next annual meeting of
shareholders and until their successors are elected and
qualified.  Officers are elected to serve, subject to the
discretion of the Board of Directors, until their successors are
appointed.

                ITEM 11.  EXECUTIVE COMPENSATION

     The section entitled "Executive Compensation" and the
information set forth under the caption "Election of Directors-
Director Compensation" included in the Proxy Statement are
incorporated herein by reference.
                                
                                
  ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND
                           MANAGEMENT

     The common stock information in the section entitled
"Principal Shareholders" of the Proxy Statement is incorporated
herein by reference.


    ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

      The  section entitled "Certain Transactions" of  the  Proxy
Statement is incorporated herein by reference.
                                
<PAGE>71

PART IV
 ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULE AND REPORTS ON
                            FORM 8-K
                                
     The following documents or the portions thereof indicated
are filed as a part of this report.

a)   Documents filed as part of the Report

1.   Financial Statements and Supplemental Data

          a.   Balance Sheets at December 31, 1996 and 1995
          
          b.   Statements of Operations for the years ended
               December 31, 1996, 1995 and 1994
          
          c.   Statements of Cash Flows for the years ended
               December 31, 1996, 1995 and 1994
          
          d.   Statements of Shareholders' Equity for the years
               ended December 31, 1996, 1995 and 1994
          
          e.   Notes to Financial Statement
          
          f.   Report of Independent Accountants
          
          g.   Report of Management

          
     2.   Supplemental Financial Statement Schedule

               Schedule I - Valuation and Qualifying Accounts Page S-1

b)   Reports on Form 8-K
     Date Filed      Event Reported
     10/4/96         MedImmune Reports 63 Percent Increase in
                     Product Sales
                     
     11/22/96        MedImmune Promotes William I. Braden to Vice
                     President, Engineering, Facilities and
                     Validation; MedImmune Commences Phase 3
                     Trial to Evaluate Respiratory Syncytial
                     Virus Monoclonal Antibody; MedImmune
                     appoints former Chiron Executive to Vice
                     President of Business Development
                     
     11/25/96        Complete H. Pylori Genome Sequence Licensed
                     to Oravax and Pasteur Merieux Connaught in
                     Exclusive Agreement with MedImmune and Human
                     Genome Sciences for Development of Novel
                     Vaccines
                     
     12/11/96        MedImmune Files IND to Begin Human Clinical
                     Trials for First Preventative Human
                     Papillomavirus Vaccine Candidate
                     
     12/17/96        MedImmune Announces Second U. S. Patent
                     Issued for RespiGam; MedImmune Completes
                     Patient Enrollment in Phase 3 Trial of
                     Monoclonal Antibody for Respiratory
                     Syncytial Virus
                     
     12/18//96       MedImmune and Biotransplant Begin Phase 2
                     Trial Evaluating BTI-322 in Treatment of
                     Graft-versus-Host Disease
                     

C)   ITEM 601 EXHIBITS

     Those exhibits required to be filed by Item 601 of Regulation S-K
     are listed in the Exhibit Index immediately preceding the
     exhibits filed herewith and such listing is incorporated by
     reference.



<PAGE>73

                               SIGNATURES


     Pursuant to the requirements of Section 13 or 15(d) of the
Securities Exchange Act of 1934, the registrant has duly caused this
report to be signed on its behalf by the undersigned, thereunto duly
authorized.


                                MEDIMMUNE, INC.

Date:  March 27, 1997                By:  Wayne T. Hockmeyer
                                     Chairman and
                                     Chief Executive Officer

     Pursuant to the requirements of the Securities Exchange Act of
1934, this report has been signed below by the following persons in the
capacities and on the dates indicated.


Date: March 27, 1997                 Wayne T. Hockmeyer
                                     Chairman and
                                     Chief Executive Officer
                                     (Principal executive officer)

Date:  March 27, 1997                David M. Mott
                                     President and Chief
                                     Operating Officer (Principal
                                     financial and accounting officer)

Date:  March 27, 1997                M. James Barrett, Director


Date:  March 27, 1997                James H. Cavanaugh, Director


Date:  March 27, 1997                Gordon S. Macklin , Director


Date:  March 27, 1997                Franklin H. Top, Jr., Director

Date:  March 27, 1997                Barbara Hackman Franklin, Director


<PAGE>74

Schedule I
                             MedImmune, Inc.
                    Valuation and Qualifying Accounts
                             (in thousands)
<TABLE>                                                       
<S>                         <C>        <C>         <C>        <C>
                             Balance                              
                               at                             Balance
                            beginning                          at end
                                of                               of
       Description           period    Additions   Deductions  period
- --------------------------  ---------  ----------  ---------- -------
For the year ended                                                    
 December 31, 1996
 Trade and Contract                                                   
Receivables Allowance            $309      $2,136    ($1,020)   $1,425
 Trade Receivables Bad                                                
     Debt Reserve                  21         724          --      745
 Inventory Reserve                417         249       (658)        8
                               ------      ------      ------   ------
                                 $747      $3,125    ($1,694)   $2,178
                               ======      ======      ======   ======
                                                              
For the year ended                                                    
 December 31, 1995
 Trade and Contract                                                   
Receivables Allowance            $272        $498      ($461)     $309
 Trade Receivables Bad                                                
     Debt Reserve                  16           5          --       21
  Inventory Reserve                --         500        (83)      417
                               ------      ------      ------   ------
                                 $288      $1,003      ($544)     $747
                               ======      ======      ======   ======
                                                              
For the year ended                                                    
 December 31, 1994
 Trade and Contract                                                   
Receivables Allowance            $344        $330      ($402)     $272
 Trade Receivables Bad                                                
     Debt Reserve                  --          16          --       16
 Inventory Reserve                 --          --          --       --
                               ------      ------      ------   ------
                                 $344        $346      ($402)     $288
                               ======      ======      ======   ======
</TABLE>                                                              
                                   S-1


c)        Item 601 Exhibits

 3.1(4)     Restated Certificate of Incorporation, dated May 14, 1991
 3.2(3)     By-Laws, as amended
10.1(1)(3)  License Agreement dated November 15, 1990 between the
            Company and Merck & Co., Inc. ("Merck")
10.2(3)     Plasma Supply Agreement dated May 31, 1990 between the
            Company and Plasma Alliance, Inc.
10.3(3)     Termination Agreement dated June 29, 1990 between the
            Company and Pediatric Pharmaceuticals, Inc. ("PPI")
            (formerly MedImmune, Inc.)
10.4(3)     RSV Research Agreement dated August 1, 1989 between the
            Company, PPI and the Massachusetts Health Research
            Institute, Inc. ("MHRI")
10.5(3)     RSV License Agreement dated August 1, 1989 between the
            Company, PPI and MHRI
10.6(3)     RSV Supply Agreement dated August 1, 1989 between the
            Company, PPI, MHRI and the Massachusetts Public Health
            Biologic Laboratory ("MPHBL")
10.7(3)     CMV License Agreement dated April 23, 1990 between the
            Company and MHRI
10.8(3)     First Amendment to CMV License Agreement dated May 3, 1991
            between the Company and MHRI
10.9(3)     CMV Research Agreement dated April 23, 1990 between the
            Company, MHRI and MPHBL
10.10(3)    License Agreement dated November 8, 1989 between the
            Company, PPI, and the Henry M. Jackson Foundation for the
            Advancement of Military Medicine ("HMJ")
10.11(3)    Research Agreement dated November 8, 1989 between the
            Company, PPI and HMJ
10.12(1)(3) Research and License Agreement dated April 1, 1990 between
            the Company and New York University
10.13(1)(3) Research and License Agreement dated January 2, 1991
            between the Company and the University of Pittsburgh
10.14(3)    Patent License Agreement between the Company and the
            National Institutes of Health regarding parvovirus
10.15(3)    License Agreement dated September 1, 1988 between the
            Company and Albany   Medical College of Union College
10.16(3)    License Agreement dated July 5, 1989 between the Company,
            Albert Einstein College of Medicine of Yeshiva University,
            The Whitehead Institute and Stanford University
10.17(3)    License Agreement dated July 1, 1989 between the Company
            and the National Technical Information Service ("NTIS")
10.18(3)    License Agreement dated September 1, 1989 between the
            Company and NTIS
                                   E-1

10.19(5)    Form of Stock Option Agreement, as amended
10.20(3)    Convertible Preferred Stock and Warrant Purchase Agreement
            between HCV, Everest Trust and the Company dated January
            12, 1990 with form of Warrant
10.21(3)    Restated Stockholders' Agreement dated May 15, 1991
10.22(3)    Lease Agreement between Clopper Road Associates and the
            Company dated February 14, 1991
10.23(7)    1991 Stock Option Plan
10.24(3)    Sublease between the Company and Pharmavene, Inc.
10.25(4)    Agreement between New England Deaconess Hospital
            Corporation and the Company, dated as of August 1, 1991
10.26(1)(4) Research Collaboration Agreement between Merck and the
            Company effective as of November 27, 1991
10.27(1)(4) Co-promotion Agreement between Merck and the Company
            effective as of November 27, 1991
10.28(1)(4) License Agreement between Merck and the Company effective
            as of November 27, 1991
10.29(1)(5) Letter Agreement between Merck and the Company, dated
            January 26, 1993
10.30(1)(5) Termination, Purchase and Royalty Agreement between CLI and
            the Company, dated December 24, 1992
10.30.1(1)(12)Amendment to Termination, Purchase and Royalty
            Agreement between Connaught Technology Corporation and
            MedImmune, Inc. dated December 31, 1995
10.31(1)(5) Research and License Agreement between Cell Genesys, Inc.
            and the Company, dated April 29, 1992
10.31(a)(5) Unredacted pages 2-5 of Exhibit 10.31
10.32(5)    Form of 1993 Non-Employee Director Stock Option Plan
10.33(1)(8) Sponsored Research and License Agreement between Georgetown
            University and the Company dated February 25, 1993
10.34(1)(8) License Agreement between Roche Diagnostic Systems, Inc.
            and the Company dated March 8, 1993
10.35(1)(8) Pip/Tazo Co-Promotion Agreement between American Cyanamid
            Company and the Company dated November 8, 1993
10.35.1(12) Agreement dated October 26, 1995 between American Cyanamid
            Company and the Company
10.36(1)(8) RSVIG Co-Development and Co-Promotion Agreement between
            American Cyanamid Company and the Company dated November 8,
            1993
10.36.1(12) Agreement dated October 26, 1995 between American Cyanamid
            Company and the Company
10.37(1)(8) RSV MAB Co-Development and Co-Promotion Agreement between
            American Cyanamid Company and the Company dated November 8,
            1993

                                   E-2

10.37.1(12) Agreement dated October 26, 1995 between American Cyanamid
            Company and the Company
10.38(1)(8) RSV Vaccine Co-Development and Co-Promotion Agreement
            between American Cyanamid Company and the Company dated
            November 8, 1993
10.38.1(12) Agreement dated October 26, 1995 between American Cyanamid
            Company and the Company
10.39(1)(10)Fraction II + III Paste Supply Agreement between Baxter
            Healthcare Corporation and the Company dated September 1,
            1994
10.40(11)   Employment Agreement between David P. Wright and the
            Company dated January 2, 1995
10.41(11)   Employment Agreement between Bogdan Dziurzynski and the
            Company dated February 1, 1995
10.42(11)   Employment Agreement between Wayne T. Hockmeyer and the
            Company dated February 1, 1995
10.43(11)   Employment Agreement between David M. Mott and the Company
            dated February 1, 1995
10.44(11)   Employment Agreement between Franklin H. Top, Jr. and the
            Company dated February 1, 1995
10.45(11)   Employment Agreement between James F. Young and the Company
            dated February 1, 1995
10.46(1)(11)License Agreement between Symbicom AB and the Company dated
            May 20, 1994
10.47(1)(11)License Agreement between the University of Kentucky
            Research Foundation and the Company effective  June 10,
            1994
10.48(1)(11)Research and Development Agreement between the University
            of Kentucky Research Foundation and the Company effective
            June 10, 1994
10.49(1)(11)Research and License Agreement between Washington
            University and the Company effective July 1, 1994
10.50(1)(11)Research and License Agreement between Washington
            University and the Company effective  March 1, 1995
10.51(1)(9) License Agreement between Baxter Healthcare Corporation and
            MedImmune, Inc. effective June 2, 1995
10.52(1)(9) Stock Purchase Agreement between Baxter Healthcare
            Corporation and MedImmune, Inc. dated June 22, 1995
10.53(1)(10) Alliance Agreement between BioTransplant, Inc. and
            MedImmune, Inc. dated October 2, 1995
10.54(12)   Stock Purchase Agreement dated October 25, 1995 between
            MedImmune, Inc. And American Home Products
10.55(2)(12)Collaboration and License Agreement dated as of July 27,
            1995 between MedImmune, Inc. And Human Genome Sciences,
            Inc.
                                   E-3

10.56(12)   Stipulation of Settlement in reference to MedImmune, Inc.
            Securities Litigation, Civil Action No. PJM93-3980
10.57(2)(13)Plasma Supply Agreement dated effective as of February 8,
            1996, by and between DCI Management Group, Inc. and
            MedImmune, Inc.
10.58(2)(13)License and Research Support Agreement dated as of April
            16, 1996, between The Rockefeller University and MedImmune,
            Inc.
10.59       First Amendment of Lease Between Clopper Road Associates
            and MedImmune, Inc. dated June 8, 1993.
10.60       Second Amendment of Lease Between Clopper Road Associates
            and MedImmune, Inc. dated June 30, 1993.
10.61       Third Amendment of Lease between Clopper Road Associates
            and MedImmune, Inc. effective as of January 1, 1995.
10.62       Fourth Amendment of Lease between Clopper Road Associates
            and MedImmune, Inc. dated October 3, 1996.
10.63       Fifth Amendment of Lease between Clopper Road Associates
            and MedImmune, Inc. dated October 3, 1996.
10.64(2)    Engineering, Procurement, Construction and Validation
            Services Agreement between MedImmune, Inc. and Fluor
            Daniel, Inc. effective as of July 31, 1996.
10.65(2)    Research and License Agreement between OraVax Merieux Co.
            and MedImmune, Inc. effective as of November 1, 1996.
23.1        Consent of Independent Accountants
______________
(1)         Confidential treatment has been granted as to certain
            portions by the SEC. The copy filed as an exhibit omits the
            information subject to the confidentiality grant.
(2)         Confidential treatment has been requested as to certain
            portions.  The copy filed as an exhibit omits the
            information subject to the confidentiality request.
(3)         Incorporated by reference to exhibit filed in connection
            with the Company's Registration Statement No. 33-39579.
(4)         Incorporated by reference to exhibit filed in connection
            with the Company's Registration Statement No. 33-43816.
(5)         Incorporated by reference to exhibit filed in connection
            with the Company's Annual Report on Form 10-K for the year
            ended December 31, 1992.
(6)         Incorporated by reference to exhibit filed in connection
            with the Company's Annual Report on Form 10-K for the year
            ended December 31, 1991.
(7)         Incorporated by reference to exhibit filed in connection
            with the Company's Registration Statement No. 33-46165.


                                   E-4

(8)         Incorporated by reference to exhibit filed in connection
            with the Company's Annual Report on Form 10-K for the year
            ended December 31, 1993.
(9)         Incorporated by reference to exhibit filed in connection
            with the Company's Quarterly Report on Form 10-Q for the
            quarter ended June 30, 1995.
(10)        Incorporated by reference to exhibit filed in connection
            with the Company's Quarterly Report on Form 10-Q for the
            quarter ended September 30, 1995.
(11)        Incorporated by reference to exhibit filed with the
            Company's Annual Report on Form 10-K for December 31, 1994.
(12)        Incorporated by reference to exhibit filed with the
            Company's Annual Report on Form 10-K for December 31, 1995.
(13)        Incorporated by reference to exhibit filed with the
            Company's Quarterly Report on Form 10-Q for the Quarter
            ended June 30, 1996.



























                                   E-5


                                                    EXHIBIT 10.59

                                

                                

                    FIRST AMENDMENT OF LEASE

                             BETWEEN

                     CLOPPER ROAD ASSOCIATES

                               AND

                         MEDIMMUNE, INC.





                       DATE:  June 8, 1993

                        TABLE OF CONTENTS



Explanatory Statement                                  Page No.

1.   Effective Date of First Amendment                           1



2.   Capitalized Terms                                           1

3.   Expansion Space                                             1

4.   Shell Construction of Additional
     Expansion Space                                             1

     a.   Shell Plans; Filing for Building Permit                1

     b.   Shell Completion                                       1

     c.   Landlord's Shell Warranty                              2

5.  Construction of Initial Improvements
    to Expansion Space                                           2

     a.   Plans and Specifications; Long
          Lead-Time Items                                        2

     b.   [Intentionally Deleted]                                2

     c.   Third Party as Contractor                              2
          (i)  Approval and Performance                          2
          (ii) Insurance                                         3
          (iii)Manekin's observation                             3

6.   Expansion Space Contribution                                3

7.  The Expansion Space Loan                                     3

8.   Construction Provisions of Original Leased
     Premises Not Applicable to Expansion Space                  4

9.  Term of Expansion Space Lease                                4

    a.   Expansion Space Commencement Date                       5

    b.   Early Occupancy of Portion of Existing
         Expansion Space                                         5
    
    c.   Possession of Expansion Space                           5

    d.   Acceptance of Expansion Space                           5

10. Cancellation Options                                         5

11. Basic Annual Rent for the Expansion Space                    6

    a.  Commencement of Payment of Basic
        Annual Rent for the Expansion Space                      6
    
    b.  Amount of Basin Annual Rent
        for Additional Expansion Space                           7
    
    c.  Amount of Basin Annual Rent for
        Existing Expansion Space                                 7
    
    d.  Payment of Basic Annual Rent
        for Expansion Space                                      7
    
    e.  Security Deposit                                         7
    
12.     Adjustments to Square Footages, Percentages
        and Addresses                                            9

13.     Environmental Assurances                                 10

14.     Assignment/Subletting                                    11

15.     Notices                                                  11

16.     Parking                                                  11

17.     Tenant Financing of Equipment, Fixtures, Etc.            11

18.     Right of First Offer                                     11

19.     Tenant Authorization                                     13

20.     Lease as Amended                                         13

21.     Tenant Reaffirmation of Lease                            13



EXHIBIT A      Description of Expansion Space

EXHIBIT B      Description of Shell Plans

EXHIBIT C      Description of Expansion Space Plans

EXHIBIT D      Shell Construction Costs

EXHIBIT E      List of Tenants With Superior Rights to Tenant to
         Lease Available Space in First Phase of Project
                    FIRST AMENDMENT OF LEASE



     THIS FIRST AMENDMENT OF LEASE (this "First Amendment") is
made this 8th day of June, 1993 by and between CLOPPER ROAD
ASSOCIATES, a Maryland general partnership ("LANDLORD") and
MEDIMMUNE, INC., a Delaware corporation ("TENANT").

                      EXPLANATORY STATEMENT

    A.    Landlord and Tenant entered into a Lease dated February
14, 1991 (the "Lease") for a portion of Building D (the
"Building") located at 35 West Watkins Mill Road in the
Bennington Corporate Center, which portion contains 40,843 square
feet (the "Original Leased Premises").
    
    B .   Landlord and Tenant now desire to expand the Building,
increase the square footage of the Original Leased Premises,
adjust the rent payable therefor, and make certain other changes
to the Lease, all as more specifically set forth below.
    
    NOW, THEREFORE, in consideration of the Explanatory
Statement, which shall be deemed a substantive part of this First
Amendment, the covenants of the parties herein and in the Lease,
and other good and valuable consideration, the receipt and
adequacy of which are hereby acknowledged, Landlord and Tenant
hereby agree as follows:
    
          1.   Effective Date of First Amendment.  From and after
the date of this First Amendment, the Lease shall be amended as
set forth below.
    
          2.   Capitalized Terms.   All capitalized terms in this
First Amendment shall have the same meanings as those in the
Lease, unless specifically set forth otherwise herein.
    
          3. Expansion Space.  Landlord hereby leases to Tenant,
and Tenant hereby leases from Landlord, in addition to the
Original Leased Premises, approximately Nine Thousand Seven
Hundred Ninety Two (9,792) rentable square feet of space,
consisting of Seven Thousand Five Hundred Fifty-Two (7,552)
existing square feet in the Building (the "Existing Expansion
Space"), and Two Thousand Two Hundred Forty (2,240) rentable
square feet of space which shall be added to the Building (the
"Additional Expansion Space") (collectively, the "Existing
Expansion Space and the Additional Expansion Space shall be
deemed the "Expansion Space"). The Expansion Space is shown more
particularly on Exhibit A attached hereto and made a part hereof.
    
     4.   Shell Construction of Additional Expansion Space.
    
          a.   Shell Plans; Filing for Building Permit. Landlord
shall cause the "Shell" for the Additional Expansion Space (the
"Shell Construction") to be constructed. Landlord has initially
designated as the general contractor to cause the Shell
construction, Riparius Construction, Inc. ("Riparius").  Landlord
shall provide all work, labor and materials in support of the
Shell construction in accordance with the plans and
specifications for the Shell (the "Shell Plans") , which Shell
Plans have been approved and initialed by the parties.  The Shell
Plans are described more fully on Exhibit B attached hereto and
incorporated herein by reference.
    
          Landlord shall file its application with Montgomery
County for the Shell Building Permit within five (5) days of the
execution and delivery of this Lease.
    
          b.  Shell Completion.  Landlord shall complete the
Shell Construction so that the Shell is ready for construction of
the Initial Improvements to the Additional Expansion Space (as
defined below) no later than five (5) months after the date that
Montgomery County has issued a building permit for the Shell (the
"Shell Completion Date"). The Shell Completion Date shall be
pushed back one (1) day for each day that Shell Construction is
delayed due to (i) Tenant-generated change orders to the Shell
Plans; (ii) delays of any nature whatsoever caused by Tenant; and
(iii) Tenant negligence or willful misconduct.
    
    Promptly upon Landlord's Completion of the Shell
Construction, Tenant's architect shall certify to Tenant that the
Shell Construction has been completed in accordance with the
Shell Plans.
    
          c.   Landlord's Shell Warranty.  At the termination of
Landlord's Shell Warranty Period (as defined below), or upon the
transfer of fee simple title to the Property to Landlord's lender
(the "Permanent Lender") pursuant to a foreclosure of Landlord's
loan, a conveyance in lieu of foreclosure, or otherwise, Landlord
hereby agrees to and will assign to Tenant, to the extent they
are assignable, any and all written warranties and guarantees
from Landlord's contractors, subcontractors and suppliers of any
materials and labor to the Shell, for that portion, if any, of
the Lease Term that such warranties and guarantees are in effect.
Landlord hereby warrants ("Landlord's Shell Warranty") to Tenant
that Landlord will be responsible for a period ("Landlord's Shell
Warranty Period") of one (1) year from the Shell Completion Date
to repair or to have repaired all defects in the Shell
Construction, to the extent such defects are not caused by the
negligence of Tenant or any of its agents, servants, employees or
contractors (in which event such defects will be repaired at
Tenant's sole cost).  To the extent that Landlord is obligated to
make repairs pursuant to Landlord's Shell Warranty, Tenant will
be relieved during Landlord's Shell Warranty Period of the
obligations imposed upon it pursuant to this Lease to make or pay
for such repairs to the Shell.  Tenant agrees to and will give
Landlord prompt notice of the need for any such repairs.
    
    
     5.  Construction of Initial Improvements to Expansion Space.
    
          a. Plans and Specifications; Long Lead-Time Items.
Tenant has caused the preparation of plans and specifications
(the "Expansions Space Plans") for the Initial Improvements with
respect to the Existing Expansion Space (the "Existing Expansion
Space Initial improvements") and for the Initial Improvements
with respect to the Additional Expansion Space (the "Additional
Expansion Space Initial Improvements") (the Existing Expansion
Space Initial Improvements and the Additional Expansion Space
Initial Improvements being collectively referred to as the
"Expansion Space Initial Improvements"). The Expansion Space
Plans have been approved and initialed by the parties.  The
Expansion Space Plans are described more fully on Exhibit C
attached hereto and incorporated herein by reference.
    
          b.   [Intentionally Deleted.)
    
          c.   Third Party as Contractor.
    
               (i)  Approval and Performance.  Tenant has
initially selected Riparius (the "Third Party Contractor") to
construct the Initial Improvements to the Expansion Space.
Landlord hereby approves of such selection.  Tenant will not
change the Third Party Contractor from Riparius to another party
without the prior written consent of Landlord, which consent
shall not be unreasonably withheld or delayed. The Third Party
Contractor shall perform its work in strict compliance with all
laws rules, regulations, orders, codes and other requirements of
all governmental and quasi-governmental authorities having
jurisdiction with respect to the Expansion Space and/or the
performance of the Initial Improvements, and shall comply with
all of Landlord's reasonable rules and regulations provided to
the Third Party Contractor.
    
                 (ii)  Insurance.  In addition, the Third
Party Contractor shall obtain Builder's Risk insurance naming
Landlord, Tenant and Manekin Corporation as additional insureds
and public liability insurance with limits of $1,000,000/
$2,000,000 for the construction of the initial improvements, and
proof that it maintains a policy of Workmen's Compensation
Insurance in accordance with applicable law.  No later than the
date of commencement of construction of the Initial Improvements
to the Expansion Space, the Third Party Contractor shall provide
original insurance certificates to Landlord evidencing all such
insurance policies.
    
                    (iii) Manekin's Observation.  Manekin, on
behalf of Landlord, shall have the right to observe the Third
Party Contractor's work on the Initial Improvements to the
Expansion Space, and Tenant shall pay Manekin a fee (the "Fee")
equal to the lesser of (i) all of Manekin's out-of-pocket costs
for such observation, including, without limitation, the wages,
salaries or other compensation and any taxes, insurance or
benefits of its personnel performing such observation; and (ii)
three percent (3%) of the Existing Expansion Space Contribution
(as defined below), which three percent equals Six Thousand one
Hundred Seventeen Dollars and Twelve Cents ($6,117.12). Tenant
shall pay this Fee thirty (30) days after receipt of Landlord's
invoice therefor, together with all applicable supporting
documentation.
    
          G.   Expansion Space Contribution.  Landlord shall
contribute to Tenant Twenty Seven Dollars ($27.00) per rentable
square foot of the Existing Expansion Space (as such square
footage may vary pursuant to Paragraph 12(c) below) (the
"Expansion Space contribution"), as an allowance for construction
of the Initial Improvements to the Existing Expansion Space.
Subject to Paragraph 7 below, Tenant shall pay all costs of any
nature which exceed the Expansion Space Contribution for
construction of the Initial Improvements to the Expansion Space.
    
          Tenant shall send Landlord an invoice for each monthly
construction invoice Tenant must pay with respect to the Existing
Expansion Space Initial Improvements, and Landlord shall pay
Tenant one-half of each such invoice within thirty (30) days of
receipt thereof, until the Expansion Space Contribution has been
fully paid.
    
          Landlord's obligation to make the payments set forth
above in this Paragraph 6 shall be subject to (i) certification
by Tenant's architect that the applicable stage of completion has
been achieved, and (ii) the receipt by Landlord of (A) (i) with
reference to all draws other than the final draw, duly executed
releases of liens with respect to the work by the Third Party
Contractor; and (ii) with reference to the final draw, duly
executed releases of liens with respect to the work by the Third
Party Contractor and all subcontractors; and (B) a written draw
request on AIA Form G702 with respect to the work for which
payment is being requested.
    
    
    
          7.  The Expansion Space Loan.  Landlord shall loan
Tenant Fifty Dollars ($50.00) per rentable square foot of the
Additional Expansion Space, for a total of One Hundred Twelve
Thousand Dollars ($112,000.00) (the "Expansion Space Loan").  The
Expansion Space Loan shall be applied first to pay one hundred
percent of the invoices for the Shall Construction.  If the Shell
Construction costs are greater that the amount of the Expansion
Space Loan.  If the Shell Construction costs are less than the
Expansion Space Loan, the amount of the Expansion Space Loan in
excess of the Shell Construction costs shall be applied to the
costs of the Initial Improvements to the Existing Expansion
Space.
    
          There is attached hereto as Exhibit D and incorporated
herein by reference the categories of items constituting the
Shell Construction costs and the estimated costs within each such
category.  Within thirty (30) days after the Shell Completion
Date, Landlord shall provide to Tenant invoices substantiating
the full amount of the Shell Construction costs.  Within twenty
(20) days thereafter: (a) if the Shell Construction costs are
more than $112,000, Tenant shall pay Landlord in cash the entire
amount of such costs over $112,000; and (b) if the Shell
Construction costs are less than $112,000, Landlord shall add the
amount by which $112,000 exceeds the Shell Construction costs to
the Expansion Space Contribution, and Landlord and Tenant
promptly shall execute an amendment to the Lease as amended
hereby setting forth the new Expansion Space Contribution.
Landlord agrees that it will not allow or permit the total costs
attributable to any category set forth on Exhibit D to exceed the
estimated amount for such respective category as set forth on
Exhibit D without first obtaining the prior written consent of
the Tenant.
    
          Tenant shall repay the Expansion Space Loan to Landlord
at thirteen percent (13%) interest per year, over ten (10) years,
commencing on August 1, 1994 (the "Loan Repayment") which Loan
Repayment is incorporated into the Basic Annual Rent for the
Additional Expansion Space.  In the event that the Lease, as
amended hereby or hereafter, terminates early for any reason
whatsoever, Tenant shall repay to Landlord no later than the date
of such early termination the then-outstanding balance of the
Expansion Space Loan.
    
          Tenant shall have the option at any time during the
Lease Term, to prepay all or a portion of the then outstanding
balance of the Expansion Space Loan without any prepayment
penalty.  In the event that the Tenant prepays all of the then-
outstanding balance of the Expansion Space Loan, then and in such
event, there shall be a reduction in the Basic Annual Rent for
the Additional Expansion Space and in the monthly installments of
the Basic Annual Rent for the Additional Expansion Space.  In the
event that Tenant prepays a portion but not all of the then-
outstanding balance of the Expansion Space Loan, the Basic Annual
Rent for the Additional Expansion Space and the monthly
installments of such Basic Annual Rent shall not be reduced at
all, but shall remain the same as they were before any such
partial prepayment until the balance of the Expansion Space Loan
has been paid in full.  Upon the payment in full of the Expansion
Space Loan, the Basic Annual Rent shall be reduced by the amount
of $1,672.27 per month.
    
          For purposes of determining at any time the then unpaid
principal balance of the Expansion Space Loan, the same shall be
equal to (i) the then unpaid principal balance of a one Hundred
Twelve Thousand Dollar ($112.000.00) loan amortized at thirteen
percent (13%) interest per annum over one hundred twenty (120)
months with level equal monthly payments of principal and
interest and with the first payment having been made on August 1,
1994; and (ii) less prepayments theretofore made; and (iii) plus
any adjustments to the extent that Basic Annual Rent for the
Additional Expansion Space has not been paid in accordance with
its terms.
    
          8.  Construction Provisions of Original Leased Premises
Not Applicable to Expansion Space.  Article I.B of the Lease
shall only apply to the Original Leased Premises, and shall not
apply to the Expansion Space except as specifically set forth in
this First Amendment.
    
          9.  Term of Expansion Space Lease.  The Expansion Space
Term will commence on the Expansion Space Commencement Date and
will end on the last day of the Leased Term.  From and after the
date of this First Amendment, the term "Leased Term" will include
the Expansion Space term.  Upon the occurrence of the Expansion
Space Commencement Date, Landlord and Tenant shall execute in
writing a statement setting forth the Expansion Space
Commencement Date.
    
               a.  Expansion Space Commencement Date.  The
Expansion Space Commencement Date shall be the date that Tenant
has obtained a temporary certificate of occupancy and all other
licenses and permits required with respect to construction-
related issues only, in order for Tenant to occupy the Expansion
Space.
               b.  Early Occupancy of Portion of Existing
Expansion Space.  Notwithstanding subsection 9 (a) above, Tenant
shall have the right to occupy approximately One Thousand Two
Hundred (1,200) rentable square feet of the Existing Expansion
Space (the "Early Occupancy Space") as shown in red on Exhibit A,
on the date (the "Early Occupancy Date") that (i) the Initial
improvements for such Early Occupancy Space have been completed
subject only to minor punch list items; and (ii) a temporary
certificate of occupancy has been issued, together with all other
licenses and permits required with respect to construction-
related issues only, so that Tenant may occupy the Early
Occupancy Space. on or before the Early Occupancy Date, Tenant
shall have provided Landlord with all certificates of insurance
as required under the Lease with respect to the Early Occupancy
Space, and all aspects of the Lease as amended hereby, except for
the Basic Annual and Additional Rent provisions, shall apply to
Tenant's occupancy of the Early Occupancy Space.
    
               c.  Possession of Expansion Space.  This First
Amendment will remain fully effective and Tenant may not cancel
or rescind it due to late possession, regardless of when
possession is actually delivered.  Moreover, in no event will
Landlord be liable to Tenant for damages, if any, sustained by
Tenant as a result of Landlord's delay in delivering the
Expansion Space.
    
               d.  Acceptance of Expansion Space.  Upon
Landlord's delivery of possession of the Expansion Space to
Tenant, Tenant will be deemed to have accepted the Expansion
Space subject to Landlord's duties otherwise provided herein.
    
    
          10.  Cancellation options.
    
               a.  Paragraph II.B(l) of the Lease shall apply to
the Expansion Space but shall be amended by (w) adding Ninety
Thousand Six Hundred Twenty-Four Dollars ($90,624.00) to each of
the First Fee and the Second Fee defined in the first paragraph
thereof so that the total First Fee shall equal Two Hundred
Fifteen Thousand Six Hundred Twenty-Four Dollars ($215,624.00)
and the total Second Fee shall equal Two Hundred Fifteen Thousand
Six Hundred Twenty-Four Dollars ($215,624.00); (x) adding the
underlined phrase to the end of subsection (b) (ii) of the first
paragraph thereof so that subsection (b)(ii) shall read "(ii) the
then-outstanding balance of the Loan Amount and the Expansion
Space Loan ..."; (y) substituting the numbers in the mathematical
example in the third to the last sentence in the first paragraph
thereof as follows: "... such that each Fee will equal One
Hundred Seventy-Four Thousand Six Hundred Twenty-Four Dollars
($174,624.00) ($215,624.00 - $41,000.00 = $174,624.00)."; and (z)
adding the underlined language in the last sentence in the first
paragraph thereof as follows: "... the then-outstanding balance
of the Loan Amount and the Expansion Space Loan upon the Lease
termination hereunder."

          The second paragraph of Paragraph II.B(1) of the Lease
shall be amended by adding in the seventh line thereof the
following underlined language:  "...shall set forth through the
Acquisition Termination Date the outstanding balance of the Loan
Amount and the Expansion Space Loan..."


               b.   Paragraph II.B(2) of the Lease shall apply to
the Expansion Space but shall be amended by (x) adding Ninety
Thousand Six Hundred Twenty-Four Dollars ($90,624.00) to each of
the First Five-Year Fee and the Second Five-Year Fee defined in
the first paragraph thereof so that the total First Five-Year Fee
shall equal Two Hundred Fifteen Thousand Six hundred Twenty-Four
Dollars ($215,624.00) and the total.  Second Five-Year Fee shall
equal Two hundred Fifteen Thousand Six Hundred Twenty-Four
Dollars ($215,624.00); and (y) adding the underlined phrase to
the end of subsection (b) of the first paragraph thereof so that
subsection (b) shall read "(b) the then-outstanding balance of
the Loan Amount at-id the Expansion Space Loan".
    
    The second paragraph of Paragraph II.B(2) of the Lease shall
be amended by adding in the seventh line thereof the following
underlined language: " ... which Five-Year Termination Rent
Statement shall set forth through the Five-Year Termination Date
the outstanding balance of the Loan Amount and the Expansion
Space Loan... "
    
          c.   Paragraph II.B(3) of the Lease shall apply to
the Expansion Space but shall be amended by adding the underlined
language to the end of the second sentence of the first paragraph
thereof as follows:  "If Tenant exercises its right to terminate
this Lease under this Paragraph II.B.(3), Tenant shall pay by
certified or bank cashier's check made Payable to Landlord, or at
Landlord's option by wire transfer of immediately available funds
to Landlord's account, at the time Tenant gives Landlord notice
hereunder, a fee (the "First Ten-Year Fee") of Twenty-Two
Thousand Six Hundred Fifty-Six Dollars ($22,656.00). In addition,
Tenant shall pay to Landlord in the manner set forth in Paragraph
II.B(2) on or before the expiration of the one hundred nineteenth
(119th) month of the Lease Term, both (a) a second fee (the
"Second Ten-Year Feel") (collectively, the First and Second Ten-
Year Fees shall be called the "Ten-Year Fees") of Twenty-Two
Thousand Six Hundred Fifty-Six Dollars ($22,656.00) and (b) the
then-outstanding balance of the Loan Amount and the Expansion
Space Loan."
    
          The second paragraph of Paragraph II.B(3) of the Lease
shall be amended by adding in the seventh line thereof the
following underlined language: "... which Ten-Year Termination
Rent Statement shall set forth through the Ten-Year Termination
Date the outstanding balance of the Loan Amount and the Expansion
Space Loan..."
    
    
    
          In addition, the second paragraph of Paragraph II.B(3)
shall be amended by adding in the second sentence thereof the
following underlined language: "Notwithstanding anything set
forth above in this Paragraph - II.B(3), the termination of the
Lease pursuant to this Paragraph shall not be effective until
Landlord has received from Tenant all Ten-Year Fees and the
amount set forth in the Ten-Year Termination Rent Statement;
provided, however, that if Landlord fails to provide the Ten-Year
Termination Rent Statement to Tenant as and when required
hereunder, the termination of the Lease pursuant to this
Paragraph shall nevertheless be effective on the Ten-Year
Termination Date; provided that in such event, Tenant has timely
paid the Ten-Year Fees to Landlord."
    
          Finally, the second paragraph of Paragraph II.B(3)
shall be amended by adding to the last sentence thereof the
following underlined language: "... Landlord shall have no
further right to make any claim for payment of any sums payable
by Tenant to landlord pursuant to this Lease other than the Fees
and the sums set forth ..."
    
          11.  Basic Annual Rent for the Expansion Space.
    
               a.  Commencement of Payments of Basic Annual Rent
for Expansion Space.  Basic Annual Rent on the Expansion Space
shall be paid by Tenant, commencing as follows:
    
                    (1) Tenant's payment of Basic Annual Rent for
the Additional Expansion Space shall commence on August 1, 1994,
and Tenant's payment of Basic Annual Rent for the Existing
Expansion Space shall commence on September 1, 1994. These
payments shall commence on the dates set forth herein regardless
of when the Expansion Space Commencement Date occurs.
    
               b.   Amount of Basic Annual Rent for Additional
    Expansion Space.  Basic Annual Rent for the Additional
Expansion space, including, but not limited to, amortization of
the Expansion Space Loan, shall equal Twenty-Seven Thousand Three
Hundred Fifty Dollars and Forty Cents ($27,350.40) per annum,
payable in equal monthly installments of Two Thousand Two Hundred
Seventy-Nine Dollars and Twenty Cents ($2,279.20). Payment of the
first monthly installment hereunder shall commence on August 1,
1994 and shall continue for one hundred twenty (120) months of
the Lease Term; provided that if payment commences on a date that
is not the first day of a month, then payment shall continue for
one hundred twenty (120) months plus the partial first month in
which payment commences.
    
               Commencing on the first day of the one hundred
twenty-first (121st) month after payment has commenced under
Paragraph 11(b) above, Tenant shall pay a reduced Basic Annual
Rent for the Additional Expansion Space equal to Four Dollars and
Forty Cents ($4.40) per square foot of the Additional Expansion
Space, for a total of Nine Thousand Eight Hundred Fifty-Six
Dollars ($9,856.00) per annum, in equal monthly installments of
Eight Hundred Twenty-One Dollars and Thirty-Three Cents $821.33),
for the remainder of the Initial Lease Term.
    
               c.   Amount of Basic Annual Rent for Existing
Expansion Space.  Basic Annual Rent for the Existing Expansion
Space, including, but not limited to, repayment of the Expansion
Space Contribution, shall equal One Hundred Thousand Three
Hundred Sixty-Six Dollars and Eight Cents ($100,366.08) per
annum, payable in equal monthly installments of Eight Thousand
Three Hundred Sixty-Three Dollars and Eighty-Four Cents
($8,363.84), commencing oil September 1, 1994.  Such Basic Annual
Rent for the Existing Expansion Space shall be increased Three
and One-half Percent (3.5%) per annum, compounded annually, on
each anniversary of the commencement of payment hereunder.
    
          d.  Payment of Basic Annual Rent for Expansion
Space.  The above amounts of Basic Annual Rent for the Expansion
Space shall be paid at the time and in addition to the payment of
Basic Annual Rent for the Original Leased Premises, and otherwise
in the manner set forth in Article III.B of the Lease, commencing
on August 1, 1994 with respect to the Additional Expansion space,
and September 1, 1994 with respect to the Existing Expansion
Space.
    
          e.  Security Deposit.  Contemporaneously with the
execution of this First Amendment, Tenant shall deposit with
Landlord the sum of Ten Thousand Six Hundred Forty-Three and
04/100 Dollars ($10,643.04), which amount shall be applied by
Landlord to the monthly installment of Basic Annual Rent for the
Expansion Space with respect to the month of September, 1994.
    
    
          Paragraph III.A. of the Lease is hereby deleted and
there is inserted in lieu thereof the following:
    
          A.  Upon the occurrence of the Triggering Event prior
to December 31, 1996, the Tenant shall, upon twenty (20) days;
written notice from Landlord, provide to Landlord a Security
Deposit in the form of a Letter of Credit. The Letter of Credit
shall serve as a security deposit to guaranty Tenant's
performance of its monetary obligations under the Lease.
    
          The Triggering Event shall be either (i) Tenant's Total
Shareholders' Equity as stated for the most recently completed
quarterly accounting period on Tenant's Balance Sheet is less
than Ten Million Dollars ($10,000,000.00), or (ii) Tenant's
Balance Sheet for Tenant's most recently completed quarterly
accounting period states with reference to Cash and Cash
Equivalents, Marketable Securities and Trade Receivables an
amount in the aggregate of less than Five Million Dollars
($5,000,000.00).  For purposes of this lease, the term "quarterly
accounting period" shall mean calendar quarters ending March 31,
June 30, September 30 and December 31, respectively.  For
purposes of this Lease, the term "Tenant's Balance Sheet" shall
mean that Balance Sheet prepared by the Certified Public
Accountant regularly servicing Tenant.  Tenant shall provide
Landlord with a copy of its Balance Sheet no later than three (3)
days after Tenant's receipt thereof.
    
          The principal amount of the Letter of Credit shall be
initially equal to Four Hundred Eighty-Six Thousand Six Hundred
Fifty-Six Dollars ($486,656.00) plus the then unpaid balance of
the Expansion Space Loan.
    
          In the event a Letter of Credit is in fact posted, and
in the event that no event of default occurs pursuant to the
terms of this Lease, then the principal amount of the Letter of
Credit shall be reduced on the first day of the thirteenth
(13th), twenty-fifth (25th), thirty-seventh (37th) and forty-
third (43rd) months following the Triggering Event to the
respective amounts as follows:

Term of Letter of Credit      Principal Amount of Letter of
Credit
Months 13 through 24          $364,992.00 plus the then unpaid
    
                              principal balance of the Expansion
                              Space Loan
    
    Months 25 through 36      $243,328.00 plus the then unpaid
                              principal balance of the Expansion
                              Space Loan
    
    Months 37 through 42      $121,664.00 plus the then-unpaid
                              principal balance of the Expansion
                              Space Loan
    
    Month 43 and the          No Letter of Credit shall be
    remainder of the Lease    required
    Term
    
               Each Letter of Credit shall have a term of twelve
(12) months commencing on the date of posting of the first Letter
of Credit, and each subsequent Letter of Credit will have a term
of twelve (12) months except the fourth Letter of Credit shall
have a term of six (6) months.  Each Letter of Credit shall be
drawn by a commercial bank and in a form reasonably acceptable to
Landlord, provided, however, that it shall be a condition of each
Letter of Credit that (i) the holder must certify to the issuer
of the Letter of Credit that a monetary default has occurred
under the Lease and such monetary default has continued beyond
any applicable notice and cure period; and (ii) no draw against
the Letter of Credit shall be in an amount less than Five
Thousand Dollars ($5,000.00).
    
               At least fifteen (15) days before the expiration
of the first Letter of Credit, Tenant shall provide Landlord with
a replacement Letter of Credit in the amount as provided above
and for a term to commence on the expiration date of the first
Letter of Credit and terminating on the last day of the twelfth
(12th) month thereafter, except for the fourth Letter of Credit
which shall have a term of six months.  Each letter of Credit
shall be substantially similar to the prior Letter of Credit and
the replacement Letter of Credit (other than the term) must be
approved by Landlord, in its reasonable discretion, before the
commencement date of the replacement Letter of Credit.
    
               The delivery of each replacement Letter of Credit
within fifteen (15) days before the expiration of each existing
Letter of Credit and the issuance of a new Letter of Credit every
twelve (12) months for a term of twelve (12) months (except with
respect to the fourth Letter of Credit as provided above) shall
continue for forty-two (42) months, and any reduction in the
amount of any replacement Letter of Credit after the first Letter
of Credit shall also be allowed as set forth above, as long as
there has been no uncured monetary default in the prior twelve
(12) months.
    
               The fourth Letter of Credit shall expire on the
last day of the forty-second (42nd) month after the Triggering
Event.  At the expiration of the forty-second (42nd) month after
the Triggering Event, Tenant shall no longer be required to
provide any further Letter of Credit pursuant to this paragraph
III.A. during the remainder of the Lease Term as it may be
extended.  In addition to any and all other remedies available to
Landlord under this Lease, the Letter of Credit may be used at
any time by Landlord to cure or compensate Landlord for any
monetary default by Tenant under the Lease which continues
uncured beyond any applicable notice and cure period; provided
that no draw against any Letter of Credit shall be in an amount
less than Five Thousand Dollars ($5,000.00). To the extent
Landlord makes any such use of a Letter of Credit, Tenant will
immediately replenish it to its original amount.  The Letter of
Credit may not be used or applied by Tenant in lieu of Basic
Annual Rent or any other rent provided hereunder.
Notwithstanding anything set forth above in this Paragraph III.A,
if within one (1) month before the expiration of the fourth
Letter of Credit there exists one or more monetary defaults by
Tenant under the Lease which have continued uncured beyond any
applicable notice and cure period, and which are in an amount of
less than Five Thousand Dollars ($5,000.00) in the aggregate,
Landlord shall have the right to draw against the fourth Letter
of Credit in an amount sufficient to compensate it for such
monetary default or defaults."
    
          12.  Adjustments to Square Footages, Percentages and
Addresses.
    
               a.  Paragraph III.C(l) (a) of the Lease shall be
amended by striking the parenthetical after "Phase 1" in its
entirety and replacing it with "25, 45 and 35 West Watkins Mill
Road, respectively".
    
    
               b . Paragraph III.C(l) (b) of the Lease shall be
amended by striking the phrase "located at 25, 35 and 45 West
Watkins Mill Road, respectively" in the first sentence thereof
and replacing it with "located at 25, 45 and 35 West Watkins Mill
Road, respectively".  In addition, the term "Rentable Area of the
Buildings" will be deemed to be 134,546 square feet rather than
132,306 square feet in this Paragraph III.C(l)(b) and throughout
the Lease so that the term includes the Additional Expansion
Space.  Finally, the third, fifth and sixth sentences of
Paragraph III.C(l)(b) of the Lease will apply to the Building as
expanded by the Additional Expansion Space.
    
               c. Paragraph III.C(l) (c) of the Lease shall be
amended so that the term "Rentable Area of the Leased Premises"
shall be deemed to be 50,635 square feet rather than 40,843
square feet so that the term includes the Expansion Space.  This
amended square footage number shall apply throughout the Lease to
all references to the square footage of the Leased Premises.  In
addition, the second through final sentences of Paragraph
III.C(1)(c) of the Lease shall apply to the Expansion Space, and
the parties hereto acknowledge that certification of 9,792 square
feet as the gross rentable area of the Expansion Space has
occurred before the date first written above.
    
               d.  Paragraph III.C(l)(d) of the Lease shall be
    amended so that the  term "Rentable Area of the Building"
shall be deemed to be 50,635 square feet rather than 48,395
square feet so that the term includes the Expansion Space. This
amended square footage number shall apply throughout the Lease to
all references to the square footage of the Building.
    
               e.  Paragraph III.C(l)(e) of the Lease shall be
amended as of June 1, 1993 so that the term "Tenant's Portion
(with respect to the payment of Common Area Expenses, Taxes and
Insurance)" will be thirty-seven and sixty-three one-hundredths
percent (37.63%)(50,635/134,546) rather than 30.87%
(40,843/132,306) so that the term includes the Expansion Space.
This amended Tenant's Portion shall apply throughout the Lease.
    
               f. The estimated amounts set forth in Paragraph
III.C(2)(a) and (b) of the Lease shall be amended as of June 1,
1993 by adding thereto the estimated amounts of such Taxes,
Insurance and Common Area Expenses for the Expansion Space.
Therefore, commencing on June 1, 1993, Tenant shall pay to
Landlord, in addition to the amounts set forth in the Lease
sections listed above, with and at the same time as the monthly
payments of Basic Annual Rent, the following amounts with respect
to the Expansion Space:
    
                    (i)  Eight Hundred Seventy-Three Dollars and
Twelve Cents ($873.12) per month as one-twelfth of Tenant's
estimated Portion of Common Area Expenses, which amount includes
One Hundred Twenty-Two Dollars and Forty Cents ($122.40) per
month as one-twelfth of Tenant's estimated Portion of the
Insurance Costs.  The limitation on increases in Common Area
Expenses under the Lease shall apply to Tenant's Portion of
Common Area Expenses for the Expansion Space, except that the
Common Area Expenses for the Expansion Space for the first Lease
Year shall not be limited in any way.  Therefore, the fifth
paragraph of Paragraph III.C(2) of the Lease (commencing with the
phrase "Notwithstanding anything to the contrary ... "), shall
not apply to the Expansion Space.
    
               (ii) One Thousand Two Hundred Thirty-Two Dollars
and Sixteen Cents ($1,232.16) per month as one-twelfth of
Tenant's estimated Portion of Taxes.
    
          Notwithstanding the foregoing, with reference to the
Tenant's Portion (estimated and actual) of Common Area Expenses,
Insurance Cost and Taxes, the same will not be charged with
respect to the Additional Expansion Space until the Additional
Expansion Space is completed and tendered to Tenant; provided,
however, that if prior to the date the Additional Expansion Space
is completed and tendered to Tenant, Montgomery County, Maryland
assesses Taxes with respect to the Additional Expansion Space,
then and in such event, the Tenant's Portion with respect to
Taxes shall be increased to include the Additional Expansion
Space effective as of the effective date of Montgomery County's
assessment of Taxes with respect to the Additional Expansion
Space.
    
          13.  Environmental Assurances.  Paragraph IV.G of the
Lease shall be amended by adding a new subsection (5) as follows:
"Landlord shall have prepared, at its expense, at the expiration
or earlier termination of the Lease Term as herein provided, a
certification (the "Audit") from a reputable environmental
company to the effect that based upon an inspection conducted by
such environmental audit company not more than thirty (30) days
prior to the expiration or termination of the Lease Term, the
Leased Premises comply with the requirements set forth in
subsection IV.G.(2)(a) above.  In the event such Audit shows that
additional tests are necessary in order to give the required
certification, such additional costs shall be paid by tenant as
additional rent within thirty (30) days of receipt of an invoice
therefor from Landlord. In the event such Audit and/or any
additional tests show that compliance work is necessary in order
for the required certification to be given, all such compliance
work paid shall be promptly undertaken by Tenant, at Tenant's
sole cost and expense, in order for such certification to be
obtained as promptly as possible.  In addition, Tenant promptly
shall reimburse Landlord for the cost of the original Audit as
additional rent within thirty (30) days of receipt of an invoice
from Landlord."
    
          14.  Assignment/Subletting. Paragraph X.A of the Lease
shall be amended by striking the last sentence of the second
paragraph thereof in its entirety.
    
          15.  Notices.  Paragraph X.G of the Lease shall be
amended by striking Landlord's address in subsection (i) and
replacing it with "c/o Manekin Corporation, 7165 Columbia Gateway
Drive, Columbia, Maryland 21046, Attn: General Counsel".
    
          16.  Parking.  Paragraph X-0 of the Lease shall be
amended by adding Tenant's right to the non-exclusive use of an
additional three and one-half (3.5) parking spaces per one
thousand (1,000) square feet of the Existing Expansion Space for
a total of Twenty-Seven (27) parking spaces.  Therefore, in
addition to the 163 non-exclusive and 13 exclusive parking spaces
set forth ill the Lease, Tenant shall have the exclusive use of 2
of the twenty-seven (27) additional parking spaces, and the non-
exclusive use of 25 of the 27 additional parking spaces in the
front and rear of Building D.
    
          17.  Paragraph X.Q(9) shall be stricken in its entirety
and replaced with the following:  "Tenant Financing of Equipment,
Fixtures, Etc.  Landlord hereby agrees to subordinate any liens
or rights it has during the Lease Term so that Tenant may finance
or refinance, from time to time, its equipment, fixtures and
inventory, and Landlord agrees to execute promptly upon request
any and all such documents and/or instruments which reasonably
may be requested and are reasonably satisfactory to Landlord in
order to effectuate such subordination.  Tenant is hereby granted
the right to assign this Lease as security to a lender; provided
that Landlord's then-current lender approves of each and every
such assignment in writing.  If Landlord's then-current lender
approves any such assignment, then Landlord agrees to execute any
and all documents and/or instruments as may reasonably be
requested by Tenant and as are reasonably satisfactory to
Landlord and Landlord's then-current lender in order to
effectuate such security.  Tenant shall reimburse Landlord as
additional rent within thirty (30) days of receipt of an invoice
from Landlord for all Landlord's legal costs and any and all
legal costs Landlord must pay to its then-current lender in order
to review Tenant's proposed assignment and all documents and/or
instruments effectuating the assignment as follows: (i) with
reference to Landlord's legal fees, an amount not in excess of
Five Hundred Dollars ($500.00) per assignment; and (ii) with
reference to Landlord's then-current lender, there shall be no
fee or cost; and (iii) with reference to any lender after its
then-current lender, an amount which is commercially reasonable
for that lender's legal cost with reference to any such
assignment."
    
          18.  Right of First Offer.
    
               a.  If at any time during the Lease Term any
portion of the existing space in the first phase of the Project
i.e., 25, 35 and/or 45 West Watkins Mill Road (collectively, the
"First Offer Space") becomes available; i.e., unencumbered by a
lease with Landlord, then subject to the expansion rights of
other tenants in the Project as described on Exhibit E attached
hereto and made a part hereof, Tenant shall have the right of
first offer (the "First Offer Right") to lease such First Offer
Space.  Landlord shall give Tenant prompt written notice of the
availability of the First Offer Space and the terms on which
Landlord is willing to lease it ("Landlord's Notice"); provided
that:  (i) the basic annual rent for any such First Offer Space
shall equal ninety-five percent (95%) of the then-market rent for
such space, taking into consideration, among other things, the
cancellation options under Paragraph III.B of the Lease; (ii) in
no event shall the basic annual rent for any First Offer Space be
less than the Basic Annual Rent in effect during the immediately
preceding Lease Year; and (iii) the basic annual rent for any
First Offer Space shall increase by three and one-half percent
(3.5%) per annum compounded annually, on each anniversary of the
First Offer Commencement Date (as defined below).  Market rent
shall be determined in the same manner as set forth in subsection
(iii) of Rider No. 1 of the Lease, taking into consideration the
cancellation options as set forth above.


    
               Tenant's exercise of its First Offer Right shall
be effective only upon Tenant's written notice to Landlord
("Tenant's Notice") given five (5) days after Tenant's receipt of
Landlord's Notice.  If Tenant does not duly exercise its First
Offer Right with respect to any particular First Offer Space,
Landlord shall be free to offer such Space for lease to any other
tenant on substantially the terms offered to Tenant hereunder.
If Landlord leases any such First Offer Space to another tenant
and such Space becomes available one or more times during the
Lease Term, Landlord shall not have to re-offer such space to
Tenant hereunder.
    
               The first day of the lease term f or the First
Offer Space shall be the earlier to occur of (i) the ninetieth
(90th) day after Landlord provides Tenant access to the First
Offer Space in a broom-clean condition such that Tenant can
commence the construction of its improvements to the First Offer
Space; or (ii) the date Tenant begins to conduct its business
from the First Offer Space (the "First Offer Commencement Date").
    
               b.   Notwithstanding any other provision hereof,
the following provisions shall apply to the First Offer Right and
to Tenant's lease, if any, of the First Offer Space:
    
                    (i)  Tenant shall not be entitled to exercise
the First Offer Right unless on the date Tenant gives Landlord
the First Offer Notice and on the First Offer Commencement Date:
(A) the Lease as hereby or hereafter amended, is in full force
and effect; (B) Tenant has paid to Landlord any and all amounts
which are then due from Tenant under this Lease and are in
arrears, including, without limitation, any and all late fees;
and (C) Tenant is not materially and/or substantially in default
beyond any applicable notice and cure period with reference to
any material or substantial non-monetary covenant in the Lease to
be performed, observed or complied with by Tenant;
    
                    (ii) Tenant's rental of the First Offer Space
shall be for a term commencing on the First Offer Commencement
Date and continuing through the balance of the Lease Term;
provided, however, that if on the First Offer Commencement Date
there are then less than five (5) full years remaining on the
Lease Term, then and in such event, the Lease Term (including the
First Offer Term) shall automatically be extended so as to expire
on the last day of the calendar month in which the fifth (5th)
annual anniversary of the First Offer Commencement Date occurs;
    
                    (iii)  The First Offer Space shall be
delivered to Tenant in "as is" condition (i.e., there shall be no
Expansion Space Contribution or Expansion Space Loan with respect
thereto).  Any improvements to the First Offer Space shall be
made by Tenant at Tenant's sole cost and expense and shall be
performed at Tenant's sole cost and expense and shall be
performed in accordance with drawings, plans and specifications
prepared by Tenant and approved by Landlord, such approval not to
be unreasonable withheld;
    
                    (iv)  From and after the First Offer
Commencement Date, all references in the Lease and Riders thereto
to the Leased Premises shall refer to the aggregate Premises and
the First Offer Space and all references to the area or Rentable
Area of the Leased Premises shall, for all purposes of this
Lease, be deemed to include both the area of the Leased Premises
and of the First Offer Space.  Tenant's Portion shall be adjusted
accordingly to reflect the leasing of the First Offer Space; and
    
                    (v)  Except as otherwise expressly
provided in this Paragraph 18, from and after the First Offer
Commencement Date, all of the covenants and agreements set forth
in the Lease and Riders thereto shall apply to the First Offer
Space.
    
               c. Time is of the essence with respect to Tenant's
exercise of its rights under this Paragraph 18.  Tenant
acknowledges that Landlord requires strict adherence to the
requirement that Tenant's Notice be timely made and in writing.
    
          19.  Tenant Authorization.  Tenant represents and
warrants to Landlord that this First Amendment has been validly
authorized and is executed by an authorized officer of Tenant and
that its terms are binding upon and enforceable against Tenant in
accordance Herewith.
    
          20. Lease as Amended.  From and after the full
execution of this First Amendment, the Lease shall be amended and
in full force and effect in such respects as are set forth in
this First Amendment, and all other provisions, terms, conditions
and riders of and to the Lease shall in all respects remain as
set forth in the Lease, in full force and effect and applicable
to the Expansion Space, except as specifically set forth in this
First Amendment.
    
          21.  Tenant Reaffirmation of Lease.  Tenant hereby
reaffirms and restates, and agrees to be bound by, the covenants,
promises, representations and agreements set forth in the Lease
(except to the extent that they are expressly superseded by this
First Amendment) as if made herein.
    
    
    
                              LANDLORD:
    WITNESS/ATTEST:           CLOPPER ROAD ASSOCIATES,
                              a Maryland general partnership
    
                              By: M.O.R.M. Associates Limited
                                   Partnership
    
                              By:  RA & FM, Inc.
    
     Bonnie J. Gottlieb       By:  Richard M. Alter(SEAL)
                              Name:  Richard M. Alter
                              Title:  President
    
    
                              TENANT:
    WITNESS                   MEDIMMUNE, INC., a Delaware
                              Corporation
    
    David M. Mott             By:  Emilio O. DiCataldo
                              Name:  Emilio O. DiCataldo
                              Title:  Senior Vice President
                                      Finance and Administration
    
    
    
    STATE OF MARYLAND         )
                              )TO WIT:
    COUNTY OF BALTIMORE       )
    
     I HEREBY CERTIFY that on this 8th day of June, 1993, before
me, the subscribed, a Notary Public of the State and county
aforesaid, personally appeared Richard M. Alter, President of RA
& FM, Inc., a general partnership of M.O.R.M. Associates Limited
Partnership, general partner of Clopper Road Associates, and he
acknowledged the foregoing Lease Agreement to be the act and deed
of said general partnership.
    
     WITNESS my hand and Notarial Seal.
    
                                   Diane J. Hopkins
                                   Notary Public
                                   Baltimore Co., MD
    
    My Commission Expires:  May 1, 1995
    
    
    
STATE/COMMONWEALTH OF MARYALND     )
                                   )TO WIT:
COUNTY OF MONTGOMERY               )

    I HEREBY CERTIFY that on this 7th day of June, 1993, before
me, the subscribed, a Notary Public of the State/Commonwealth and
County aforementioned, personally appeared Emilio O. DiCataldo of
MedImmune, Inc., Tenant, and he acknowledged the foregoing Lease
Agreement to be his/the act and deed of the corporation.

    WITNESS my hand and Notarial Seal.


                                   Carol A. Iorio
                                   Notary public

My Commission Expires:  July 11, 1994



EXHIBIT 10.60


                   SECOND AMENDMENT OF LEASE

                            BETWEEN

                    CLOPPER ROAD ASSOCIATES AND

                    

                        MEDIMMUNE, INC.


                      DATE:  June 30, 1993
                                
                                
                                
                   SECOND AMENDMENT OF LEASE


     THIS SECOND AMENDMENT OF LEASE (this "Second Amendment") is
made this 30th day of June, 1993, by and between CLOPPER ROAD
ASSOCIATES, a Maryland general partnership ("Landlord") and
MEDIMMUNE, INC., a Delaware corporation ("Tenant").

                      Explanatory Statement
     A.   Landlord and Tenant entered into a Lease dated February
14, 1991 (the "Original Lease") for a portion of Building D
located at 35 West Watkins Mill Road in the Bennington Corporate
Center, which portion contains 40,843 square feet (the "Original
Leased Premises").

     B.   Landlord and Tenant entered into a First Amendment of
Lease dated June 8, 1993 (the "First Amendment") (collectively,
the Original Lease and First Amendment shall be termed the
"Lease"), pursuant to which Building D was expanded, the square
footage of the Original Leased Premises was increased (the
"Expansion Space") (collectively, the Original Leased Premises
and Expansion Space shall be termed the "Expanded Leased
Premises"), and certain other changes were made to the Original
Lease.

    C.   Landlord and Tenant now desire to expand the square
footage of the Expanded Leased Premises by adding space in
Building B located at 25 West Watkins Mill Road, adjusting the
Rent payable therefor, and making certain other changes to the
Lease, all as more specifically set forth below.

     NOW, THEREFORE, in consideration of the Explanatory
Statement, which shall be deemed a substantive part of this
Second Amendment, the covenants of the parties herein and in the
Lease, and other good and valuable consideration, the receipt and
adequacy of which are hereby acknowledged, Landlord and Tenant
hereby agree as follows:

          1.   Effective Date of Second Amendment.  From and
after the date of this Second Amendment, the Lease shall be
amended as set forth below.

          2.   Capitalized Terms.  All capitalized terms in this
Second Amendment shall have the same meanings as those in the
Lease, unless specifically set forth otherwise herein.

          3.   Second Expansion Space.  Landlord hereby leases to
Tenant, and Tenant hereby leases from Landlord, in addition to
the Expanded Leased Premises, approximately Seven Thousand Four
Hundred Nineteen (7,419) rentable square feet of space in
Building B (the "Second Expansion Space").  The Second Expansion
Space is shown more particularly on Exhibit A attached hereto and
made a part hereof.

          4.   Second Expansion Space.  Tenant shall lease the
Second Expansion Space in "As Is" condition.

          5.   Landlord's Contribution. Landlord shall pay Tenant
Eight Dollars ($8.00) per square foot of the Second Expansion
Space, for a total of Fifty-Nine Thousand Three Hundred Fifty-Two
Dollars ($59,352.00) ("Landlord's Contribution") as an allowance.
Landlord's Contribution shall be paid to Tenant in one lump sum
within thirty (30) days of the date on which the Lease is fully
executed by Landlord and Tenant.

          6.   Construction Provisions of Original Leased
Premises and Expansion Space Not Applicable to Second Expansion
Space.  Article I.B of the Original Lease and Paragraphs 4
through 7 of the First Amendment shall only apply to the Original
Leased Premises and Expansion Space, respectively, and shall not
apply to the Second Expansion Space.

          7.   Term of Second Expansion Space Lease.  The Second
Expansion Space Term will commence on the Second Expansion Space
Commencement Date and will end on the last day of the Lease Term.
From and after the date of this Second Amendment, the term "Lease
Term" will include the Second Expansion Space Term.  Upon the
occurrence of the Second Expansion Space Commencement Date,
Landlord and Tenant shall execute in writing a statement setting
forth the Second Expansion Space Commencement Date.

               a.   Second Expansion Space Commencement Date.
The Second Expansion Space Commencement Date shall be the date
first written above.

               b.   Acceptance of Second Expansion Space.  Upon
Landlord's delivery of possession of the Second Expansion Space
to Tenant, Tenant will be deemed to have accepted the Second
Expansion Space subject to Landlord's duties otherwise provided
herein.

          8.   Cancellation Option.

          Paragraph I.B of the Lease shall only apply to the
Expanded Leased Premises and shall not apply to the Second
Expansion Space.

          In addition to Tenant's rights under Paragraph I.B of
the Lease, Tenant shall have the right to terminate this Lease
with respect to the Second Expansion Space only (for purposes of
this paragraph 8 only, termination of the Lease shall be deemed
to be termination of the Lease with respect to the Second
Expansion Space only) at any time from and after the expiration
of the sixtieth (60th) month of the Second Expansion Space Lease
Term upon at least six (6) months' prior written notice to
Landlord, which notice may be delivered to Landlord at any time
from and after the expiration of the fifty-fourth (54th) month of
the Second Expansion Space Lease Term.  If Tenant exercises its
right to terminate this Lease under this paragraph 8, Tenant
shall pay Landlord by certified or bank cashier's check made
payable to Landlord, or at Landlord's option, by wire transfer of
immediately available funds to Landlord's account, on or before
the month immediately preceding the proposed date of Lease
termination in Tenant's notice, a fee (the "Fee") of Fifteen
Thousand Dollars ($15,000.00), and as of the Lease termination
date hereunder, Tenant shall have cured any uncured monetary
default under the Lease, including any late fees due thereon,
without any obligation to pay any accelerated Rent.
Notwithstanding the immediately preceding sentence, the Fee shall
be reduced by Five Hundred Dollars ($500.00) per month commencing
upon the expiration of the sixtieth (60th) month of the Second
Expansion Space Lease Term, so that if Tenant's exercise of its
right to terminate the Lease under this paragraph 8 is effective
after the expiration of the ninetieth (90th) month of the Second
Expansion Space Lease Term, Tenant shall owe no Fee upon
termination of the Lease hereunder.

          Landlord shall provide to the Tenant no less than
thirty (30) days before the last day of the Second Expansion
Space Lease Term pursuant to Tenant's notice of termination under
this paragraph 8 (the "Termination Date"), a termination rent
statement (the "Termination Rent Statement"), which Termination
Rent Statement shall set forth through the Termination Date all
then-uncured monetary defaults with respect to Basic Annual Rent,
including any previously-billed and unpaid late fees due on any
and all such late payments of Basic Annual Rent, and all Basic
Annual Rent which is then unpaid or which will be payable under
the Lease through and including the Termination Date.
Notwithstanding anything set forth above in this paragraph 8, the
termination of the Lease pursuant to this paragraph shall not be
effective until Landlord has received from Tenant the Fee, if
any, and the amount set forth in the Termination Rent Statement;
provided, however, that if Landlord fails to provide the
Termination Rent Statement to Tenant as and when required
hereunder, the termination of the Lease pursuant to this
paragraph shall nevertheless be effective on the Termination
Date; provided that in such event, Tenant has timely paid the
Fee, if any, to Landlord. If Landlord provides the Termination
Rent Statement to Tenant later than as set forth above, then
Tenant's failure to pay the amount set forth in the Termination
Rent Statement before the Termination Date shall not extend the
termination of this Lease pursuant to this paragraph beyond the
Termination Date, but Tenant shall nevertheless be required to
pay the amount set forth in the Termination Rent Statement within
thirty (30) days of receipt thereof. Landlord shall have the
right, for a period of one-hundred eighty (180) days after the
Termination Date (the "Post Termination Period"), to provide
Tenant with a statement setting forth any accrued and unpaid late
fees on sums due under the Lease other than Basic Annual Rent,
and Common Area Expenses, Taxes, Insurance, and any other amounts
other than those set forth in the Termination Rent Statement
which are due and owing by Tenant to Landlord through the
Termination Date (the "Post Termination Statement"). Tenant shall
pay the amount set forth in the Post Termination Statement within
twenty (20) days after receipt of the Post Termination Statement
from Landlord. If Landlord has not delivered to Tenant the
Termination Rent Statement and/or the Post Termination Statement
by the end of the Post Termination Period, Landlord shall have no
further right to make any claim for payment of any sums payable
by Tenant to Landlord pursuant to this Lease other than the Fee,
if any, and the sums set forth in whichever Statement, if any,
that has been delivered to Tenant by the end of the Post
Termination Period.

          9.   Basic Annual Rent for the Second Expansion Space.

               a.   Payment of Basic Annual Rent for the Second
Expansion Space.  For a period of sixty (60) days beginning on
the Second Expansion Space Commencement Date (the "Free Rent
Period"), Tenant shall not have to pay any Basic Annual Rent for
the Second Expansion Space.  Beginning on the first day after the
Free Rent Period and continuing through and including November
30, 1993, Tenant agrees to pay Landlord Basic Annual Rent of One
Dollar and Twenty-Three Cents ($1.23) per square foot, for a
total of Nine Thousand One Hundred Twenty-Five Dollars and Thirty
Seven Cents ($9,125.37) in equal monthly installments of Seven
Hundred Sixty Dollars and Forty-Five Cents ($760.45).  Basic
Annual Rent will increase once annually on each succeeding
December 1 as set forth below in this paragraph 9(a) through
November 30, 1999.  Commencing on December 1, 1999 and continuing
on each succeeding December 1, Basic Annual Rent will increase at
a fixed rate of three percent (3%) per year. A schedule of the
amounts of Basic Annual Rent due during each month of each Lease
Year of the Lease Term is as follows:
                                   Annual Basic     Monthly
Lease Year     Sq. Ft. Rate        Annual Rent    Installment
Free Rent Period
Until 11/30/93       1.23          $  9,125.37    $   760.45
Until 11/30/94      11.72            86,960.58      7,245.89
Until 11/30/95      12.04            89,324.76      7,443.73
Until 11/30/96      12.38            91,847.22      7,653.94
Until 11/30/97      12.72            94,369.68      7,864.14
Until 11/30/98      13.07            96,966.33      8,080.53
Until 11/30/99      13.46            99,859.74      8,321.65
Until 11/30/00      13.86           102,827.34      8,568.95
Until 11/30/01      14.28           105,943.32      8,828.61
Until 11/30/02      14.71           109,133.49      9,094.46
Until 11/30/03      15.15           112,397.85      9,366.49
Until 11/30/04      15.60           115,736.40      9,644.70
Until 11/30/05      16.07           119,223.33      9,935.28
Until 11/30/06      16.55           122,784.45     10,232.04


               b.   Payment of Basic Annual Rent for Second
Expansion Space.  The above amounts of Basic Annual Rent for the
Second Expansion Space shall be paid at the time and in addition
to the payment of Basic Annual Rent for the Expanded Leased
Premises, and otherwise in the manner set forth in Article III.B
of the Lease, commencing on July 1, 1993.

          10.  Security Deposit.   Paragraph III.A. of the Lease
shall only apply to the Expanded Leased Premises and shall not
apply to the Second Expansion Space.

          11.  Adjustments to Square Footages, Percentages and
Addresses.

               a.   Paragraph III.C(1)(c) of the Lease shall be
amended in that the term "Rentable Area of the Leased Premises"
shall be deemed to be 58,054 square feet rather than 50,635
square feet so that the term includes the Second Expansion Space.
This amended square footage number shall apply throughout the
Lease to all references to the square footage of the Leased
Premises.  The second through final sentence of Paragraph
III.C(1)(c) of the Lease shall not apply to the Second Expansion
Space.

               b.   Paragraph III.C(1)(d) of the Lease shall be
amended by adding a new sentence at the end thereof as follows:
"The "Rentable Area of Building B" will be deemed to be 32,306
square feet."

               c.   Paragraph III.C(1)(e) of the Lease shall be
amended as of the Second Expansion Commencement Date so that the
term "Tenant's Portion (with respect to the payment of Common
Area Expenses, Taxes and Insurance)" will be forty-three percent
(43%) (58,054/134,546) rather than 37.63% (50,635/134,546) so
that the term includes the Second Expansion Space.  This amended
Tenant's Portion shall apply throughout the Lease.
               d.   Paragraph III.C(1)(f) of the Lease shall be
amended by adding the underlined language as follows:

               "Landlord agrees that Common Area Expenses shall
not include: (i) a capital cost or depreciation thereon relating
to the construction of the buildings or the common areas; (ii)
all costs, charges or payments made pursuant to a deed of trust
or deed of trust note or other obligations secured by the
buildings or any of them, or any other note used to finance or
refinance the Leased Premises or the buildings or any part
thereof; (iii) any of Landlord's income, inheritance, estate or
transfer taxes;  (iv) any costs, charges or expenses relating to
financing or refinancing the Leased Premises, the buildings or
any part thereof, or any cost relating to a tenant in particular
as contrasted to tenants in general including without limitation
build-out allowances, rent concessions, brokerage commission,
attorneys or other professional fees relating to the negotiation
of relationships with a tenant or a prospective tenant or
enforcement of rights pursuant to a lease or other obligation or
defense of any actions brought by a tenant or any other party
with respect to any lease or other contractual obligation between
Landlord and any other party; or (v) except with respect to on
site personnel who perform janitorial, maintenance and/or repair
services with reference to the Project, the wages, salaries or
other compensation or remuneration, and any taxes, insurance or
benefits relating thereto (collectively, the "Wages and
Benefits"), of any managing agent and any employees of any
managing agent as well as those who perform functions similar to
functions performed by managing agents (except for the Wages and
Benefits attributable to that portion of time that a managing
agent, employees of any managing agent, or those who perform
functions similar to functions performed by managing agents,
spend on-site)."

               e.   The estimated amounts set forth in Paragraph
III.C(2)(a) and (b) of the Lease shall be amended as of the
Second Expansion Commencement Date by adding thereto the
estimated amounts of such Taxes, Insurance and Common Area
Expenses for the Second Expansion Space.  Therefore, commencing
on the Second Expansion Commencement Date, Tenant shall pay to
Landlord, in addition to the amounts set forth in the Lease
sections listed above, with and at the same time as the monthly
payments of Basic Annual Rent, the following amounts with respect
to the Second Expansion Space:

                    (i)  Six Hundred Sixty-One Dollars and Fifty
Three Cents ($661.53) per month as one-twelfth of Tenant's
estimated Portion of Common Area Expenses, which amount includes
Ninety-Two Dollars and Seventy-Four Cents ($92.74) per month as
one-twelfth of Tenant's estimated Portion of the Insurance Costs.
                    The limitation on increases in Common Area
Expenses under the Lease shall apply to Tenant's Portion of
Common Area Expenses for the Second Expansion Space, except that
the Common Area Expenses for the Second Expansion Space for the
first Lease Year shall not be limited in any way.  Therefore, the
fifth paragraph of Paragraph III.C(2) of the Lease (commencing
with the phrase "Notwithstanding anything to the contrary ...")
shall not apply to the Second Expansion Space.

                    (ii)  Nine Hundred Thirty-Three Dollars and
Fifty-Six Cents ($933.56) per month as one-twelfth of Tenant's
estimated Portion of Taxes.

          12.  Use Restrictions and Rules.   Paragraph IV.A of
the Lease shall be amended in that the bracketed language set
forth below shall only apply to the Expanded Leased Premises and
shall not apply to the Second Expansion Space:

          Tenant agrees to use the Leased Premises only as an
office and a laboratory and for no other purpose. In addition,
Tenant agrees to be bound by all laws, requirements, rules,
orders, ordinances, zoning and restrictive covenants applicable
to the Building, Tenant's business conducted in the Leased
Premises and the Property, whether in force at the Commencement
Date of this Lease or thereafter, and by the Rules and
Regulations as announced by Landlord from time to time (including
those set forth in Exhibit D which shall be uniformly applied in
a nondiscriminatory manner in like or similar circumstances with
respect to all tenants in the Project) (collectively, the
"Restrictions"). Tenant hereby represents and warrants to
Landlord that as of the date of execution of the Lease by all
parties, Tenant has obtained [or is expending reasonable efforts
to obtain] all licenses and permits required from any and all
applicable governmental authorities due to the nature of Tenant's
business operations in the Leased Premises. [Tenant shall have no
obligation to commence litigation or to pay higher than normal
fees for the issuance of such licenses and/or permits in order to
obtain such licenses and/or permits.]

          If Tenant's business is prohibited by any ordinance now
or [hereafter enacted or if, because of any applicable laws,
ordinances, rules, regulations, zoning ordinances or statutes of
any duly constituted public authority having jurisdiction over
the Leased Premises or the business of the Tenant, the licenses
and permits necessary for Tenant's business, including without
limitation, business licenses, cannot be obtained despite
Tenant's reasonable efforts (which efforts shall not include any
obligation by Tenant to pay higher than normal fees for the
issuance of such licenses and permits), or, if Tenant's business
is prohibited by any zoning or any use ordinance now or]
hereinafter enacted, Tenant, at its election, may, upon thirty
(30) days' prior written notice to Landlord, terminate this
Lease. In such event, the thirtieth (30th) day after Tenant's
notice date shall be the last date of the term of this Lease as
though set forth herein, and neither party shall have any further
obligations under this Lease[, except that: (i) Tenant shall,
within thirty (30) days of the Lease termination date, pay to
Landlord, by certified or bank cashier's check made payable to
Landlord, in one lump sum, the entire unamortized balance of the
Loan Amount; (ii) concurrently with Landlord's receipt of
Tenant's payment of the unamortized balance of the Loan Amount,
Tenant shall receive back its letter of credit required under
Paragraph III.A above; and (iii) concurrently with Tenant's
receipt of its letter of credit, Landlord shall receive back its
letter of credit required under Paragraph I.B(10) above, if such
letter of credit has not previously been returned to Landlord].

          Notwithstanding the immediately preceding paragraph,
Tenant shall have the right to contest any zoning or use
ordinance [now or] hereafter enacted, at Tenant's sole expense,
and Landlord reasonably shall cooperate with Tenant, at no cost
to Landlord. Tenant shall have the right to select and control
its own counsel with respect to any litigation or administrative
proceeding instituted pursuant to such contest. [If Tenant
contests a zoning or use ordinance enacted or in existence on or
before the Commencement Date, Tenant shall pay Rent during the
entire period that Tenant pursues the contest from and after the
Commencement Date until thirty (30) days after Tenant gives
Landlord notice of Lease termination hereunder. If Tenant
contests a zoning or use ordinance enacted after the Commencement
Date,]  Tenant shall continue to pay Rent during the entire
period that Tenant pursues the contest, until thirty (30) days
after Tenant gives Landlord notice of Lease termination
hereunder.

          13.  Improvements by Tenant.  Subsection (i) of the
second paragraph of Paragraph IV.B of the Lease shall be stricken
in its entirety and replaced with the following:

               "(i)  the aggregate cost of the same does not
               exceed One Hundred Thousand Dollars ($100,000)
               with respect to the Expanded Leased Premises, or
               Fifty Thousand Dollars ($50,000) with respect to
               the Second Expansion Space...."
               
          14.  Insurance.  The third through seventh paragraphs
of Paragraph IV.E of the Lease shall only apply to the Expanded
Leased Premises and shall not apply to the Second Expansion
Space.
          15.  Damage and Destruction.  Article VI of the Lease
shall be amended by adding a new paragraph at the end thereof as
follows:
          Notwithstanding the preceding three (3) paragraphs of
this Article VI, if Landlord or Tenant has the right to terminate
the Lease pursuant to this Article VI due to damage or
destruction to the Expanded Leased Premises only (excluding the
Second Expansion Space) by fire, other casualty, or any other
cause (except condemnation), then Landlord or Tenant
automatically shall have the right pursuant to this Article VI to
terminate the Lease with respect to the Second Expansion Space,
regardless of whether the Second Expansion Space has suffered any
damage or destruction.  However, if Landlord or Tenant has the
right to terminate the Lease pursuant to this Article VI due to
damage or destruction to the Second Expansion Space only
(excluding the Expanded Leased Premises), Landlord or Tenant
shall not have any right to terminate the Lease with respect to
the Expanded Leased Premises.  If Landlord or Tenant duly
terminates the Lease under Article VI with respect to the Second
Expansion Space, the Lease shall remain in full force and effect
with respect to the Expanded Leased Premises and the Second
Expansion Space shall be stricken from the definition of "Leased
Premises" under the Lease.  Upon such damage or destruction to
the Second Expansion Space, the parties agree to enter into an
amendment to the Lease setting forth the reduced Leased Premises
and other related changes to the Lease, including, without
limitation, reduction of Basic Annual Rent and Tenant's Portion
of Common Area Expenses, Taxes and Insurance.

          16.  Condemnation.  The last sentence of the second
paragraph of Article VII of the Lease shall only apply to the
Expanded Leased Premises, and shall not apply to the Second
Expansion Space.  In addition, Article VII of the Lease shall be
amended by adding a new paragraph at the end thereof as follows:

          Notwithstanding the preceding two (2) paragraphs of
this Article VII, if Landlord or Tenant has the right to
terminate the Lease pursuant to this Article VII due to taking or
condemnation of the Expanded Leased Premises only (excluding the
Second Expansion Space), then Landlord or Tenant automatically
shall have the right pursuant to this Article VII to terminate
the Lease with respect to the Second Expansion Space, regardless
of whether the Second Expansion Space has been condemned in whole
or in part.  However, if Landlord or Tenant has any right to
terminate the Lease pursuant to this Article VII due to
condemnation or taking of the Second Expansion Space only
(excluding the Expanded Leased Premises), Landlord or Tenant
shall not have the right to terminate the Lease with respect to
the Expanded Leased Premises.  If Landlord or Tenant duly
terminates the Lease under Article VII with respect to the Second
Expansion Space, the Lease shall remain in full force and effect
with respect to the Expanded Leased Premises, and the Second
Expansion Space shall be stricken from the definition of "Leased
Premises" under the Lease.  Upon such condemnation of the Second
Expansion Space, the parties agree to enter into an amendment to
the Lease setting forth the reduced Leased Premises and other
related changes to the Lease, including, without limitation, a
reduction of Basic Annual Rent and Tenant's Portion of Common
Area Expenses, Taxes and Insurance.

          17.  Assignment/Subletting.   The last paragraph of
Paragraph X.A of the Lease shall only apply to the Expanded
Leased Premises and shall not apply to the Second Expansion
Space.

          18.  Signage.  Paragraph X.N of the Lease shall not
apply to the Second Expansion Space.  Tenant shall nave no
exterior signage on Building B.

          19.  Parking.  Paragraph X.O of the Lease shall be
amended by adding Tenant's right to the non-exclusive use of an
additional three and one-half (3.5) parking spaces per one
thousand (1,000) square feet of the Second Expansion Space for a
total of Twenty-Six (26) parking spaces.  Therefore, in addition
to the 188 non-exclusive and 15 exclusive parking spaces set
forth in the Lease, Tenant shall have the non-exclusive use of 26
additional parking spaces in the front and rear of Building B.
If Tenant's loading requirements in the rear of Building B are
such that there is room for additional parking, then Tenant shall
have the non-exclusive use of additional parking space in the
rear of Building B.

          20.  Force Majeure. Paragraph X.P of the Lease shall be
amended by striking the last sentence thereof and adding a new
sentence as follows:  "Notwithstanding the foregoing, except as
specifically provided in Paragraph II.C above with respect to the
Original Leased Premises, the provisions of this clause shall not
be construed as to allow, permit or authorize Landlord to deliver
(i) the Original Leased Premises in the condition required after
December 31, 1991; or (ii) the Second Expansion Space after July
31, 1993."

          21.  A new Paragraph X.Q(11) of the Lease shall be
added as follows:  "Landlord and Tenant acknowledge that this
Second Amendment is contingent upon the full execution of an
agreement (the "Termination Agreement") between Landlord and
Nissei Sangyo America, Ltd. ("Hitachi"), satisfactory to both
Landlord and Hitachi, terminating the lease between Landlord and
Hitachi dated May 1, 1989, as amended, with respect to the Second
Expansion Space.  If a Termination Agreement is not fully
executed and delivered to Landlord and Hitachi by June 30, 1993,
this Second Amendment automatically shall be null and void and of
no further force and effect, and neither Landlord nor Tenant
shall have any further obligations under this Second Amendment."

          22.  Tenant Authorization.  Tenant represents and
warrants to Landlord that this Second Amendment has been validly
authorized and is executed by an authorized officer of Tenant and
that its terms are binding upon and enforceable against Tenant in
accordance herewith.

         23.  Lease as Amended.  From and after the full
execution of this Second Amendment, the Lease shall be amended
and in full force and effect in such respects as are set forth in
this Second  Amendment, and all other provisions, terms,
conditions and riders of and to the Lease shall in all respects
remain as set forth in the Lease, in full force and effect and
applicable to the Second Expansion Space, except as specifically
set forth in this Second Amendment.

          24.  Tenant Reaffirmation of Lease.  Tenant hereby
reaffirms and restates, and agrees to be bound by, the covenants,
promises, representations and agreements set forth in the Lease
(except to the extent that they are expressly superseded by this
Second Amendment) as if made herein.
                              LANDLORD:
WITNESS/ATTEST:               CLOPPER ROAD ASSOCIATES,
                              a Maryland general partnership

                              By:  M.O.R.M. Associates Limited
                                   Partnership
                                   
                              By:  RA & FM, Inc.
Kay M. Mayo                   By:  Richard M. Alter(SEAL)
                                   Name: Richard M. Alter

                                   Title: President



                              TENANT:

WITNESS/ATTEST:               MEDIMMUNE, INC., a Delaware
                              corporation


Sandra K. Kinder              By:  Emilio O. DiCataldo SEAL)

                              Name: Emilio O. DiCataldo

                              Title:  Senior Vice President
                                      Finance and Administration
                                      
                                      
                                      
                  (notaries on following page)

                                

                                

STATE OF MARYLAND        )
                         ) TO WIT:
COUNTY OF Baltimore      )


     I HEREBY CERTIFY that on this 2nd  day of July, 1993, before
me, the subscribed, a Notary Public of the State and county
aforesaid, personally appeared Richard Alter, President of RA &
FM, Inc., general partner of M.O.R.M. Associates Limited
Partnership, general partner of Clopper Road Associates, and he
acknowledged the foregoing Lease Agreement to be the act and deed
of said general partnership.

     WITNESS my hand and Notarial Seal.

                              Diane J. Hopkins
                              Notary Public
                              Baltimore Co., MD
                              My Commission Expires May 1, 1995



STATE/COMMONWEALTH OF MARYLAND)
                              ) TO WIT:
COUNTY OF MONTGOMERY          )


     I HEREBY CERTIFY that on this 30th  day of June, 1993,
before me, the subscribed, a Notary Public of the
State/Commonwealth and County aforesaid, personally appeared
Emilio O. DiCataldo, of MedImmune, Inc., Tenant, and he
acknowledged the foregoing Lease Agreement to be his/the act and
deed of said corporation.

     WITNESS my hand and Notarial Seal.



                              Carol A. Iorio
                              Notary Public



My Commission Expires:  July 11, 1994
EXHIBIT A      Description of Expansion Space

EXHIBIT B      Description of Shell Plans

EXHIBIT C      Description of Expansion Space Plans

EXHIBIT D      Shell Construction Costs



EXHIBIT E      List of Tenants With Superior Rights to
               Tenant to Lease Available Space in First Phase of
               Project












                                       EXHIBIT 10.61

                    THIRD AMENDMENT OF LEASE
                                
          THIS THIRD AMENDMENT OF LEASE (this "Amendment") is
made this 15th day of April, 1996 but shall be deemed effective
as of January 1, 1995 (the "Effective Date") by and between
CLOPPER ROAD ASSOCIATES, a Maryland joint venture ("Landlord")and
MEDIMMUNE, INC., a Delaware corporation("Tenant").


                          INTRODUCTION
                                
          A.  Landlord and Tenant entered into a Lease Agreement
dated February 14, 1991 (the "Original Lease") , whereby Tenant
agreed to lease from Landlord forty thousand eight hundred forty
three (40,843) square feet (the "Original Leased Premises") in
the building (the "Building") known as Building D, located at 35
West Watkins Mill Road, in the Bennington Corporate Center in
Gaithersburg, Maryland.

          B.  Landlord and Tenant entered into a First Amendment
of Lease dated June 8, 1993 (the "First Amendment") , pursuant to
which Building ID was expanded and the square footage of the
original Leased Premises was increased by the amount of such
expansion (the "Expansion Space") collectively, the Original
Leased Premises and the Expansion space shall be hereinafter
referred to be the "Expanded Leased Premises" . Certain other
changes were also made to the Original Lease as a result of the
First Amendment.

          C.  Landlord and Tenant entered into a Second Amendment
of Lease dated June 30, 1993 (the "Second Amendment") pursuant to
which the square footage of the Expanded Leased Premises was
increased by adding space (the "Additional Space") in Building B
located at 25 West Watkins Mill Road (collectively, the original
Leased Premises, the Expansion Space and the Additional Space are
hereinafter referred to as the "Leased Premises"); the Rent
payable was adjusted, and certain other changes were made to the
original Lease.

          D.  The Original Lease, the First Amendment and the
Second Amendment are herein collectively referred to as the
"Lease".

          E.  As a result of changes in the size of the Project,
Landlord and Tenant desire to adjust the square footages,
percentages and addresses in the Lease, and modify certain other
provisions of the Lease as more specifically set forth below.

       NOW, THEREFORE, in consideration of the Introduction,
which is deemed a substantive part of this Amendment, the
covenants of the parties herein and in the Lease and other good
and valuable consideration, the receipt and adequacy of which are
hereby acknowledged, Landlord and Tenant hereby agree as follows:

       1.  Adjustments to Square Footages, Percentages and
Addresses

       (a)  Paragraph III.C.1(a) is amended by striking the
phrase after "Phase 3" in its entirety and replacing it with "
Buildings A and E (15 and 50 West Watkins Mill Road)."

      (b)  Paragraph III.C.l(b) is amended so that the term
"Rentable Area of the Buildings" will be deemed to be 137,222
square feet rather than 134,546 square feet in Paragraph
111.C.1(b) and throughout the Lease.

      (c)  Paragraph III.C.l(e) is amended so that the term
"Tenant's Portion" will be forty-two and thirty-one hundredths
percent (42.31%) (58,054/137,222), computed on the basis of the
ratio of the Rentable Area of the Leased Premises to the Rentable
Area of the Buildings.  This amended Tenant's Portion shall apply
throughout the Lease.

       2.  Notices.  Paragraph X.G. of the Lease is hereby
deleted in its entirety and replaced with the following new
section:

       "X.G.  Notices. Except as otherwise provided in this
       Lease, any requirement for a notice, demand or request
       under this Lease will be satisfied by a writing (a) hand
       delivered with receipt; (b) mailed by United States
       registered or certified mail or Express Mail, return
       receipt requested, postage prepaid; or (c) sent by Federal
       Express or any other nationally recognized overnight
       courier service, and addressed: (i) if to Landlord, c/o
       Manekin Corporation, 7470 New Technology Way, Frederick,
       Maryland 21703, with copies to: Manekin Corporation, 7165
       Columbia Gateway Drive, Columbia, Maryland 21046,
       Attention: General Counsel and to Ann Clary Gordon,
       Esquire c/o Shapiro and Olander, 36 South Charles Street,
       Baltimore, Maryland 21201; and (ii) if to Tenant, at the
       Leased Premises.  All notices that are sent in accordance
       with this Paragraph X.G. will be deemed received by the
       other party on the earliest of the following applicable
       time periods: (a) three business days after being mailed
       in the aforesaid manner; (b) the date the return receipt
       is executed; or, (c) the date delivered as documented by
       the overnight courier service or the hand delivery
       receipt.  All rental payments and other charges payable
       by Tenant under this Lease will be delivered to Landlord
       at 7165 Columbia Gateway Drive, Columbia, Maryland 21046,
       Attention: Accounting Department.  Either party may
       designate a change of address by written notice to the
       other party."
       
       3.  Amendment.  As of and after the date hereof, the Lease
shall be amended and in full force and effect in such respects as
are set forth in this Amendment, and all other provisions, terms,
conditions and riders of and to the Lease shall in all respects
remain in full force and effect as set forth in the Lease.

       4.  Reaffirmation.  Tenant hereby reaffirms and restates,
and agrees to be bound by the covenants, promises,
representations and agreements set forth in the Lease (except to
the extent that they are expressly superseded by this Amendment)
as if made herein.

      5. Defined Terms.  Unless otherwise defined herein or
unless the context requires a contrary meaning, all capitalized
terms used in this Amendment shall have the meanings given to
them in the Lease.

       6.  Authority.  Tenant represents and warrants to Landlord
that the Lease and this Amendment were approved by all necessary
parties, were validly executed by all necessary officers of
Tenant, and are and remain binding upon and enforceable against
Tenant in accordance with their terms, and that the name and
address of Tenant's resident agent in the State of Maryland are
The Corporation Trust Incorporated, 32 South Street, Baltimore,
Maryland 21202.

       IN WITNESS WHEREOF, Landlord and Tenant have respectively
signed this Third Amendment of Lease under seal as of the day and
year first above written, intending to be bound as of the
Effective Date.

WITNESS/ATTEST:                CLOPPER ROAD ASSOCIATES
                              By: M.O.R.M. Associates Limited
Partnership
                              By: RA & PM, Inc.
Barbara C. Slade              By:  Alton D. Fryer(SEAL)
                              Name:  Alton D. Fryer
                              Title:  Vice President
                                      LANDLORD



WITNESS/ATTEST:                 MEDIMMUNE, INC.
Jayne L. Korolkoff              By:  David LeBuhn(SEAL)
                                Name:  David LeBuhn
                                Title:  Treasurer
                                         TENANT


STATE OF MARYLAND             )
                              )  TO WIT:
COUNTY/CITY OF Frederick      )

       I HEREBY CERTIFY that on this 19th day of April, 1996,
before me, the subscriber, a Notary Public of the State of
Maryland and County/City of Frederick, personally appeared before
me Alton Fryer, Vice President, of RA & FM, Inc., a general
partner of M.O.R.M. Associates Limited Partnership, a general
partner of CLOPPER ROAD ASSOCIATES, Landlord, and s/he
acknowledged the foregoing Fourth Amendment of Lease to be the
act and deed of said joint venture.


       WITNESS my hand and notarial seal.

                                     Betty A. Frankel
                                     Notary Public
                                     Frederick Co., MD

My Commission Expires December 5, 1997.



STATE OF MARYLAND             )
                              )  TO WIT:
COUNTY/CITY OF MONTGOMERY/Gaithersburg)


       I HEREBY CERTIFY that on this 15th day of April, 1996,
before me, the subscriber, a Notary Public of the State of
Maryland and County/City of Montgomery/Gaithersburg, personally
appeared before me David LeBuhn, who acknowledged her/himself to
be the Treasurer of MEDIMMUNE, INC., Tenant and she/he
acknowledged the foregoing Fourth Amendment of Lease to be the
act and deed of said corporation.

       WITNESS my hand and notarial seal.


                                     Carol A. Iorio
                                     Notary Public


My Commission Expires:  July 11, 1998




                                                  EXHIBIT 10.62
                                
                    FOURTH AMENDMENT OF LEASE

          THIS FOURTH AMENDMENT OF LEASE (this "Amendment") is
made this 3rd day of October, 1996 (the "Effective Date") by and
between CLOPPER ROAD ASSOCIATES, a Maryland joint venture
("Landlord"), and MEDIMMUNE, INC., a Delaware corporation
("Tenant").

                      EXPLANATORY STATEMENT

     A.   Landlord and Tenant entered into a Lease Agreement
dated February 14, 1991 (the "Original Lease"), whereby Tenant
agreed to lease from Landlord Forty Thousand Eight Hundred Forty-
Three (40,843) square feet (the "Original Leased Premises") in
the building (the "Building") known as Building D, located at
35 West Watkins Mill Road, in the Bennington Corporate Center in
Gaithersburg, Maryland.

     B.   Landlord and Tenant entered into a First Amendment of
Lease dated June 8, 1993 (the "First Amendment"), pursuant to
which Building D was expanded and the square footage of the
Original Leased Premises was increased by the amount of such
expansion (the "Expansion Space") (collectively, the Original
Leased Premises and the Expansion Space shall be hereinafter
referred to as the "Expanded Leased Premises"). Certain other
changes were also made to the Original Lease as a result of the
First Amendment.

     C.   Landlord and Tenant entered into a Second Amendment of
Lease dated June 30, 1993 (the "Second Amendment"), pursuant to
which the square footage of the Expanded Leased Premises was
increased by adding space (the "Second Expansion Space") in
Building B located at 25 West Watkins Mill Road in the Bennington
Corporate Center in Gaithersburg, Maryland (collectively, the
Original Leased Premises, the Expansion Space and the Second
Expansion Space are hereinafter referred to as the "Leased
Premises"); the Rent payable was adjusted, and certain other
changes were made to the Original Lease.

     D.   Landlord and Tenant entered into a Third Amendment of
Lease dated April 15, 1996, but effective as of January 1, 1995
(the "Third Amendment") to adjust square footages, percentages
and addresses set forth in the Original Lease as amended.

     E.   The Original Lease and the First, Second and Third
Amendments are herein collectively referred to as the "Lease."

     F.   As a result of the termination of a lease for space
adjoining the portion of the Leased Premises in Building B,
Landlord and Tenant desire to expand the Leased Premises in
Building B, adjust the square footages and percentages in the
Lease, and modify certain other provisions of the Lease, as more
specifically set forth below.

     NOW, THEREFORE, in consideration of the Explanatory
Statement, which is deemed a substantive part of this Fourth
Amendment, the covenants of the parties herein and in the Lease
and other good and valuable consideration, the receipt and
adequacy of which are hereby acknowledged, Landlord and Tenant
hereby agree as follows:

     1.   Effective Date of Fourth Amendment. From and after the
date of this Fourth Amendment, the Lease shall be amended as set
forth below.

     2.   Capitalized Terms. All capitalized terms in this Fourth
Amendment shall have the same meanings as those in the Lease,
unless specifically set forth otherwise herein.

     3.   VAD Space.  Landlord hereby leases to Tenant, and
Tenant hereby leases from Landlord, in addition to the Leased
Premises, approximately Eleven Thousand Four Hundred Fifty-Five
(11,455) rentable square feet in Building B (the "VAD Space").
The VAD Space is shown more particularly on Exhibit A attached
hereto and made a part hereof.

     4.   Condition of VAD Space.  The Tenant hereby accepts the
VAD Space in "AS-IS" condition, subject to the VAD Space
Construction as described below and subject to Landlord's duties
otherwise provided herein.

     5.   VAD Space Construction.

          a. VAD Space Plans. Landlord shall cause the tenant
improvements for the VAD Space as defined below (the "VAD Space
Construction" ) to be constructed. Landlord shall provide all
work, labor and materials in support of the VAD Space
Construction in accordance with the plans and specifications for
the VAD Space (the "VAD Space Plans"), which VAD Space Plans have
been approved and initialed by the parties. The VAD Space Plans
are described more fully on Exhibit B attached hereto and made a
part hereof. Tenant may occupy the VAD Space during the VAD Space
Construction; provided that Tenant shall cooperate with Landlord
and Landlord's employees, contractors and subcontractors to
ensure that Tenant's occupancy shall not interfere with the VAD
Space Construction.

          Landlord shall contribute a maximum of Eighty-Five
Thousand Nine Hundred Twelve Dollars and Fifty Cents ($85,912.50)
("Landlord's Contribution") toward the cost of the VAD Space
Construction. If the cost of such Construction exceeds Landlord's
Contribution, then Tenant shall pay the excess cost to Landlord
within thirty (30) days of receipt of an invoice or invoices
therefor from Landlord.

          b.  Change Orders. Any Tenant-generated change orders
to the VAD Space Plans shall be approved by Landlord, which
approval shall not be unreasonably withheld or delayed. If the
cost of the VAD Space Construction is increased due to any one or
more such change orders, Tenant shall pay Landlord such increased
cost within thirty (30) days of Tenant's receipt of an invoice
therefor from Landlord.

          c. Landlord's VAD Space Warranty. At the termination of
Landlord's VAD Space Warranty Period (as defined below), Landlord
hereby agrees to and will assign to Tenant, to the extent they
are assignable, any and all written warranties and guarantees
from Landlord's contractors, subcontractors and suppliers of any
materials and labor to the VAD Space, for that portion, if any,
of the Lease Term that such warranties and guarantees are in
effect. Landlord hereby warrants ("Landlord's VAD Space
Warranty") to Tenant that Landlord will be responsible for a
period ("Landlord's VAD Space Warranty Period" ) of one (1) year
from the VAD Space Commencement Date (as defined below) to repair
or to have repaired all defects in the VAD Space Construction, to
the extent such defects are not caused by the negligence of
Tenant or any of its agents, servants, employees or contractors
(in which event such defects will be repaired at Tenant's sole
cost). To the extent that Landlord is obligated to make repairs
pursuant to Landlord's VAD Space Warranty, Tenant will be
relieved during Landlord's VAD Space Warranty Period of the
obligations imposed upon it pursuant to this Fourth Amendment to
make or pay for such repairs to the VAD Space. Tenant agrees to
and will give Landlord prompt notice of the need for any such
repairs.

     6.   Construction Provisions of Original Leased Premises Not
Applicable to Expansion Space. Article I.B of the Original Lease,
Paragraphs 4 through 7 of the First Amendment, and Paragraph 5 of
the Second Amendment shall not apply to the VAD Space, except as
specifically set forth in this Fourth Amendment.

     7.   Term of VAD Space Lease.  The VAD Space Lease Term will
commence on the VAD Space Commencement Date, as defined below,
and will end on the last day of the Lease Term.

          a.   Cancellation Option. Paragraph II.B.(1)
(Acquisition Event Option) of the Original Lease, as amended by
the First and Second Amendments, shall apply to the VAD Space.

               Paragraph II.B(2) and (3) of the Lease shall not
apply to the VAD Space.

               The third paragraph of Paragraph 8 of the Second
     Amendment shall not apply to the VAD Space.

               In addition to Tenant's rights under Paragraph
     II.B of the Lease as amended hereunder, Tenant shall have
     the right to terminate this Lease with respect to the VAD
     Space  only (for purposes of this Paragraph 7 only,
     termination of the Lease shall be deemed to be termination
     of the Lease with respect to the VAD Space only) at any time
     from and after June 30, 1998 through and including November
     30, 2001, upon at least six (6) months' prior written notice
     to Landlord, which notice may be delivered to Landlord at
     any time from and after December 30, 1997 through and
     including May 30, 2001. If Tenant exercises its right to
     terminate this Lease under this Paragraph 7, Tenant shall
     pay Landlord by certified or bank cashier's check made
     payable to Landlord, or at Landlord's option, by wire
     transfer of immediately available funds to Landlord's
     account, on or before the month immediately preceding the
     proposed date of Lease termination in Tenant's notice, a fee
     (the "Fee") of Ninety Thousand Dollars ($ 90,000.00) and as
     of the Lease termination date hereunder, Tenant shall have
     cured any uncured monetary default under the Lease,
     including any late fees due thereon, without any obligation
     to pay any accelerated Rent.  Notwithstanding the
     immediately preceding sentence, the Fee shall be reduced by
     One Thousand Seven Hundred Dollars ($1,700.00) per month
     commencing on June 30, 1998. If Tenant's termination of the
     Lease under this Paragraph is effective on November 30,
     2001, Tenant shall owe no Fee upon termination of the Lease
     hereunder.

               The fourth paragraph of Paragraph 8 of the Second
Amendment shall apply to the VAD Space and shall be amended by
striking the first sentence thereof and substituting the
following:

          "Landlord shall provide to the Tenant not later
      than thirty (30) days before (a) the last day of the
      Second Expansion Space Lease Term pursuant to
      Tenant's notice of termination under this Paragraph
      (the "Second Expansion Space Termination Date"); or
      (b) the date of termination of the Lease set forth in
      Tenant's notice to Landlord with respect to the VAD
      Space (the "VAD Space Termination Date") (the term
      "Termination Date" shall refer to the VAD Space or
      Second Expansion Space Termination Date, as
      applicable), a termination rent statement (the
      "Termination Rent Statement"), which Termination Rent
      Statement shall set forth through the Termination
      Date all then-uncured monetary defaults with respect
      to Basic Annual Rent, including any previously-billed
      and unpaid late fees due on any and all such late
      payments of Basic Annual Rent, and all Basic Annual
      Rent which is then unpaid or which will be payable
      under the Lease through and including the Termination
      Date."
      
           b.  VAD Space Commencement Dates.
 
                (i) The VAD Space Commencement Date for Phase I
 shall be the date that (i) Phase I of the VAD Space
 Construction, as shown on Exhibit A, is substantially complete,
 as certified to Tenant by Landlord's architect for the VAD
 Space Construction; (ii) Landlord has obtained a temporary
 certificate of occupancy and all other licenses and permits
 required with respect to construction-related issues only, for
 Phase I of the VAD Space Construction; and (iii) the lease
 between Landlord and VAD for the VAD Space has been terminated
 pursuant to a fully-executed Termination of Lease Agreement
 between VAD and Landlord.  (Landlord and Tenant agree that
 Landlord shall use best efforts to obtain such a Termination of
 Lease Agreement by no later than 6 p.m. on Friday, September
 13, 1996.) The VAD Space Commencement Date for Phase I shall be
 pushed back one (1) day for each day that the VAD Space
 Construction for Phase I is delayed due to (i) Tenant-generated
 change orders to the VAD Space Plans; (ii) delays of any nature
 whatsoever caused by Tenant; and/or (iii) Tenant negligence or
 willful misconduct. Landlord shall give Tenant written notice
 of the anticipated VAD Space Commencement Date for Phase I on
 or about seven (7) days before such Date. Upon the occurrence
 of the VAD Space Commencement Date for Phase I, Landlord and
 Tenant shall execute a written statement setting forth such
 Date.
 
                 (ii) The VAD Space Commencement Date for Phase
 II shall be the date that Phase II of the VAD Space
 Construction, as shown on Exhibit A, is substantially complete,
 as certified to Tenant by Landlord's architect for the VAD
 Space Construction, and the date that Landlord has obtained a
 final certificate of occupancy and all other licenses and
 permits required with respect to construction-related issues
 only, for Phase II of the VAD Space Construction. The VAD Space
 Commencement Date for Phase II shall be pushed back one (1) day
 for each day that the VAD Space Construction for Phase II is
 delayed due to (i) Tenant-generated change orders to the VAD
 Space Plans; (ii) delays of any nature whatsoever caused by
 Tenant; and/or (iii) Tenant negligence or wilful misconduct.
 Landlord shall give Tenant written notice of the anticipated
 VAD Space Commencement Date for Phase II on or about seven (7)
 days before such Date. Upon the occurrence of the VAD Space
 Commencement Date for Phase II, Landlord and Tenant shall
 execute a written statement setting forth such Date.
 
           c.  Possession of VAD Space.  This Fourth Amendment
 will remain fully effective and Tenant may not cancel or
 rescind it due to late possession, regardless of when
 possession is actually delivered. Moreover, in no event will
 Landlord be liable to Tenant for damages, if any, sustained by
 Tenant as a result of Landlord's delay in delivering the VAD
 Space, except damages sustained solely as a direct result of
 Landlord's gross negligence or willful misconduct.
 
           d.  Acceptance of VAD Space.  Upon Landlord's
 delivery of possession of the VAD Space to Tenant, Tenant will
 be deemed to have accepted the VAD Space, subject to Landlord's
 duties otherwise provided herein.
 
      8.  Basic Annual Rent for VAD Space.
 
           a.  Amount of Basic Annual Rent for VAD Space. Basic
 Annual Rent for the VAD Space shall equal One Hundred Forty-Six
 Thousand Fifty-One Dollars and Twenty-Five Cents ($146,051.25)
 per annum, payable in equal monthly installments of Twelve
 Thousand One Hundred Seventy Dollars and Ninety-Four Cents
 ($12,170.94); provided, however, that for the period from the
 VAD Space Commencement Date for Phase I through the VAD Space
 Commencement Date for Phase II, the applicable monthly
 installment of Basic Annual Rent shall equal Six Thousand
 Eighty-Five Dollars an Forty-Seven Cents ($6,085.47). Payment
 of the first monthly installment hereunder shall commence on
 the VAD Space Commencement Date for Phase I; provided that if
 payment commences on a date that is not the first day of a
 month, then payment shall be pro-rated for the  partial  first
 month  in  which  payment commences. Basic Annual Rent shall
 increase once annually on December 1, 1997 and on every
 December 1 thereafter during the Lease Term at a fixed rate of
 three percent (3%) per year.
 
           b.  Payment of Basic Annual Rent for VAD Space.  The
 above amounts of Basic Annual Rent for the VAD Space shall be
 paid at the time and in addition to the payment of Basic Annual
 Rent for the Leased Premises, and otherwise in the manner set
 forth in Article III.B of the Lease.
 
           c.  Security Deposit. There shall be no Security
 Deposit required hereunder for the VAD Space.
 
      9.   Adjustments to Square Footages and Percentages
 
           a.  Paragraph III.C(l)(c)  of the Lease shall be
 amended so that the term "Rentable Area of the Leased Premises"
 shall be deemed to be Sixty-Nine Thousand Five Hundred Nine
 (69,509) square feet rather than Fifty-Eight Thousand Fifty-
 Four (58,054) square feet so that the term includes the VAD
 Space.  This amended square footage number shall apply
 throughout the Lease to all references to the square footage of
 the Leased Premises.   However, the  second  through  final
 sentences  of  Paragraph III.C(l)(c) of the Lease, as amended
 by this Fourth Amendment, shall not apply to the VAD Space.
 There shall be no certification required of the gross Rentable
 Area of the VAD Space.
 
           b.  Paragraph III.C(l)(e) of the Lease shall be
 amended as of the VAD Space Commencement Date so that the term
 "Tenant's Portion (with respect  to  the  payment  of  Common
 Area Expenses,  Taxes  and Insurance)" will be Fifty and Sixty-
 Five One Hundredths Percent  (50.65%) rather  than Forty-Two
 and Thirty-One One Hundredths Percent (42.31%), so that the
 term includes the VAD Space. This amended Tenant's Portion
 shall apply throughout the Lease.
 
           c.  The estimated amounts set forth in Paragraph
 III.C(2) (a) and (b) of the Lease shall be amended as of the
 VAD Space Commencement Date by  adding  thereto the  estimated
 amounts  of  such Taxes, Insurance  and  Common  Area  Expenses
 for  the VAD  Space. Therefore,  commencing  on the VAD Space
 Commencement Date, Tenant  shall  pay  to Landlord,  in
 addition to the amounts set  forth  in the Lease sections
 listed above, with and at the same time as the monthly payments
 of Basic Annual Rent, the following amounts with respect to the
 VAD Space:
 
                (i)   One Thousand Twenty-One Dollars and Forty
 Cents  ($1,021.40) per  month  as  one-twelfth  of  Tenant's
 estimated Portion of Common Area Expenses, which amount
 includes One Hundred Forty-Three Dollars and Nineteen Cents
 ($143.19) per month as one-twelfth of Tenant's estimated
 Portion of the Insurance Costs.  The limitation on increases in
 Common Area Expenses under the Lease shall apply to Tenant's
 Portion of Common Area Expenses for the VAD Space, except that
 the Common Area Expenses for the VAD Space for the first Lease
 Year shall not be limited in any way.
 
                (ii)   One Thousand Four Hundred Forty-One
 Dollars and Forty-Two Cents ($1,441.42) per month as
 one-twelfth of Tenant's estimated Portion of Taxes.
 
      10. Use Restrictions and Rules. Paragraph IV.A of the
 Original Lease shall apply to the VAD Space.
 
      11. Improvements by Tenant.  Subsection (i) of the second
 paragraph of Paragraph IV.B of the Lease shall be stricken in
 its entirety and replaced with the following:
 
           "(i)  the aggregate cost of the same does not exceed
           One Hundred Thousand Dollars ($100,000) with respect
           to the Expanded Leased Premises, Fifty Thousand
           Dollars ($50,000) with respect to the Second
           Expansion Space, or Fifty Thousand Dollars ($50,000)
           with respect to the VAD Space . . ."
 
      12. Insurance.  Paragraph IV.E of the Original Lease and
 shall apply to the VAD Space.
 
      13. Damage and Destruction.  Article VI of the Lease shall
 be amended by adding the underlined language to the last
 paragraph thereof and adding a new paragraph at the end thereof
 as follows:
 
           Notwithstanding the preceding three (3) paragraphs of
 this Article VI, if Landlord or Tenant has the right to
 terminate the Lease pursuant to this Article VI due to damage
 or destruction to the Expanded Leased Premises only (excluding
 the Second Expansion Space and VAD Space) by fire, other
 casualty, or any other cause (except condemnation), then
 Landlord or Tenant automatically shall have the right pursuant
 to this Article VI to terminate the Lease with respect to the
 Second Expansion Space and VAD Space, regardless of whether the
 Second Expansion Space and/or the VAD Space has suffered any
 damage or destruction.  In addition to the termination rights
 with respect to the Second Expansion Space and VAD Space in the
 immediately preceding sentence, Tenant shall have the right to
 terminate the Lease with respect to the Second Expansion Space
 and VAD Space within one (1) year of the date of damage or
 destruction to the Expanded Leased Premises, upon thirty (30)
 days' prior written notice to Landlord. In the event of such
 termination, the same conditions shall apply as are set forth
 in Article VI. If Landlord or Tenant has the right to terminate
 the Lease pursuant to this Article VI due to damage or
 destruction to the Second Expansion Space and/or VAD Space only
 (excluding the Expanded Leased Premises), Landlord or Tenant
 shall not have any right to terminate the Lease with respect to
 the Expanded Leased Premises. If Landlord or Tenant duly
 terminates the Lease under Article VI with respect to the
 Second Expansion Space and/or VAD Space, the Lease shall remain
 in full force and effect with respect to the Expanded Leased
 Premises, and the Second Expansion Space and/or VAD Space shall
 be stricken from the definition of "Leased Premises" under the
 Lease.  Upon such damage or destruction to the Second Expansion
 Space and/or the VAD Space, the parties agree to enter into an
 amendment to the Lease setting forth the reduced Leased
 Premises and other related changes to the Lease, including,
 without limitation, reduction of Basic Annual Rent and Tenant's
 Portion of Common Area Expenses, Taxes and Insurance.
 
           Notwithstanding anything set forth above in this
 Article VI, if Landlord or Tenant has the right to terminate
 the Lease pursuant to this Article VI due to damage or
 destruction to one or the other of the Second Expansion Space
 or the VAD Space, but not both Spaces, then Landlord or Tenant
 shall not have the right to terminate the Lease under this
 provision with respect to the non-damaged Space in Building B,
 or with respect to the Expanded Leased Premises.
 
      14. Condemnation.  The last sentence of the second
 paragraph of Article VII of the Lease shall only apply to the
 Expanded Leased Premises, and shall not apply to the Second
 Expansion Space and VAD Space.  In addition, Article VII of the
 Lease shall be amended by adding the underlined language to the
 last paragraph thereof and adding a new paragraph at the end
 thereof as follows:
 
           Notwithstanding the preceding two (2) paragraphs of
 this Article VII, if Landlord or Tenant has the right to
 terminate the Lease pursuant to this Article VII due to taking
 or condemnation of the Expanded Leased Premises only
 (excluding the Second Expansion Space and VAD Space), then
 Landlord or Tenant automatically shall have the right pursuant
 to this Article VII to terminate the Lease with respect to the
 Second Expansion Space and VAD Space, regardless of whether the
 Second Expansion Space and/or the VAD Space has been condemned
 in whole or in part.  However, if Landlord or Tenant has any
 right to terminate the Lease pursuant to this Article VII due
 to condemnation or taking of the Second Expansion Space and/or
 VAD Space only (excluding the Expanded Leased Premises),
 Landlord or Tenant shall not have the right to terminate the
 Lease with respect to the Expanded Leased Premises. If Landlord
 or Tenant duly terminates the Lease under Article VII with
 respect to the Second Expansion Space and/or VAD Space, the
 Lease shall remain in full force and effect with respect to the
 Expanded Leased Premises, and the Second Expansion Space and/or
 VAD Space shall be stricken from the definition of "Leased
 Premises" under the Lease.  Upon such condemnation of the
 Second Expansion Space and/or VAD Space, the parties agree to
 enter into an amendment to the Lease setting forth the reduced
 Leased Premises and other related changes to the Lease,
 including, without limitation, a reduction of Basic Annual Rent
 and Tenant's Portion of Common Area Expenses, Taxes and
 Insurance.
 
           Notwithstanding anything set forth above in this
 Article VII, if Landlord or Tenant has the right to terminate
 the Lease pursuant to this Article VII due to taking or
 condemnation of one or the other of the Second Expansion Space
 or the VAD Space, but not both Spaces, then Landlord or Tenant
 shall not have the right to terminate the Lease under this
 provision with respect to the non-condemned Space in Building
 B, or with respect to the Expanded Leased Premises.
 
      15. Parking. Paragraph X.O of the Lease shall be amended
 by adding Tenant's right to the non-exclusive use of an
 additional three (3) parking spaces per one thousand (1,000)
 square feet of the VAD Space for a total of Thirty-Four (34)
 parking spaces. Therefore, in addition to the 214 non-exclusive
 and 15 exclusive parking spaces set forth in the Lease, Tenant
 shall have the non-exclusive use of 34 additional parking
 spaces in the front and rear of Building B. If Tenant's loading
 requirements or other requirements in the rear of Building B
 are such that there is room for additional parking, then Tenant
 shall have the non-exclusive use of additional parking spaces
 in the rear of Building B.
 
      16. Rights of First Offer. The provisions of Paragraph 18
 of the First Amendment shall be amended to the extent, and only
 to the extent, set forth below:
 
           a.  (i) Tenant shall have the right of first offer
 (the "Hitachi First Offer Right"), on the terms and conditions
 hereinafter set forth, to lease that portion of Building B
 contiguous to the VAD Space (the "Hitachi First Offer Space"),
 as shown on Exhibit A, containing approximately Three Thousand
 Three Hundred Seventy (3,370) rentable square feet, and as of
 the date first set forth above, occupied by Nissei Sangyo
 America, Ltd. ("Hitachi") under a lease between Landlord and
 Hitachi (the "Hitachi Lease") at such time as such Space
 becomes available after its initial leasing by Hitachi. Tenant
 shall have the right to lease the Hitachi First Offer Space at
 the then-current VAD Space Basic Annual Rent, with a tenant
 improvement allowance of Seven Dollars and Fifty Cents ($7.50)
 per square foot.
 
                (ii) Tenant shall have the right of first offer
 (the "Bodymasters First Offer Right"), on the terms and
 conditions hereinafter set forth, to lease that portion of
 Building B contiguous to the VAD Space (the "Bodymasters First
 Offer Space"), as shown on Exhibit A, containing approximately
 Ten Thousand Seventy-Three (10,073) rentable square feet,  and
 occupied as of the Effective Date by Healthco Fitness
 ("Bodymasters") under a lease between Landlord and Bodymasters
 (the "Bodymasters Lease"). Tenant shall have the Bodymasters
 First Offer Right at such time as the Bodymasters First Offer
 Space becomes available, subject to any renewal options in the
 Bodymasters Lease. Tenant shall have the right to lease the
 Bodymasters First Offer Space at the then-current market rent
 (as determined below), including, without limitation, then-
 current market increases of basic annual rent for each lease
 year of such lease. Market rent shall be determined based, in
 part, upon a tenant improvement allowance for the Bodymasters
 First Offer Space agreed upon by Landlord and Tenant.
 
           Landlord and Tenant shall work together in good faith
 to determine market rent for the Bodymasters First Offer Space,
 based on the mutually-agreed tenant improvement allowance,
 within ten (10) days after Landlord receives Tenant's First
 Offer Notice (as defined below). However, if Landlord and
 Tenant cannot agree on a market rent within such ten (10)-day
 period, after diligent, good faith efforts, then market rent
 for the Bodymasters First Offer Space, taking into
 consideration the tenant improvement allowance established by
 Landlord and Tenant, shall be determined by a three-broker
 method conducted as follows:
 
                     (1) Within five (5) days after Landlord and
 Tenant shall have failed to agree upon a market rent during the
 ten (10)-day period set forth above, Landlord and Tenant shall
 give written notice to the other that each, at its own expense,
 has hired and appointed as a broker, a disinterested person of
 recognized competence and professional experience as a broker
 of comparable commercial and industrial real estate in the
 Baltimore-Washington Metropolitan Area. The two (2) brokers
 thus appointed shall diligently work together for fifteen (15)
 days after their appointment to determine the market rent for
 the Bodymasters First Offer Space. Landlord and Tenant shall
 each be entitled to present evidence and argument to the two
 (2) brokers. If the two brokers cannot agree on such a market
 rent within such fifteen (15)-day period, they shall each
 prepare a written report setting forth what each believes the
 market rent to be and the supporting data therefor. They shall
 then appoint a third broker who shall also be a disinterested
 person of recognized competence and professional experience as
 a broker of comparable commercial and industrial real estate in
 the Baltimore-Washington Metropolitan Area (the "Broker").  In
 the event that the two (2) brokers appointed as aforesaid shall
 be unable to agree, within ten (10) days after their failure to
 agree on a market rent, on the appointment of the Broker, they
 shall give written notice of such failure to the parties
 hereto, and the parties shall request that such appointment be
 made by the then President of the Maryland/Washington, D.C.
 Chapter of the Society of Industrial and Office Realtors (or
 any organized successor thereto) within thirty (30) days after
 such request. The Broker shall, as promptly as possible, but in
 no event more than thirty (30) days after the date of his or
 her selection, determine the market rent for the Bodymasters
 First Offer Space, without having access to the reports of the
 first two (2) brokers. Landlord and Tenant shall each be
 entitled to present evidence and argument to the Broker. Once
 the Broker has determined the market rent, the final market
 rent shall be determined as follows: (a) if the Broker's
 determination is higher than that of both of the first two
 brokers, then the higher market rent as determined by the first
 two brokers shall be conclusive and binding on Landlord and
 Tenant; (b) if the Broker's determination is lower than that of
 both of the first two brokers, then the lower market rent as
 determined by the first two brokers shall be conclusive and
 binding on Landlord and Tenant; and (c) if the Broker's
 determination is between that of the first two brokers, then
 the Broker's determination shall be conclusive and binding on
 Landlord and Tenant.
 
                     (2) After the market rent has been
 determined by the two (2) brokers, or determined by the method
 involving the Broker, as applicable, written notice shall
 immediately be given to Landlord and Tenant stating the
 determination(s), and Landlord and Tenant shall be furnished a
 copy of such determination(s) signed by the decision-maker(s).
 If the Broker is utilized, Landlord and Tenant shall review all
 three (3) determinations to arrive at the final market rent
 pursuant to the method set forth above. Landlord and Tenant
 shall each pay one-half (1/2) of the costs of the Broker, if
 applicable.
 
                (iii)  Tenant shall  exercise either of or both
 its First Offer Rights only upon written notification to
 Landlord of Tenant's exercise of any such First Offer Right
 (the "First Offer Notice"). Such First Offer Notice must be
 given to Landlord within five (5) business days after Tenant
 receives Landlord's written notification to Tenant ("Landlord's
 Offer") of the termination of the Hitachi and/or Bodymasters
 Lease, as applicable.
 
                (iv)  Time is of the essence with respect to
 Tenant's exercise of its rights under this Subparagraph, and
 Tenant acknowledges that Landlord requires strict adherence to
 the requirement that the applicable First Offer Notice be
 timely made and in writing. Within ten (10) days after the
 market rent for the Bodymasters First Offer Space has been
 determined as provided above, Tenant shall have the right, by
 written notice to Landlord, to rescind its exercise of its
 Bodymasters First Officer Notice, as applicable.
 
                (v)  In the event Tenant fails to provide
 Landlord with the applicable First Offer Notice within the five
 (5) day period set forth in Subparagraph 16(a)(iii) above,
 Landlord shall be free to offer said Hitachi or Bodymasters
 First Offer Space to a third party on any terms whatsoever, and
 the applicable First Offer Right shall be null and void and of
 no further force and effect.
 
                (vi)  In the event that either one or both of
 the First Offer Rights are exercised by Tenant, the rent
 applicable to the applicable First Offer Space as set forth
 above in this Paragraph 16, shall be payable in equal monthly
 installments (and, where applicable, fractions thereof), at the
 times and in the manner as provided with respect to, and in
 addition to, the monthly installments of the Basic Annual Rent
 as set forth in Article III.B. of the Lease.
 
           b.  Notwithstanding any other provision of this
 Paragraph 16, the following provisions shall apply to the First
 Offer Rights and to Tenant's lease, if any, of the applicable
 First Offer Space.
 
                (i)  Tenant shall not be entitled to exercise
 the rights accorded to Tenant in Subparagraph 16(a), unless on
 the date Tenant gives Landlord notice of such exercise and on
 the applicable First Offer Space Commencement Date, as
 hereinafter defined, Tenant (for purposes of this subsection
 only, the term "Tenant" shall be deemed to be MedImmune, Inc.
 or an entity which succeeds to all or substantially all of the
 assets of MedImmune, Inc.) is in possession of the Leased
 Premises and Tenant is not in default of the Lease;
 
                (ii)  The lease by Tenant of the applicable
 First Offer Space, if any, shall commence on the date set forth
 in Landlord's Offer (the "Hitachi First Offer Space
 Commencement Date" or the "Bodymasters First Offer Space
 Commencement Date") and shall terminate on November 30, 2006,
 under and subject to the terms of this Lease (except to the
 extent modified by Landlord's Offer), with the same force and
 effect as though this Lease had originally provided for the
 rental of the Leased Premises and the applicable First Offer
 Space, except that the Basic Annual Rent applicable to the
 applicable First Offer Space shall be adjusted as set forth
 above. Notwithstanding the immediately preceding sentence,
 Tenant shall have the right to cancel the lease for the Hitachi
 First Offer Space and/or the lease for the Bodymasters First
 Offer Space on November 30, 2001 upon at least one hundred
 eighty (180) days' prior written notice. Tenant shall owe a
 penalty for canceling the leases for the Hitachi First Offer
 Space and for the Bodymasters First Offer Space equal to, with
 respect to each such lease, the unamortized portion of the
 applicable tenant improvement costs and commissions, plus an
 amount equal to three (3) months' basic annual rent then in
 effect. The tenant improvement costs under the leases for both
 the Hitachi and Bodymasters First Offer Spaces shall be
 amortized at ten and one half percent (10.5%) per annum (pro-
 rated on a monthly basis) over the term of each of the leases
 for the Bodymasters and Hitachi First Offer Space, as
 applicable. Landlord shall apply this formula to determine the
 Bodymasters and Hitachi cancellation penalties hereunder upon
 receipt of the applicable Tenant's First Offer Notice
 hereunder, and shall notify Tenant in writing of the amount of
 each such cancellation fee, and the calculations used to
 determine it, within seven (7) days of receipt of the
 applicable Tenant's First Offer Notice. If Tenant has any
 questions or concerns about such calculations, Tenant shall
 notify Landlord in writing within seven (7) days of receipt of
 Landlord's calculations, and the parties shall use diligent,
 good faith efforts to resolve all open issues promptly.
 
                (iii)  The applicable First Offer Space shall be
 delivered to Tenant in "as is" condition, unless otherwise set
 forth in Landlord's Offer.
 
                (iv)  From and after the applicable First Offer
 Space Commencement Date, all references in the Lease to the
 Leased Premises shall refer to both the area of the Leased
 Premises and of the applicable First Offer Space. Tenant's
 Portion shall be adjusted accordingly to reflect the leasing of
 the applicable First Offer Space.
 
                (v)  Except as otherwise expressly provided in
 this Paragraph 16, and after the applicable First Offer Space
 Commencement Date, all of the covenants and agreements set
 forth in the Lease, schedules and riders thereto shall apply to
 the applicable First Offer Space.
 
      17. Signage for the VAD Space. Paragraph 18 of the Second
 Amendment shall be stricken in its entirety and replaced with
 the following:
      
                "As soon as reasonably possible after Landlord
           and Tenant have approved of the location of Tenant's
           signage, and as otherwise set forth below in this
           Paragraph 17, Landlord shall construct, maintain,
           repair and/or replace for Tenant exterior signage on
           Building B displaying Tenant's name, logo, and/or any
           other insignia generally used by Tenant. All costs
           associated with maintenance, repair and replacement
           of this exterior signage shall be treated as a Common
           Area Expense. Tenant shall pay all costs associated
           with the construction of such signage within thirty
           (30) days of receipt of an invoice therefor from
           Landlord. This signage shall be of identical size,
           color and material as the size, color and material
           used for similar signage on Building D, and this
           signage on Building B shall be in such location as is
           reasonably requested by Tenant and approved in
           advance by Landlord, in Landlord's sole discretion."
 
      18. Tenant  Authorization.    Tenant  represents  and
 warrants to Landlord that this Fourth Amendment has been
 validly authorized and is executed by an authorized officer of
 Tenant and that its terms are binding upon and enforceable
 against Tenant in accordance herewith.
 
      19. Amendment. As of and after the date hereof, the Lease
 shall be amended and in full force and effect in such respects
 as are set forth in this Fourth Amendment, and all other
 provisions, terms, conditions and riders of and to the Lease
 shall in all respects remain in full force and effect as set
 forth in the Lease.
 
      20. Reaffirmation. Tenant hereby reaffirms and restates,
 and agrees to be bound by, the covenants, promises,
 representations and agreements set forth in the Lease (except
 to the extent that they are expressly superseded by this Fourth
 Amendment) as if made herein.
 
      21. Authority. Tenant represents and warrants to Landlord
 that the Lease and this Fourth Amendment were approved by all
 necessary parties, were validly executed by all necessary
 officers of Tenant, and are and remain binding upon and
 enforceable against Tenant in accordance with their terms, and
 that the name and address of Tenant's resident agent in the
 State of Maryland are The Corporation Trust Incorporated, 32
 South Street, Baltimore, Maryland 21202.
 
      IN WITNESS WHEREOF, Landlord and Tenant have respectively
 signed this Fourth Amendment of Lease under seal as of the day
 and year first above written, intending to be bound as of the
 Effective Date.
 
 WITNESS/ATTEST:              CLOPPER ROAD ASSOCIATES
 
                               By: M.O.R.M. Associates Limited
                                    Partnership
 
                                    By: RA & FM, Inc.
 
                              By:  Alton D. Fryer(SEAL)
                                    Name: Alton D. Fryer
                                    Title: Vice President
 LANDLORD
 
 WITNESS/ATTEST:              MEDIMMUNE, INC.
 
 David LeBuhn                 By:  David M. Mott(SEAL)
                               Name:  David M. Mott
                               Title:  President
                                                   TENANT
 
 STATE OF MARYLAND            )
                               )   TO WIT:
 COUNTY OF FREDERICK          )
 
      I HEREBY CERTIFY that on this 4th day of October, 1996,
 before me, the subscriber, a Notary Public of the State of
 Maryland and County/City of Baltimore, personally appeared
 before me Alton D. Fryer, Vice President, of RA & FM, Inc., a
 general partner of M.O.R.M. Associates Limited Partnership, a
 general partner of CLOPPER ROAD ASSOCIATES, Landlord, and s/he
 acknowledged the foregoing Fourth Amendment of Lease to be the
 act and deed of said joint venture.
 
      WITNESS my hand and notarial seal.
 
                                    Mary Gail Peters
                                    Notary Public
 
 My Commission Expires:  April 1, 1998
                                    [Notaries cont'd]
                                    
 
 
 STATE OF MARYLAND            )
                               )   TO WIT:
 COUNTY/CITY OF MONTGOMERY    )
 
      I HEREBY CERTIFY that on this 3rd  day of October 1996,
 before me, the subscriber, a Notary Public of the State of
 Maryland and County/City of Montgomery, personally appeared
 before me David M. Mott, who acknowledged her/himself to be the
 President and Chief Operating Officer of MEDIMMUNE, INC.,
 Tenant and she/he acknowledged the foregoing Fourth Amendment
 of Lease to be the act and deed of said corporation.
 
      WITNESS my hand and notarial seal.
 
                                    Carol A. Iorio
                                    Notary Public
 
 My Commission Expires: July 11, 1998
                                
                            EXHIBIT A
                    Description of VAD Space
                                
                                
                            EXHIBIT B
                         VAD Space Plans
                                



                                                  EXHIBIT 10.63
                                
                    FIFTH AMENDMENT OF LEASE
                                
     THIS FIFTH AMENDMENT OF LEASE (this ("Amendment") is made
this 3rd  day of October, 1996 (the "Effective Date") by and
between CLOPPER ROAD ASSOCIATES, a Maryland joint venture
("Landlord"), and MEDIMMUNE, INC., a Delaware corporation
("Tenant").

                      EXPLANATORY STATEMENT
                                
     A. Landlord and Tenant entered into a Lease Agreement dated
February 14, 1991 (the "Original Lease"), whereby Tenant agreed
to lease from Landlord forty thousand eight hundred forty-three
(40,843) square feet (the "Original Leased Premises") in the
building (the "Building") known as Building D, located at 35 West
Watkins Mill Road, in the Bennington Corporate Center in
Gaithersburg, Maryland.

     B. Landlord and Tenant entered into a First Amendment of
Lease dated June 8,1993 (the "First Amendment"), pursuant to
which Building D was expanded and the square footage of the
Original Leased Premises was increased by the amount of such
expansion (the "Expansion Space") (collectively, the Original
Leased Premises and the Expansion Space shall be hereinafter
referred to as the "Expanded Leased Premises"). Certain other
changes were also made to the Original Lease as a result of the
First Amendment.

     C. Landlord and Tenant entered into a Second Amendment of
Lease dated June 30,1993 (the "Second Amendment"), pursuant to
which the square footage of the Expanded Leased Premises was
increased by adding space (the "Second Expansion Space") in
Building B located at 25 West Watkins Mill Road (collectively,
the Original Leased Premises, the Expansion Space and the Second
Expansion Space are hereinafter referred to as the "Second
Expanded Leased Premises"); the Rent payable was adjusted, and
certain other changes were made to the Original Lease, as
amended.

     D. Landlord and Tenant entered into a Third Amendment of
Lease dated April 15,1996, but effective as of January 1,1995
(the "Third Amendment") to adjust percentages and addresses set
forth in the Original Lease as amended.

     E.  Landlord and Tenant entered into a Fourth Amendment of
Leased dated September __, 1996 (the "Fourth Amendment") pursuant
to which the portion of the Second Expanded Leased Premises in
Building B was expanded by adding space adjacent thereto (the
"VAD Space")  (the "Second Expanded Leased Premises," as
expanded, is hereafter referred to as the "Third Expanded Leased
Premises"), the Rent was adjusted, and certain other changes were
made to the Original Lease, as amended.

     F. The Original Lease, the First, Second, Third and Fourth
Amendments are herein collectively referred to as the "Lease."

     G.  Landlord and Tenant now desire to expand Building D to
increase the square footage of the Third Expanded Leased
Premises, adjust the Rent payable therefor, and make certain
other changes to the Lease, all as more specifically set forth
below.

     NOW, THEREFORE, in consideration of the Explanatory
Statement, which shall be deemed a substantive part of this Fifth
Amendment, the covenants of the parties herein and in the Lease,
and other good and valuable consideration, the receipt and
adequacy of which are hereby acknowledged, Landlord and Tenant
hereby agree as follows:

          1.   Effective Date of Fifth Amendment. From and after
the date of this Fifth Amendment, the Lease shall be amended as
set forth below.

          2.   Capitalized Terms. All capitalized terms in this
Fifth Amendment shall have the same meanings as those in the
Lease, unless specifically set forth otherwise herein.

          3.   Building D Expansion Space. Landlord hereby leases
to Tenant, and Tenant hereby leases from Landlord, in addition to
the Third Expanded Leased Premises, approximately One Thousand
Seven Hundred Sixteen (1,716) rentable square feet of space,
which shall be added to Building D ("Building D Expansion Space")
(collectively, the Third Expanded Leased Premises and Building D
Expansion Space shall be deemed the "Leased Premises" ). The
Building D Expansion Space is shown more particularly on Exhibit
A attached hereto and made a part hereof.

          4.   Construction of Building D Expansion Space.

               a.   Building D Expansion Space Plans; Filing for
Building Permit. Tenant shall cause the Building D shell and
interior improvements for the Building D Expansion Space (the
"Building D Expansion Space Construction") to be constructed in
accordance with the plans and specifications for the Building D
Expansion Space (the "Building D Expansion Space Plans"). These
Plans shall be approved and initialed by the parties before
construction begins. Tenant shall provide Landlord one copy of
all such Plans, at Tenant's expense, before construction begins.

                    Tenant shall have received a building permit
from the City of Gaithersburg for the Building D Expansion Space,
and shall have provided a copy to Landlord, before Tenant shall
be authorized to begin construction under this Fifth Amendment.

               b.   Third Party as Contractor.

                    (i)       Approval and Performance. Tenant
has initially selected Riparius Construction, Inc. (the "Third
Party Contractor" ) to construct the Building D Expansion Space
shell and interior improvements. Landlord hereby approves of such
selection. Tenant will not change the Third Party Contractor from
Riparius Construction, Inc. to another party without the prior
written consent of Landlord, which consent shall not be
unreasonably withheld or delayed. The Third Party Contractor
shall provide all work, labor and materials in support of the
Building D Expansion Space Construction in accordance with the
Building D Expansion Space Plans. The Third Party Contractor
shall also perform its work in strict compliance with all laws,
rules, regulations, orders, codes and other requirements of all
governmental and quasi-governmental authorities having
jurisdiction with respect to the Building D Expansion Space
and/or the performance of the Building D Expansion Space
Construction, and shall comply with all of Landlord's reasonable
rules  and regulations provided to the Third Party Contractor.

                    (ii)      Insurance.   In addition, the Third
Party Contractor shall obtain Builder's Risk insurance naming
Landlord, Tenant and Manekin Corporation ("Manekin"), an
affiliate of Landlord, as additional insureds and public
liability insurance with limits of $1,000,000/$2,000,000 for the
Building D Expansion Space Construction and proof that it
maintains a policy of Workmen's Compensation Insurance in
accordance with  applicable  law. No later than the date of
commencement of the Building D Expansion Space Construction, the
Third Party Contractor shall provide original insurance
certificates to Landlord evidencing all such insurance policies.

                    (iii)     Manekin's Observation.  Manekin, on
behalf of Landlord, shall have the right to observe the Third
Party Contractor's work on the Building D Expansion Space
Construction. Tenant shall pay Manekin a fee (the "Fee") equal to
all of Manekin's out-of-pocket costs for such observation,
including, without limitation, the wages, salaries or other
compensation and any taxes, insurance or benefits of its
personnel performing such observation. The Fee shall not exceed
Three Thousand Dollars ($3,000). Tenant shall pay this Fee thirty
(30)days after receipt of Landlord's invoice therefor, together
with all applicable supporting documentation.

          5.   Reimbursement for Site Plan Amendment. As of the
date first set forth above, Landlord has obtained, at its sole
cost, the "Site Plan Manekin Gaithersburg Center," as revised
4/16/96 (Second Addition to Building D), as approved by the City
of Gaithersburg 4/26/96 (the "Site Plan Amendment") to allow the
Building D Expansion Space Construction. Tenant shall reimburse
Landlord for the entire cost of the Site Plan Amendment within
thirty (30) days of Tenant's receipt of an invoice therefor.

          6.   Construction Provisions of Revised Leased Premises
Not Applicable to Building D Expansion Space.  Article I.B of the
Original Lease, Paragraphs 4 through 7 of the First Amendment,
and Paragraph 5 of the Second Amendment shall not apply to the
Building D Expansion Space, except as may be specifically set
forth in this Fifth Amendment.

          7.   Term of Building D Expansion Space Lease.  The
Building D Expansion Space Lease Term will commence on the
Building D Expansion Space Commencement Date (as defined below)
and will end on the last day of the Lease Term, subject to
Paragraph 8 below. From and after the date of this Fifth
Amendment, the term "Lease Term" will include the Building D
Expansion Space Lease Term.

               a.   Building D Expansion Space Commencement
Date.  The Building D Expansion Space Commencement Date shall be
the earlier of the date that Tenant receives an approved
temporary occupancy certificate for the Building D Expansion
Space, and January 1, 1997. Upon the occurrence of the Building D
Expansion Space Commencement Date, Landlord and Tenant shall
execute a written statement setting forth such Date.

               b.   Possession of Building D Expansion Space.
This Fifth Amendment shall remain fully effective and Tenant may
not cancel or rescind it due to late delivery of the Building D
Expansion Space, regardless of when delivery actually occurs.
Moreover, in no event will Landlord be liable to Tenant for
damages, if any, sustained by Tenant as a result of any delay in
delivery of the Building D Expansion Space.

               c.   Acceptance of Expansion Space. Upon the
Building D Expansion Space Commencement Date, Tenant will be
deemed to have accepted the Building D Expansion Space.

          8.   Cancellation Options.

               Paragraph II.B of the Original Lease, as amended
by the First Amendment, and as amended by the Second Amendment
(with respect only to the Expanded Leased Premises (as defined in
the Second Amendment))  shall apply to the Building D Expansion
Space.

          9.   Basic Annual Rent for the Building D Expansion
               Space.

               a    Amount of Basic Annual Rent for Building D
Expansion Space.  Basic Annual Rent for the Building D Expansion
Space shall equal Five Thousand Five Hundred Ninety-Four Dollars
and Sixteen Cents ($5,594.16) per annum, payable in equal monthly
installments of Four Hundred Sixty-Six Dollars and Eighteen Cents
($466.18). Payment of the first monthly installment hereunder
shall commence on the Building D Expansion Space Commencement
Date; provided that if payment commences on a date that is not
the first day of a month, then payment shall be pro-rated for the
partial  first  month  in  which  payment commences. This payment
of Basic Annual Rent shall continue until August 1, 2004, upon
which date the Basic Annual Rent for the Building D Expansion
Space shall increase to Four Dollars and Forty Cents ($4.40) per
square foot of the Building D Expansion Space, for a total of
Seven Thousand Five Hundred Fifty Dollars and Forty Cents
($7,550.40) per annum, in equal monthly installments of Six
Hundred Twenty-Nine Dollars and Twenty Cents ($629.20) for the
remainder of the Lease Term. As of August 1, 2004, the Basic
Annual Rent for the Building D Expansion Space on a per-square-
foot basis shall be the same as the Basic Annual Rent for the
Expansion Space (as defined in the First Amendment), on a per-
square-foot basis.
               
               b.   Payment of Basic Annual Rent for Building D
Expansion Space.  The above amounts of Basic Annual Rent for the
Building D Expansion Space shall be paid at the time and in
addition to the payment of Basic Annual Rent for the Leased
Premises, and otherwise in the manner set forth in Article III.B
of the Lease.
               
               c.   Security Deposit. There shall be no Security
Deposit required hereunder for the Building D Expansion Space.

          10.   Adjustments to Square Footages and Percentages

               a.   In Paragraph III.(C)(1)(b) of the Lease and
throughout the Lease, the  term  "Rentable Area  of the
Buildings" will be deemed to be 138,938 square feet rather than
137,222 square feet, so that the term includes the Building D
Expansion Space. This amended square footage number shall apply
throughout the Lease to all references to the Rentable Area of
the Buildings. Finally,  the  third,  fifth  and  sixth
sentences  of  Paragraph III.C(l)(b) of the Lease, as amended by
this Fifth Amendment, will apply to the Building as expanded by
the Building D Expansion Space.

               b.   Paragraph III.C(l)(c)  of the Lease shall be
amended so that the term "Rentable Area of the Leased Premises"
shall be deemed to be 71,225 square feet rather than 69,509
square feet so that the term includes the Building D Expansion
Space.  This amended square footage number shall apply throughout
the Lease to all references to the square footage of the Leased
Premises.   However, the  second  through  final  sentences  of
Paragraph III.C(l)(c) of the Lease, as amended by this Fifth
Amendment, shall not apply to the Building D Expansion Space.
There shall be no certification required of the gross Rentable
Area of the Building D Expansion Space.

               c.   Paragraph III.C(l)(d)  of the Lease shall be
amended so that the term "Rentable Area of the Building" shall be
deemed to be 52,351 square feet rather than 50,635 square feet so
that the term includes the Building D Expansion Space.  This
amended square footage number shall apply throughout the Lease to
all references to the square footage of the Building.

               d.   Paragraph III.C(l)(e) of the Lease shall be
amended as of the Building D Expansion Space Commencement Date so
that the term "Tenant's Portion (with respect  to  the  payment
of  Common Area Expenses,  Taxes  and Insurance)" will be Fifty-
One and Twenty-Six One Hundredths Percent (51.26%)
(71,225/138,938) rather than Fifty and Sixty-Five One Hundredths
Percent (50.65%) so that the term includes the Building D
Expansion Space. This amended Tenant's Portion shall apply
throughout the Lease.

               e.   The estimated amounts set forth in Paragraph
III.C(2) (a) and (b) of the Lease shall be amended as the
Building D Expansion Space Commencement Date by  adding thereto
the estimated amounts of such Taxes, Insurance and Common  Area
Expenses for the Building D Expansion Space.  Therefore,
commencing on the Building D Expansion Space Commencement Date,
Tenant shall pay to Landlord, in addition to the amounts set
forth  in the Lease sections listed above, with and at the same
time as the monthly payments of Basic Annual Rent, the following
amounts with respect to the Building D Expansion Space:

                    (i)   One Hundred Fifty-Three Dollars
($153.00) per  month  as  one-twelfth  of  Tenant's estimated
Portion of Common Area Expenses, which amount includes Twenty-One
Dollars and Forty-Five Cents ($21.45) per month as one-twelfth of
Tenant's estimated Portion of the Insurance Costs.  The
limitation on increases in Common Area Expenses under the Lease
shall apply to Tenant's Portion of Common Area Expenses for the
Building D Expansion Space, except that the Common Area Expenses
for the Building D Expansion Space for the first Lease Year shall
not be limited in any way.

                    (ii)   Two Hundred Fifteen Dollars and Ninety-
Three Cents ($215.93) per month as one-twelfth of Tenant's
estimated Portion of Taxes.

          Notwithstanding the foregoing,  with reference to the
Tenant's Portion (estimated and actual) of Common Area Expenses,
Insurance Costs and Taxes,  the same will not be charged with
respect to the Building D Expansion Space until the Building D
Expansion Space is completed;  provided, however, that if prior
to the earlier of the date the Building D Expansion Space is
completed and tendered to Tenant, or one (1) year from the
Building D Expansion Space Commencement Date, Montgomery County,
Maryland assesses Taxes with respect to the Building D Expansion
Space, then and in such event, the Tenant's Portion with respect
to Taxes shall be increased to include the Building D Expansion
Space effective as of the effective date of Montgomery County's
assessment of Taxes with respect to the Building D Expansion
Space.

          11.  Use Restrictions and Rules. Paragraph IV.A of the
Original Lease shall apply to the Building D Expansion Space.

          12.  Improvements by Tenant.  Subsection (i) of the
second paragraph of Paragraph IV.B of the Lease shall be stricken
in its entirety and replaced with the following:

               "(i)  the aggregate cost of the same does not
               exceed One Hundred Thousand Dollars ($100,000)
               with respect to the Expanded Leased Premises,
               Fifty Thousand Dollars ($50,000) with respect to
               the Second Expansion Space, Fifty Thousand Dollars
               ($50,000) with respect to the VAD Space, or Fifty
               Thousand Dollars ($50,000) with respect to the
               Building D Expansion Space . . ."

          13.  Insurance.     Paragraph IV.E of the Original
Lease shall apply to the Building D Expansion Space.

          14.  Damage and Destruction.  Article VI of the Lease
shall be amended by adding the underlined language to the
paragraph at the end thereof as follows:

               Notwithstanding the preceding three (3) paragraphs
of this Article VI, if Landlord or Tenant has the right to
terminate the Lease pursuant to this Article VI due to damage or
destruction to the Expanded Leased Premises and Building D
Expansion Space only (excluding the Second Expansion Space and
the VAD Space) by fire, other casualty, or any other cause
(except condemnation), then Landlord or Tenant automatically
shall have the right pursuant to this Article VI to terminate the
Lease with respect to the Second Expansion Space and the VAD
Space, regardless of whether the Second Expansion Space and/or
the VAD Space has suffered any damage or destruction.  However,
if Landlord or Tenant has the right to terminate the Lease
pursuant to this Article VI due to damage or destruction to the
Second Expansion Space and/or the VAD Space only (excluding the
Expanded Leased Premises and Building D Expansion Space),
Landlord or Tenant shall not have any right to terminate the
Lease with respect to the Expanded Leased Premises and Building D
Expansion Space.  If Landlord or Tenant duly terminates the Lease
under Article VI with respect to the Second Expansion Space
and/or the VAD Space, the Lease shall remain in full force and
effect with respect to the Expanded Leased Premises and Building
D Expansion Space and the Second Expansion Space and/or the VAD
Space shall be stricken from the definition of "Leased Premises"
under the Lease.  Upon such damage or destruction to the Second
Expansion Space and/or the VAD Space, the parties agree to enter
into an amendment to the Lease setting forth the reduced Leased
Premises and other related changes to the Lease, including,
without limitation, reduction of Basic Annual Rent and Tenant's
Portion of Common Area Expenses, Taxes and Insurance.

          Notwithstanding anything set forth above in this
Article VI, if Landlord or Tenant has the right to terminate the
Lease pursuant to this Article VI due to damage or destruction to
one or the other of the Second Expansion Space or the VAD Space,
but not both Spaces, then Landlord or Tenant shall not have the
right to terminate the Lease under this provision with respect to
the non-damaged Space in Building B, or with respect to the
Expanded Leased Premises.

          15.  Condemnation.  The last sentence of the second
paragraph of Article VII of the Lease shall only apply to the
Expanded Leased Premises and Building D Expansion Space, and
shall not apply to the Second Expansion Space or the VAD Space.
In addition, Article VII of the Lease shall be amended by adding
the underlined language to the paragraph at the end thereof as
follows:

               Notwithstanding the preceding two (2) paragraphs
of this Article VII, if Landlord or Tenant has the right to
terminate the Lease pursuant to this Article VII due to taking or
condemnation of the Expanded Leased Premises and Building D
Expansion Space only (excluding the Second Expansion Space and
VAD Space), then Landlord or Tenant automatically shall have the
right pursuant to this Article VII to terminate the Lease with
respect to the Second Expansion Space and VAD Space, regardless
of whether the Second Expansion Space and/or the VAD Space has
been condemned in whole or in part.  However, if Landlord or
Tenant has any right to terminate the Lease pursuant to this
Article VII due to condemnation or taking of the Second Expansion
Space and/or the VAD Space only (excluding the Expanded Leased
Premises and Building D Expansion Space), Landlord or Tenant
shall not have the right to terminate the Lease with respect to
the Expanded Leased Premises and Building D Expansion Space.  If
Landlord or Tenant duly terminates the Lease under Article VII
with respect to the Second Expansion Space and/or the VAD Space,
the Lease shall remain in full force and effect with respect to
the Expanded Leased Premises and Building D Expansion Space, and
the Second Expansion Space and/or VAD Space shall be stricken
from the definition of "Leased Premises" under the Lease.  Upon
such condemnation of the Second Expansion Space and/or the VAD
Space, the parties agree to enter into an amendment to the Lease
setting forth the reduced Leased Premises and other related
changes to the Lease, including, without limitation, a reduction
of Basic Annual Rent and Tenant's Portion of Common Area
Expenses, Taxes and Insurance.

          Notwithstanding anything set forth above in this
Article VII, if Landlord or Tenant has the right to terminate the
Lease pursuant to this Article VI due to taking or condemnation
of one or the other of the Second Expansion Space or the VAD
Space, but not both Spaces, then Landlord or Tenant shall not
have the right to terminate the Lease under this provision with
respect to the non-condemned Space in Building B, or with respect
to the Expanded Leased Premises.

          16.  Parking. Parking under the Lease shall not be
modified pursuant to this Fifth Amendment.

          17.  Tenant  Authorization.  Tenant represents and
warrants to Landlord that this Fifth Amendment has been validly
authorized and is executed by an authorized officer of Tenant and
that its terms are binding upon and enforceable against Tenant in
accordance herewith.

          18.  Lease as Amended.  From and after the full
execution of this Fifth Amendment, the Lease shall be amended and
in full force and effect in such respects as are set forth in
this Fifth Amendment, and all other provisions, terms, conditions
and riders of and to the Lease shall in all respects remain as
set forth in the Lease, in full force and effect and applicable
to the Expansion Space, except as specifically set forth in this
Fifth Amendment.

          19.  Tenant  Reaffirmation  of  Lease.  Tenant hereby
reaffirms and restates, and agrees to be bound by, the covenants,
promises, representations and agreements set forth in the Lease
(except to the extent that they are expressly superseded by this
Fifth Amendment) as if made herein.

                              LANDLORD:
WITNESS/ATTEST:               CLOPPER ROAD ASSOCIATES,
                              a Maryland general partnership

                              By:  M.O.R.M. Associates Limited
                              Partnership
                              
                              By:  RA & FM, Inc.

                              By:  Alton D. Fryer(SEAL)
                              Name:  Alton D. Fryer
                              Title: Vice President

                              TENANT:

WITNESS/ATTEST:               MEDIMMUNE, INC.,
                              a Delaware corporation
                         
David LeBUhn                  By:  David M. Mott(SEAL)
                              Name: David M. Mott
                              Title:  President

[Notaries cont'd next page]


STATE OF MARYLAND        )
                         ) TO WIT:
COUNTY OF FREDERICK      )

     I HEREBY CERTIFY that on this 4th  day of October, 1996_,
before me, the subscribed, a Notary Public of the State and
county aforesaid, personally appeared Alton D. Fryer, Vice
President of RA & FM, Inc., general partner of M.O.R.M.
Associates Limited Partnership, general partner of Clopper Road
Associates, and he acknowledged the foregoing Fifth Amendment of
Lease to be the act and deed of said general partnership.

     WITNESS my hand and Notarial Seal.
                                        Mary Gail Peters
                                        Notary Public
                                        
My Commission Expires: April 1, 1998


STATE/COMMONWEALTH OF MARYLAND )
) TO WIT:
COUNTY OF MONTGOMERY           )

     I HEREBY CERTIFY that on this 3rd  day of October, 1996,
before me, the subscribed, a Notary Public of the
state/Commonwealth and County aforesaid, personally appeared
David M. Mott, President and Chief Operating Officer of
MedImmune, Inc., Tenant, and he acknowledged the foregoing Fifth
Amendment of Lease to be his/the act and deed of said
corporation.

     WITNESS my hand and Notarial Seal.
                                   
                                   Carol A. Iorio
                                   Notary Public

My Commission Expires:  July 11, 1998



                                                    EXHIBIT 10.64




         PORTIONS OF THE FOLLOWING DOCUMENT HAVE DELETED
              DUE TO THE CONFIDENTIAL NATURE OF THE
                 INFORMATION CONTAINED THEREIN.
            SUCH DELETIONS ARE INDICATED AS FOLLOWS:
           (CONFIDENTIAL TREATMENT HAS BEEN REQUESTED)
                                
           THE CONFIDENTIAL INFORMATION HAS BEEN FILED
                 SEPARATELY WITH THE COMMISSION



                   ENGINEERING, PROCUREMENT,

         CONSTRUCTION AND VALIDATION SERVICES AGREEMENT

                            BETWEEN

                        MEDIMMUNE, INC.

                              AND

                       FLUOR DANIEL, INC.




                       TABLE OF CONTENTS


ARTICLE             TITLE                                   PAGE

                    INTRODUCTION                             1

ARTICLE I           DESCRIPTION OF AGREEMENT                 1

ARTICLE II          SCOPE OF SERVICES                        2

ARTICLE III         COMPENSATION                             6

ARTICLE IV          TERMS OF PAYMENT                         8

ARTICLE V           WARRANTIES AND GUARANTEES               12

ARTICLE VI          INDEMNIFICATION                         14

ARTICLE VII         INSURANCE                               16

ARTICLE VIII        TERMINATION AND CANCELLATION            17

ARTICLE  IX         COMPLETION, START  UP  AND  VALIDATION  19

ARTICLE X           GENERAL PROVISIONS                      22

                    SIGNATURE PAGE                          28

EXHIBITS:
Exhibit "A" - Scope of Services/Facilities
Exhibit "B" - Schedule of Payments and Milestones
Exhibit "B-1"  -  Letter of Credit Draft In Lieu of Retention Sample
Exhibit "C" - Schedule of Reimbursable Costs

                   ENGINEERING, PROCUREMENT,
         CONSTRUCTION AND VALIDATION SERVICES AGREEMENT


THIS AGREEMENT for the performance of services is executed on the
9th day of August, 1996 and made effective as of the 31st  day of
July, 1996, between Fluor Daniel, Inc. ("Fluor Daniel") and
MedImmune, Inc. ("MedImmune").

IN CONSIDERATION of the covenants set forth herein, the parties
hereto mutually agree as follows:


                           ARTICLE I
                    DESCRIPTION OF AGREEMENT


1.1  Documents Included

     This agreement consists of this contract document and the
     following attached exhibits, as well as approved final
     drawings and specifications (collectively the "Agreement"):

               Exhibit "A" - Scope of Services/Facilities (including
                engineering, design, construction and validation)
               Exhibit "B" - Schedule of Payments and Milestones
               Exhibit "C" - Schedule of Reimbursable Costs


1.2  Entire Agreement

     This Agreement, as defined in Section 1.1, sets forth the
     full and complete understanding of the parties with regard
     to the subject matter hereof as of the date first above
     stated, and it supersedes any and all agreements and
     representations made or dated prior thereto with regard to
     the same subject matter.  For the sake of convenience, the
     parties may, from time to time, issue purchase orders, work
     orders, or other such forms.  However, the contractual terms
     and conditions of this Agreement may be supplemented,
     deleted and/or changed only through formal written
     amendments to this Agreement, and not through purchase
     orders, work orders or any other or similar such documents
     unless evidenced by a written change order signed by each of
     the parties hereto; and any such terms or conditions
     contained in purchase orders, work orders or any other or
     similar such documents shall be void and of no force or
     effect unless evidenced by such change orders.

1.3  Conflicting Provisions

     In the event of any conflict between this contract document
     and any of the Exhibits hereto, the terms and provisions of
     this contract document shall control.  In the event of any
     conflict among the Exhibits, the Exhibit of the latest date
     shall control.


                           ARTICLE II
                       SCOPE OF SERVICES


2.1  Description of Services

     Fluor Daniel shall perform all design, engineering,
     procurement, construction (including Punch List items, as
     defined in Section 9.2b) and validation services as
     described in Exhibit "A", (the "Project").  All goods,
     materials, supplies and equipment to be procured,
     transported, installed, or validated, and all services to be
     performed by Fluor Daniel are hereinafter referred to as the
     "Services".

2.2  Fluor Daniel's Responsibilities

     As part of the Services, Fluor Daniel shall, subject to the
     terms and provisions of this Agreement:

          (a)  Furnish the services of qualified supervisors,
          engineers, designers, draftsmen and other personnel
          necessary or appropriate for the preparation of
          drawings, specifications and other such items necessary
          or appropriate for the completion of the Services;

          (b)  Furnish the services of buyers, inspectors,
          expediters, procurement and other personnel necessary
          or appropriate to procure machinery, equipment,
          materials, supplies, miscellaneous construction items
          and related services necessary for the completion of
          the Services;

          (c)  Furnish the services of procurement personnel,
          construction managers, supervisors, engineers and other
          personnel necessary or appropriate to place and
          administer  construction subcontracts, purchase orders
          and other such agreements necessary for the completion
          of the Services;

          (d)  Furnish the design and other services of other
          managers, engineers, supervisors, foremen, construction
          workers, skilled and unskilled labor and other
          personnel necessary or appropriate for the completion
          of the Services;

          (e)  Prepare drawings, specifications and other such
          items necessary or appropriate for the completion of
          the Services, the drawings or documents identified in
          Exhibit "A" as requiring MedImmune approval shall be
          submitted to MedImmune for approval; including
          technical drawings, schedules, diagrams and
          specifications, setting forth in detail the
          requirements for construction of the Project, and
          provide information customarily necessary for the use
          of those in the building trades and include documents
          customarily required for regulatory agency approvals;

          (f)  Procure machinery, equipment, materials, supplies
          (other than ethanol, feedstock, and operational
          supplies required beyond OQ (as hereafter defined),
          miscellaneous construction items and services
          (including transportation, utilities and other
          facilities) necessary or appropriate for the proper
          execution and completion of the Services;

          (g)  Place and administer construction subcontracts,
          purchase orders and other such agreements necessary for
          the completion of the Services and supervise and direct
          the Services using its best skill and attention to
          assure that the Project is completed in a good and
          workmanlike manner;

          (h)  Perform the validation services described in
          Exhibit "A";

          (i)  Supply the materials, small tools and consumables
          necessary or appropriate for the completion of the
          Services;

          (j)  Supply major construction tools and equipment
          necessary or appropriate for the completion of the
          Services;

          (k)  Prepare and furnish a Project Schedule and issue
          updates thereof to MedImmune once per month;

          (l)  File all documents and obtain all permits and
          licenses necessary for the Services, except those which
          are required by Exhibit "A" to be obtained by
          MedImmune; provided that MedImmune will cooperate with
          Fluor Daniel and take any reasonable actions which are
          required of MedImmune and/or reasonably requested by
          Fluor Daniel;

          (m)  Except to the extent to be provided by MedImmune
          pursuant to the express terms of this Agreement,
          furnish the services of personnel, and provide the
          tools and materials, necessary or appropriate to start
          up the Project as provided in Exhibit "A";

          (n)  Furnish the services of all validation personnel
          necessary or appropriate to validate the Project
          through Installation Qualification ("IQ") and
          Operational Qualification ("OQ"), as provided in
          Exhibit "A";

          (o)  Pay all sales, consumer, use and similar taxes,
          fees and import duties to the extent they were in
          effect on the date hereof;

          (p)  Keep the premises free from accumulation of waste
          materials or rubbish, and upon the completion of the
          Services, remove from and about the Project its tools,
          construction equipment, machinery, surplus materials,
          waste materials and rubbish, and if Fluor Daniel fails
          to clean up at the completion of the Services,
          MedImmune may do so and the cost thereof shall be
          charged to Fluor Daniel;

          (q)  Prepare Change Orders for approval and execution
          by MedImmune in accordance with this Agreement;

          (r)  At reasonable times, during normal business hours,
          provide access to shop drawings, product data, samples
          and other technical data for review during construction
          of the Project;

          (s)  Perform inspections, tests and approvals necessary
          or appropriate for the Services;

          (t)  Provide operating manuals and written instructions
          relating to the operation of all installed and portable
          equipment provided hereunder; and

          (u)  Within five (5) days following execution of this
          Agreement, appoint one or more individuals who shall be
          authorized to act on behalf of Fluor Daniel and with
          whom MedImmune may consult at all reasonable times, and
          whose instructions, requests and decisions will be
          binding upon Fluor Daniel as to all matters pertaining
          to this Agreement and the performance of the parties
          hereunder.

          (v)  Assign to this Project the team of Tom Trevithick,
          Bob Green, John Sweet, Ken Simmons and on-site
          supervisor, Charlie Rogers, who will be dedicated to
          this Project as necessary or appropriate to effect its
          completion.

2.3  MedImmune's Responsibilities

     MedImmune shall at such times as may be required by Fluor
     Daniel for the successful and expeditious completion of the
     Services:

          (a)  Provide a site for the Services;

          (b)  Provide or cause others to provide Fluor Daniel
          with the design criteria, surveys, soil test results,
          and other information, listed in Exhibit "A";

          (c)  Cooperate with Fluor Daniel in its obtaining of
          permits and licenses as specified in Section 2.2. (l);
          and obtain, with Fluor Daniel's assistance and
          cooperation, all  permits and licenses which are listed
          in Exhibit "A" as the responsibility of MedImmune;

          (d)  Provide, or cause others to provide, a designation
          on an MedImmune supplied survey, together with a
          physical marker at a specific location on the Project
          site (or other nearby location readily accessible to
          Fluor Daniel), showing the precise location of Fluor
          Daniel's starting reference point;

          (e)  Obtain and pay all expenses involved in obtaining
          the easements and rights of way necessary for Fluor
          Daniel to perform the Services, as identified in
          Exhibit "A";

          (f)  Provide interface with and coordination of all
          work which is being performed by MedImmune or
          contractors other than Fluor Daniel, if any;

          (g)  Provide ALTA survey showing all existing utilities
          and other improvements at the Project site;

          (h)  Advise of the existence and location, and
          undertake the abatement and disposal of all toxic
          and/or hazardous materials at the Project site, which
          are encountered by Fluor Daniel in the performance of
          the Services;

          (i)  Furnish within ten (10) days of a written request
          all required reviews and approvals (or other
          appropriate action) with respect to all samples,
          estimates, schedules, shop drawings, drawings,
          specifications, purchase orders, contracts, and other
          items submitted and/or proposed by Fluor Daniel;

          (j)  Provide appropriate on-site representatives and
          all feed stock necessary or appropriate to start up the
          Project;

          (k)  Appoint an individual who shall be authorized to
          act on behalf of MedImmune, with whom Fluor Daniel may
          consult at all reasonable times, and whose
          instructions, requests and decisions will be binding
          upon MedImmune as to all matters pertaining to this
          Agreement and the performance of the parties hereunder.
          MedImmune hereby appoints Bill Braden, but reserves the
          right to substitute another person on ten (10) days
          prior written notice.


                          ARTICLE III
                          COMPENSATION

3.1  Contract Price

     Base Contract.  In consideration of the undertakings by
     Fluor Daniel pursuant to this Agreement (including the
     performance of all the Services hereunder), MedImmune shall
     pay Fluor Daniel a lump sum contract price (the "Contract
     Price") of Forty Two Million Five Hundred Thousand Dollars
     ($42,500,000.00), which amount is subject to adjustment only
     as expressly provided in this Agreement, and regardless of
     Fluor Daniel's estimates or actual costs of labor,
     materials, equipment, tools and supplies to perform the
     Services.

3.2  Adjustments to the Contract Price and the Project Schedule

     It is the desire of the parties to keep changes in the
     Services at a minimum, but the parties recognize that such
     changes may become necessary.  The parties agree that
     changes shall be handled as follows:

          (a)  MedImmune may initiate a change to the Services by
          advising Fluor Daniel in writing of the change believed
          to be necessary.  As soon thereafter as practicable,
          Fluor Daniel shall prepare and forward to MedImmune a
          cost estimate  of the change and the adjustment to the
          Contract Price (upwards or downwards),  the  Project
          Schedule, and any scheduled completion date(s)
          applicable thereto.  Fluor Daniel shall be reimbursed
          for the costs incurred to prepare its estimate (the
          "Estimate Costs") in the event of change orders
          initiated by MedImmune.  In the event of change orders
          initiated by Fluor Daniel, the Estimate Costs shall be
          borne by Fluor Daniel.   MedImmune shall within ten
          (10) days advise Fluor Daniel in writing of its
          approval or disapproval of the change.  If MedImmune
          approves the change, Fluor Daniel shall perform the
          Services as changed and the adjustments to the Contract
          Price, the Project Schedule, and any completion date(s)
          applicable thereto shall become effective.  If Fluor
          Daniel and MedImmune cannot agree upon the appropriate
          changes to the Contract Price, the Project Schedule and
          any scheduled completion date(s) applicable to a
          change, but MedImmune approves or directs the change
          anyway, or the change is of a type set forth in Section
          3.2 (b) below, Fluor Daniel shall, provided MedImmune
          makes payments in accordance with this Agreement,
          continue the Services (including change order work)
          without interruption, and the Contract Price, the
          Project Schedule, and any scheduled completion date(s)
          shall be equitably adjusted, by mutual agreement of the
          parties if possible.  If the parties cannot agree, the
          cost of any increased or expanded Services provided by
          Fluor Daniel shall be equal to the sum of reimbursable
          costs in respect of such additional Services determined
          in accordance with the Schedule of Reimbursable Costs
          which is attached as Exhibit "C", plus an aggregate fee
          to Fluor Daniel of five percent (5%) of such costs.
          Fluor Daniel may initiate changes by advising MedImmune
          in writing that in Fluor Daniel's opinion a change is
          necessary.  If MedImmune agrees, MedImmune shall
          promptly advise Fluor Daniel in writing and,
          thereafter, the change shall be handled as if initiated
          by MedImmune (except for reimbursement of Estimate
          Costs).  If MedImmune rejects such change proposed by
          Fluor Daniel, Fluor Daniel shall not perform the change
          recommended by Fluor Daniel.  Notwithstanding anything
          in this Agreement to the contrary, in the event Fluor
          Daniel requests any increase in the Contract Price or
          extension of the scheduled completion date(s) by reason
          of any Force Majeure event (subject to the limitations
          set forth in Section 10.3 hereof) or MedImmune delay,
          as a condition thereof, Fluor Daniel shall, within ten
          (10) days after it becomes aware of the occurrence of
          the event or circumstances giving rise to the alleged
          Force Majeure event or MedImmune delay, notify
          MedImmune of such events or circumstances in writing,
          which notice shall identify with reasonable detail the
          nature of the delay, its estimated impact on completion
          dates and Contract Price, if any, and Fluor Daniel's
          plan for mitigating such impact to the extent
          practicable.

          (b)  Changes shall include, and the Contract Price, the
          Project Schedule, and any scheduled completion date(s)
          shall be equitably adjusted to reflect (1) the addition
          to, modification of or deletion from the Services or
          the items shown or described in Exhibit "A"; (2) an
          approved change in the Project Schedule and/or any
          scheduled completion date(s); (3) MedImmune's request
          for performance of Services in excess of Fluor Daniel's
          standard work day or work week or on a holiday
          customarily observed by Fluor Daniel unless otherwise
          required pursuant to Section 4; (4) the discovery of
          any subsurface conditions which differ from (a) those
          shown in or reasonably inferable from the Agreement (or
          the documents known to both parties upon which the
          Agreement is based), and (b) those ordinarily
          encountered and generally recognized as inherent in
          work of the type contemplated herein in the area of the
          Project site, and (c) those reasonably apparent upon
          customary inspection; (5) a modification of applicable
          law (or a change in the interpretation thereof) after
          the date hereof which substantially affects
          (individually or in the aggregate) the cost of and/or
          time required for performing the Services; (6) delay or
          suspension of, or interference with, the Services by
          MedImmune or by any other person or entity including,
          but not limited to, national, state and local
          governments, but excluding Fluor Daniel and any party
          directly or indirectly under the control of Fluor
          Daniel; provided, however, that delay by governmental
          entities shall not be considered a Force Majeure event
          if occasioned by a failure of Fluor Daniel to comply
          with the standards of care and diligence set forth in
          Section 5.1 of this Agreement; (7) the discovery of any
          subsurface rock which is not "rippable" using
          conventional rock ripping methods and which is not
          disclosed by the soil report or reasonably apparent by
          customary inspection; (8) errors or omissions in and/or
          modifications made to and/or unreasonable delay in
          furnishing any design criteria (as set forth in Exhibit
          "A"), other information expressly required by this
          Agreement to be supplied to Fluor Daniel by MedImmune,
          or decisions by MedImmune; and (9) any other increase
          in Fluor Daniel's costs, or the time required for
          completion of the Services due to any Force Majeure
          event as defined in Section 10.3 hereof.


                           ARTICLE IV
                        TERMS OF PAYMENT
4.1  Payments

     Subject to Section 4.2 below, MedImmune shall pay Fluor
     Daniel the Contract Price in monthly installments in the
     amounts set forth in the Schedule of Payments and Milestones
     which is attached hereto as Exhibit "B".  Subject to Section
     4.2 below, payments shall be made by wire transfer on the
     scheduled dates, to a bank account designated by Fluor
     Daniel in writing.  Fluor Daniel's pay requests shall be
     accompanied by Fluor Daniel's certificate indicating
     progress with respect to each item of Services described in
     the applicable Milestone and with respect to the Milestone
     as a whole, and lien waivers for the work covered by such
     pay request.  MedImmune shall have the right to review and
     approve all pay requests.  Provided that MedImmune is not in
     default of any payment obligation hereunder, Fluor Daniel
     agrees to satisfy, remove or bond off any liens claimed by
     it, its employees, subcontractors or suppliers, within
     fifteen (15) days of its receipt of written notice thereof,
     and Fluor Daniel's performance of this obligation shall be a
     condition to MedImmune's obligation to make payments
     hereunder.  Any change in the Contract Price under this
     Agreement shall be incorporated into the Schedule of
     Payments and Milestones in an equitable manner.




4.2  Milestones

     If and to the extent that Fluor Daniel does not achieve the
     Milestones set forth in Exhibit "B", as modified by Change
     Order, by the payment dates to which they correspond, for
     other than a delay (beyond 10 days) by MedImmune in
     approving submittals or making required decisions, MedImmune
     may withhold an equitable amount of the corresponding
     payment equal to the value of the incomplete portion until
     Fluor Daniel does complete such incomplete portion and
     achieve the missed Milestones.  Fluor Daniel shall submit
     invoices indicating its progress with respect to the
     applicable Milestone and its proposed values for any
     incomplete portions thereof.  The parties agree, however,
     that no payment shall be required with respect to any given
     Milestone in the event that Fluor Daniel's progress toward
     completion of the events included within such Milestone is
     less than 75% of the aggregate value of such Milestone; in
     addition, no payment shall be required with respect to any
     item of Services within any Milestone if progress on that
     item is less than 75% of the progress required to complete
     such item within such Milestone.  In the event that Fluor
     Daniel fails to achieve any Milestone as a result of a Force
     Majeure event, Fluor Daniel shall be entitled to partial
     payment with respect to such Milestone whether or not its
     progress meets or exceeds 75% of the value of such
     Milestone, but (1) only Fluor Daniel's external out-of-
     pocket costs and expenses (not to exceed the percentage of
     progress achieved) with respect to such Milestone shall be
     paid in the event of progress less than such 75% amount
     (excluding overhead, general conditions, and all costs of
     Fluor Daniel employees on site or in supervisory,
     administrative, or executive roles); and (2) such expenses
     shall be paid only if, but for such Force Majeure event,
     Fluor Daniel would have achieved at least 75% completion of
     such Milestone.  Failure of Fluor Daniel to achieve
     Milestones and the withholding by MedImmune of all or a
     portion of the corresponding payment shall have no effect on
     MedImmune's obligation to make future payments as long as
     Fluor Daniel meets the requirements thereof and shall have
     no effect on Fluor Daniel's obligations hereunder, except as
     set forth in the next sentence.  Whenever this Agreement
     provides for the adjustment of the Project Schedule or any
     scheduled completion date(s) (including, without limitation,
     Sections 3.2, 6.2 and 10.3), the Milestone dates shall be
     correspondingly adjusted; provided, however, that Fluor
     Daniel and MedImmune expressly agree that in the event Fluor
     Daniel is behind the Project Schedule (for reasons other
     than a Force Majeure event or MedImmune  default) to such an
     extent that Fluor Daniel will not be able to achieve timely
     Completion, or the applicable portion thereof by the
     applicable Milestones, Fluor Daniel, as a cost which shall
     not cause an adjustment to the Contract Price, shall employ
     such additional forces or pay such additional overtime wages
     and salaries as may be reasonably required to place the
     progress of the Services in conformance with the Project
     Schedule required to achieve timely Completion.

4.3  Other Payment Provisions

(a)  Fluor Daniel shall promptly pay each subcontractor (and
     require each subcontractor to promptly pay each sub-
     subcontractor), upon receipt of payment from MedImmune, out
     of the amount paid to Fluor Daniel on account of such
     subcontractor's work, the amount to which said subcontractor
     (or sub-subcontractor) is entitled in accordance with the
     terms of Fluor Daniel's contract with such subcontractor.
     Fluor Daniel shall, by appropriate agreement with each
     subcontractor, require each subcontractor to make payments
     to sub-subcontractors in similar manner.

(b)  MedImmune shall have no obligation to pay or to be
     responsible in any way for payment to a contractor of Fluor
     Daniel.

(c)  No progress payment or partial or entire use or occupancy of
     the Project by MedImmune shall constitute an acceptance of
     Services not in accordance with the Contract Documents.

(d)  In lieu of having retainage withheld from its payments
     hereunder, Fluor Daniel shall provide an escalating
     irrevocable standby letter of credit in the ultimate amount
     of Four Million Two Hundred Fifty Thousand Dollars
     ($4,250,000.00), with MedImmune as beneficiary, in the form
     of Exhibit B-1 prior to payment by MedImmune of amounts due
     at Milestone 3 (as set forth in Exhibit B attached hereto).
     The cost of the Letter of Credit (priced at 15 basis points)
     will be separately reimbursed and is not included in the
     Contract Price.  Fluor Daniel shall be provided 72 hours
     advance written notice of any draw against the Letter of
     Credit.  Fluor Daniel hereby waives any right to seek an
     injunction or other equitable relief to prohibit any such
     draw after its receipt of the 72 hour advance written
     notice.

     In the event that Fluor Daniel (i) fails to complete its
     Services by thirty (30) days after the scheduled Completion
     date (as adjusted to the extent expressly permitted
     hereunder), MedImmune may draw against the Letter of Credit
     for the liquidated damages then accrued pursuant to the
     terms of this Agreement or (ii) is in default hereunder,
     MedImmune may draw against the Letter of Credit for any
     damages then accrued pursuant to the terms of this
     Agreement.  MedImmune may, thereafter, make additional draws
     every ten days for additional damages or liquidated damages
     then accrued.  MedImmune shall have no right to draw against
     the Letter of Credit for prospective or anticipated damages
     or liquidated damages, but only for damages or liquidated
     damages after they have accrued.  Fluor Daniel shall have no
     right to dispute MedImmune's calculation of damages or
     liquidated damages with respect to draws against its Letter
     of Credit; however, Fluor Daniel may still dispute with
     MedImmune the propriety or amount of damages or liquidated
     damages subsequent to any such draw.

     The escalation schedule shall be as follows:

                    Issuance       $  850,000.00
                    12/1/96        $1,700,000.00
                    4/1/97         $2,550,000.00
                    8/1/97         $3,400,000.00
                    12/1/97        $4,250,000.00



4.4  Final Payment

     Notwithstanding the payment schedule set forth in Exhibit
     "B", subject to the provisions of Section 9.4 hereof, the
     final installment of the Contract Price, due at Completion,
     together with all other amounts then due and owing by
     MedImmune to Fluor Daniel pursuant to any change orders
     effected in accordance with this Agreement, shall be paid if
     and when Fluor Daniel has (a) completed the Services and OQ
     has been achieved, including completion of all Punch List
     items, issuance of a permanent Certificate of Occupancy or
     its equivalent for the Project from the applicable
     governmental authority having jurisdiction over the Project,
     balancing of all the base building systems, delivery and
     assignment to MedImmune of all Project permits and
     manufacturers' warranties, and delivery to MedImmune of a
     complete set of construction drawings red-lined on CAD to
     reflect "as built" conditions, (b) certified that all bills
     for labor and materials connected with the Project will be
     fully paid from the proceeds of Final Payment and delivered
     appropriate lien waivers, and (c) a full, clean title
     insurance policy update has been obtained with affirmative
     mechanic's lien insurance.  Acceptance of final payment
     shall constitute a waiver of all claims by Fluor Daniel.

4.5  Interest

     Subject to Section 8.2 hereof, any payment not made within
     five (5) business days of its due date under this Agreement
     (including any disputed amounts which are ultimately paid)
     shall bear interest at the rate of one percent (1%) per
     annum above the prime rate then published in the Wall Street
     Journal, until paid, but not to exceed the maximum rate
     permitted by applicable law.  The payment of interest shall
     not excuse or cure any delinquent payment.  If for any
     reason, other than a default by Fluor Daniel, MedImmune
     fails to pay Fluor Daniel in full as required by this
     Agreement (subject to Sections 8.2 and 9.4), after notice
     and failure to cure within ten (10) business days Fluor
     Daniel may, without limitation, suspend its performance of
     the Services until all outstanding amounts have been paid in
     full by MedImmune and/or exercise its rights under Section
     8.2; provided, however, that Fluor Daniel shall not suspend
     its Services if any such non-payment arises from a good
     faith, reasonable dispute between the parties.


                           ARTICLE V
                   WARRANTIES AND GUARANTEES


5.1  Fluor Daniel's Services

     Fluor Daniel warrants and guarantees that (a) it will
     perform the Services in a good and workmanlike fashion and
     in accordance with the standards of care and diligence
     normally practiced by recognized engineering and
     construction firms in performing services of a similar
     nature for similar projects at the time the Services are
     performed; and (b) the materials, supplies and equipment
     included within the Services (excluding the Listed
     Equipment, as defined below) shall be new (except as
     otherwise approved by MedImmune), free from defects in
     design and workmanship (other than de minimus defects) and
     in compliance with the design and procurement specifications
     set forth in Exhibit A, which is attached hereto.  Fluor
     Daniel warrants the truth and accuracy of any of its written
     communications to MedImmune containing representations of
     fact.  Review by MedImmune of any document submitted by
     Fluor Daniel shall not constitute acceptance thereof and
     shall not relieve Fluor Daniel of its obligations hereunder.
     Fluor Daniel further warrants and guarantees that its
     Services will comply with applicable laws, as provided in
     Section 10.2 of this Agreement.

     At the written request of MedImmune delivered at any time
     prior to one (1) year after the earlier of:  (i) Completion
     of the Services pursuant to Section 9.2(c); or (ii)
     scheduled Completion of the Services, in the event that the
     Services are terminated pursuant to Article VIII; Fluor
     Daniel shall, at its sole cost and expense, perform all
     corrective Services within the scope of Services (including
     any approved change orders) as are necessary to make the
     Services conform to the foregoing warranty and guarantee.
     Corrective Services shall be warranted, as provided herein,
     for a period of one year following the completion of any
     such item of corrective Service.  Fluor Daniel's total
     aggregate liability in connection with this warranty shall
     in no event exceed Five Million Dollars ($5,000,000.00) of
     external costs.

5.2  Third Party Items

     Fluor Daniel shall, for the protection of MedImmune, obtain
     from all vendors, suppliers, manufacturers and other
     entities from whom Fluor Daniel purchases the machinery,
     equipment, tools, and other items listed in the equipment
     list appearing as Attachment 7 to Exhibit "A" (the "Listed
     Equipment"), warranties and/or guarantees with respect
     thereto, which shall be made available to MedImmune to the
     full extent of the terms thereof.  Fluor Daniel's liability
     with respect to such Listed Equipment shall be limited to
     procuring customary warranties and/or guarantees from such
     vendors, suppliers, manufacturers and other entities (unless
     otherwise specified) of at least one (1) year in duration
     and rendering all reasonable assistance to MedImmune for the
     purpose of enforcing the same; provided that Fluor Daniel's
     warranty and guarantee shall apply to the installation of
     such Listed Equipment, and to the assurance and warranty
     that such Listed Equipment is new and in compliance with the
     specifications set forth in Exhibit "A" attached hereto.
     Except for installation, no warranty shall apply to used
     equipment that may be purchased, so long as the purchase of
     such used equipment is authorized by the terms of this
     Agreement.  MedImmune shall notify Fluor Daniel in the event
     that it desires longer warranties on any of the Listed
     Equipment, in which event Fluor Daniel shall obtain pricing
     for such longer warranties from the vendors, and MedImmune
     shall approve a change order increasing the Contract Price
     by such amount in the event it elects to obtain such longer
     warranty.

5.3  Title

     Fluor Daniel warrants that title to the work, material and
     equipment (including the Listed Equipment) will pass to
     MedImmune upon receipt of payment by Fluor Daniel for such
     work, material or equipment. Provided that MedImmune makes
     proper payment in accordance with the terms of this
     Agreement, such work, material and equipment shall be free
     of any liens, claims, security interests or encumbrances.

5.4  Limitations

     The obligations contained in this Article V are Fluor
     Daniel's sole warranty and guarantee obligations and the
     exclusive remedy of MedImmune in respect of the quality of
     the Services.  As used in this Articles, the quality of the
     Services includes, without limitation, any requirement that
     the Services (or any product thereof including the Project)
     comply with laws, codes, standards, rules, regulations,
     specifications, drawings or other criteria.  Fluor Daniel
     makes no warranties or guarantees relating to the staffing,
     performance or cost of operation of the Project, nor makes
     any other warranties or guarantees, expressed or implied,
     which are not expressly set forth herein.  ALL IMPLIED
     WARRANTIES, INCLUDING BUT NOT LIMITED TO WARRANTIES OF
     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
     EXPRESSLY DISCLAIMED AND WAIVED, IT BEING ACKNOWLEDGED AND
     AGREED THAT THE ONLY WARRANTIES AFFORDED HEREUNDER ARE THOSE
     EXPRESSLY SET FORTH HEREIN.  The failure of MedImmune to (a)
     properly operate and maintain the Project or (b) allow Fluor
     Daniel to promptly make such tests and perform such
     reasonable corrective Services as Fluor Daniel may deem
     appropriate, shall relieve Fluor Daniel of its warranty and
     guarantee obligations relative to such improper operation
     and maintenance or the subject of such test or corrective
     Service, but only to the extent that such failure shall have
     resulted in damage to the Project which otherwise would not
     have occurred.  Fluor Daniel shall have no liability for
     defects in the Services attributable to Fluor Daniel's use
     of and/or reliance upon data, design criteria, drawings,
     specifications, reports or other information furnished by or
     on behalf of MedImmune as provided in Exhibit A unless Fluor
     Daniel knew or, employing the standards set forth in Section
     5.1 hereof, should have known of such defects.  MedImmune is
     responsible for the design criteria set forth in Exhibit A
     as being MedImmune's responsibility and for the design of
     its processes related to product manufacturing and Fluor
     Daniel does not warrant or guarantee such process or the
     design associated therewith.  This Article V governs,
     modifies and supersedes any other terms in this Agreement
     which address warranties or guarantees or the quality of the
     Services.

                           ARTICLE VI
                        INDEMNIFICATION

6.1  Bodily Injury and Property Damage Liability

     Fluor Daniel shall indemnify, defend and hold MedImmune
     harmless from any and all claims, liabilities and causes of
     action for bodily injury to and/or death of any person, and
     for damage to and/or destruction of property (excluding,
     however, the property for which MedImmune assumes the risk
     of loss and/or damage in Section 6.2 below) to the extent
     resulting from the negligent acts or omissions of Fluor
     Daniel, its agents and subcontractors.

6.2  Protection of the Project

     Fluor Daniel shall, before it constructs any significant
     improvements at the site, purchase and maintain a Builder's
     "All-Risk" Insurance Policy in the amount of the full
     replacement cost of the Project from an insurance company
     reasonably acceptable to MedImmune, insuring against risk of
     loss and/or damage to the Project constructed by Fluor
     Daniel (including all materials, machinery, equipment and
     other items to be incorporated into the Project by Fluor
     Daniel while the same are in transit, at the Project site,
     during erection and otherwise but excluding, without
     limitation, items furnished by MedImmune or others not
     within Fluor Daniel's control), and all construction tools
     and equipment used by Fluor Daniel in constructing the
     Project which are in the custody of Fluor Daniel.  MedImmune
     shall reimburse Fluor Daniel for the cost of this policy,
     and such cost is not included in the Contract Price.
     MedImmune shall be made co-loss payee as its interests may
     appear under this policy.  Fluor Daniel shall have the right
     to adjust Builder's "All Risk" Insurance claims, with
     participation by MedImmune, and, subject to the provisions
     of the Loan Documents, the proceeds of such insurance shall
     be paid to Fluor Daniel as the Services and repair,
     replacement or reconstruction progresses.  Fluor Daniel
     shall be obligated to repair, replace or reconstruct any
     portion of the Project which is lost, damaged or destroyed,
     prior to Completion or any transfer of care, custody and
     control of the Project agreed to in writing by MedImmune.
     MedImmune assumes all responsibility for such loss, damage
     and destruction after Completion or such transfer of care,
     custody and control to MedImmune agreed to in writing by
     MedImmune.  Any agreed upon completion dates and Milestone
     dates shall be equitably adjusted to account for the time
     required for any such repair, replacement and/or
     reconstruction.  Fluor Daniel's liability in connection with
     repair, replacement and/or reconstruction of the Project or
     any portion thereof, shall in no event exceed the sum of (1)
     the proceeds to Fluor Daniel of the Builder's "All-Risk"
     Insurance; plus (2) the amount of any deductible under such
     Builder's "All-Risk" Insurance (if and to the extent such
     loss was caused by the negligence or breach of contract by
     Fluor Daniel or its subcontractors); plus (3) repair,
     replacement or reconstruction costs arising from Fluor
     Daniel's gross negligence or willful misconduct.

6.3  MedImmune's Property

     Except as provided in Section 6.2 above, MedImmune assumes
     all risk of and responsibility for all loss of, damage to
     and/or destruction of the Project and all property owned by
     or in the custody of MedImmune, including its affiliates,
     however such loss, damage or destruction shall occur.
     Except as provided in Section 6.2 hereof, MedImmune waives
     any recovery rights it may have against Fluor Daniel for any
     such loss, damage or destruction and agrees to obtain a
     waiver of subrogation rights of its insurers against Fluor
     Daniel for any such loss, damage or destruction.  If
     MedImmune is not the sole owner of the Project site and all
     property thereat, MedImmune shall obtain an undertaking from
     the other owners thereof sufficient to provide to Fluor
     Daniel the same protection from liability for loss or damage
     as would be afforded to Fluor Daniel under this Agreement if
     MedImmune were the sole owner.

6.4  Mutual Waiver of Subrogation

     MedImmune and Fluor Daniel hereby waive all rights against
     each other and any of their subcontractors, sub-
     subcontractors, agents, affiliates, assigns and employees,
     each of the other, for damages caused by fire or other
     perils to the extent covered by property insurance obtained
     in accordance with the terms of Section 6.2 and 6.3 above or
     any other property insurance obtained by the injured party.
     All such insurance policies shall provide waivers of
     subrogation by the insurance carrier by endorsement or
     otherwise.  A waiver of subrogation shall be effective as to
     a person or entity, even though that person or entity would
     otherwise have a duty of indemnification, contractual or
     otherwise, did not pay the insurance premium directly or
     indirectly, and whether or not the person or entity had an
     insurable interest in the property damaged.  Fluor Daniel
     shall require from its subcontractors and subcontractors
     similar waivers in favor of Fluor Daniel and MedImmune.

6.5  Limitations

     Fluor Daniel shall have no obligation to MedImmune with
     respect to any damage to or loss of property caused by the
     perils of war, insurrection, revolution, nuclear reaction or
     other like perils as may be excluded under the scope and
     limits of the insurance coverage provided pursuant to
     Sections 6.2, 6.3 and  7.1.  MedImmune shall have no
     liability to Fluor Daniel with respect to such excluded
     risks; provided, however, that Fluor Daniel shall have no
     obligation to repair or rebuild the facilities
     (notwithstanding any provision to the contrary in Section
     6.2) as a result of damage caused by such excluded risk
     unless and to the extent that MedImmune agrees by change
     order to pay Fluor Daniel for such repairs or rebuilding.

6.6  Safety

     Fluor Daniel shall be responsible for initiating,
     maintaining and providing supervision of safety precautions
     and programs in connection with the Services.  Fluor Daniel
     shall take reasonable precautions for safety of, and shall
     provide reasonable protection to prevent damage, injury or
     loss to (1) employees on the Services and other persons who
     may be affected thereby; (2) the Services and materials and
     equipment to be incorporated therein whether in storage on
     or off site; and (3) other property at or adjacent to the
     site.  Fluor Daniel shall give notices and comply with
     applicable laws, ordinances, rules, regulations and orders
     of public authorities bearing on the safety of persons and
     property and their protection from damage, injury or loss.
     Fluor Daniel shall require and be responsible for the
     erection and maintenance as required by existing conditions
     and progress of the Services, of all reasonable safeguards
     for safety and protection, including posting danger signs
     and other warnings against hazards, promulgating safety
     regulations and notifying owners and users of adjacent
     facilities.  The parties agree that this Section 6.6 shall
     neither enlarge nor limit Fluor Daniel's indemnity
     obligations, nor the parties' allocation of risk concerning
     property damage, all as set out in Sections 6.1 through 6.5
     above.


                          ARTICLE VII
                           INSURANCE

7.1  Fluor Daniel's Commitment

     Commencing with the performance of its Services hereunder,
     and continuing during the performance of any such Services,
     Fluor Daniel shall maintain in force standard insurance
     policies from reputable insurance carriers reasonably
     acceptable by MedImmune authorized to do business in the
     State of Maryland, as follows:

          (a)  Worker's Compensation and/or all other disability
          benefit or Social Insurance in accordance with the
          statutory requirements of the state, province or
          country having jurisdiction over Fluor Daniel's
          employees who are engaged in the Services, with
          Employer's Liability of One Million Dollars
          ($1,000,000).

          (b)  Commercial General Liability, including
          Contractual Liability and Products/Completed Operations
          coverage, covering bodily injury, sickness, disease
          and/or death of persons and loss of and/or damage to
          property.  Such insurance shall be provided in a
          Combined Single Limit of Five Million Dollars
          ($5,000,000).

          (c)  Automobile Liability insurance covering owned, non-
          owned and hired vehicles, with a combined single limit
          of One Million Dollars ($1,000,000), covering bodily
          injury to and/or death of persons and loss of and/or
          damage to property.

          (d)  Excess Umbrella Liability covering (b) and (c) and
          the Employer's Liability part of (a), above, with a
          combined single limit of Ten Million Dollars
          ($10,000,000.00).

7.2  Certificates

     The foregoing insurance shall be maintained with carriers
     reasonably satisfactory to MedImmune, and the terms of
     coverage shall be as evidenced by certificates to be
     furnished to MedImmune.  Such certificates shall provide
     that thirty (30) days' written notice shall be given to
     MedImmune prior to cancellation or material alteration of
     any policy.

7.3  Subrogation

     The parties each agree to cause their respective insurers to
     waive rights of subrogation against the other in any
     policies of insurance that may apply with respect to claims
     arising out of or relating to this Agreement.


                          ARTICLE VIII
                  TERMINATION AND CANCELLATION


8.1  Termination by MedImmune

     Should Fluor Daniel become insolvent or bankrupt, or should
     Fluor Daniel refuse or neglect to supply a sufficient number
     of properly skilled workmen, equipment, tools or material
     within Fluor Daniel's control, or should Fluor Daniel fail
     to timely pay its subcontractors, or should Fluor Daniel
     commit a substantial breach of this Agreement, and should
     Fluor Daniel thereafter fail to commence proceedings in good
     faith to remedy such within ten (10) days after written
     demand by MedImmune and to effect a cure within a reasonable
     time, MedImmune may terminate this Agreement and enter upon
     the premises and take possession thereof and at the same
     time instruct Fluor Daniel to remove from the premises all
     of its tools, equipment and supplies, or MedImmune may take
     possession of Fluor Daniel's tools and equipment for the
     purpose of completing the Services.  Upon any such
     termination, Fluor Daniel shall be liable to MedImmune for
     the direct costs incurred by MedImmune to complete the
     Project (including soft costs and reasonable attorneys' fees
     incurred in placing the completion contract and the rental
     costs of Fluor Daniel's tools and equipment as assessed
     pursuant to this Section 8.1) to the extent such costs,
     together with the amounts previously paid to Fluor Daniel,
     are in excess of the Contract Price provided in Paragraph
     3.1 (subject to adjustment as provided herein).  MedImmune
     agrees to act in good faith and to take all reasonable steps
     to mitigate the cost to complete the Project.  If Completion
     is delayed, Fluor Daniel shall be responsible for liquidated
     damages, as provided in Section 9.4(b), for the portion of
     such delay attributable to Fluor Daniel's demobilization,
     the placement of a completion contract, and the mobilization
     of the completing contractor.

     In the event that MedImmune uses any of Fluor Daniel's
     equipment or tools, MedImmune shall return the same to Fluor
     Daniel in good condition and repair, reasonable wear and
     tear excepted, and shall pay Fluor Daniel for the use
     thereof at Fluor Daniel's standard rental rates then in
     effect.  If and to the extent such costs of completing the
     Project are less than the balance of the Contract Price,
     Fluor Daniel shall be paid the difference, not to exceed the
     total actual cost (excluding home office overhead and
     profit) incurred by Fluor Daniel under this Agreement as of
     the date of termination which remains unpaid.

8.2  Termination by Fluor Daniel

     Should MedImmune become insolvent or bankrupt or commit a
     substantial breach or default of any of the covenants or
     obligations hereunder and (a) fail to remedy the same within
     ten (10) days after written notice thereof from Fluor
     Daniel, if the breach constitutes a failure to pay money, or
     (b) fail to commence in good faith to remedy the same within
     ten (10) days after written notice thereof from Fluor Daniel
     and thereafter to effect a cure within a reasonable time, if
     the breach is other than to pay money, then Fluor Daniel may
     terminate this Agreement.  Should Fluor Daniel so terminate
     this Agreement, it shall be paid for all costs incurred for
     Services performed through the date of termination, all
     termination charges by vendors, subcontractors and others,
     an equitable portion of any fees and/or profit, and the cost
     of all demobilization expenses, in accordance with the
     provisions of Article III; provided, however, that no
     demobilization costs shall be reimbursable in the event that
     such termination occurs after Fluor Daniel has been paid, or
     is entitled to be paid, 50% of the Contract Price.   Fluor
     Daniel agrees to act in good faith and to take all
     reasonable steps to mitigate such costs.   Notwithstanding
     any of the foregoing to the contrary, in the event
     MedImmune, in good faith, contests the amount of payment
     claimed by Fluor Daniel to be owing to Fluor Daniel under
     this Agreement, Fluor Daniel shall continue performance of
     the Services pending resolution of such dispute provided
     that MedImmune pays to Fluor Daniel all amounts (and
     portions thereof) which are not subject to a good faith
     dispute, and provided, further, that the Disputed Amount (as
     defined below) does not exceed Three Million Dollars
     ($3,000,000.00) in the aggregate.  The difference between
     the amount paid by MedImmune and the amount claimed in good
     faith by Fluor Daniel to be owing is referred to herein as
     the "Disputed Amount."  Notwithstanding the foregoing, in
     the event that the Disputed Amount at any time exceeds Three
     Million Dollars ($3,000,000.00) in the aggregate for more
     than thirty (30) days, the parties shall be entitled to
     exercise any remedies they may have under this Agreement,
     including without limitation, those under Section 8.2.  In
     the event of termination for events of default other than
     the failure to pay money, Fluor Daniel and MedImmune agree
     to submit the issue of the validity of such termination to
     binding arbitration within 30 days of Fluor Daniel's notice
     of default.

8.3  Cancellation

     MedImmune reserves the right to cancel the Services without
     cause upon ten (10) days' written notice to Fluor Daniel,
     unless Fluor Daniel agrees in writing to a shorter notice
     period.  Should the Services be so cancelled by MedImmune,
     Fluor Daniel shall be paid for all for Services performed
     through the date of cancellation, all proven cancellation
     charges by vendors, subcontractors and others, an equitable
     portion of any fees and/or profit, and the cost of all
     demobilization expenses, in accordance with the provisions
     of this Agreement.


                           ARTICLE IX
              COMPLETION, START UP AND VALIDATION


9.1  Scheduled Completion

     Fluor Daniel shall commence the Services immediately after
     the date of this Agreement and shall prosecute the Services
     continuously, expeditiously and with adequate forces and due
     diligence.  TIME IS OF THE ESSENCE with respect to the date
     scheduled for Completion, but not with respect to other
     scheduled dates or Milestones.   The Project is scheduled to
     be Complete on or before December 31, 1997, which scheduled
     date is subject to adjustment only as expressly provided
     herein.

9.2  Acceptance

          (a)  Mechanical Completion  When Fluor Daniel deems it
          has achieved Mechanical Completion with respect to the
          Project as defined in Exhibit A, it shall so notify
          MedImmune in writing.  At MedImmune's option and sole
          discretion, Fluor Daniel shall notify MedImmune
          regarding Mechanical Completion of specific portions of
          the Project.  Within ten (10) days thereafter,
          MedImmune shall advise Fluor Daniel in writing of any
          defects in the Services or incomplete items for which
          Fluor Daniel is responsible under this Agreement which
          prevent achievement of Mechanical Completion.  As soon
          as such defects and incomplete items are corrected (or
          as soon as the ten (10) day period for such notice has
          expired if MedImmune does not advise Fluor Daniel of
          any such defects or incomplete items within the
          period), Fluor Daniel shall be deemed to have achieved
          Mechanical Completion with respect to all or the
          specific portion of the Project.

          (b)  Start Up and Validation  Following Mechanical
          Completion, Fluor Daniel will complete all remaining
          Services, provide personnel, tools and equipment, and
          materials necessary or appropriate to start up the
          Project (with "water runs" and not actual feedstock),
          and shall Validate the Project through IQ and OQ, all
          as described in more detail in Exhibit "A".  Validation
          of the Project following IQ and OQ shall be within the
          discretion of, and shall be the responsibility of
          MedImmune.

          (c)  Completion  "Completion" shall have occurred when
          Fluor Daniel has fully and finally completed all the
          Services and OQ has been achieved, provided that (i)
          Fluor Daniel shall provide to MedImmune thirty (30) day
          advance notice prior to the estimated date of
          Completion; (ii) Fluor Daniel shall have complied with
          the requirements of Section 4.4, and (iii) the
          appropriate governmental authorities shall have issued
          a certificate of occupancy or its equivalent for the
          Project (unless the nonissuance thereof is for reasons
          related solely to bureaucratic delay notwithstanding
          Fluor Daniel's timely compliance with its obligations
          hereunder).

9.3  Nonwaiver

     No acceptance or deemed acceptance of the Services by
     MedImmune under Paragraph 9.2 shall (1) affect any warranty
     of Fluor Daniel hereunder, (2) modify or impair the
     obligation of Fluor Daniel to perform the Services in
     accordance with this Agreement, including, without
     limitation, the obligation to construct the Project in
     accordance with MedImmune-approved plans and specifications
     and applicable Laws or (3) otherwise constitute a waiver or
     acceptance of any defective or nonconforming work other than
     nonconforming work specifically acknowledged and approved in
     writing by MedImmune.

9.4  Early Completion Bonus/Liquidated Delay Damages

     (a) Early Completion Bonus  If Fluor Daniel achieves
     Completion prior to December 15, 1997 (as such date may be
     hereafter adjusted as provided in this Agreement), MedImmune
     will pay Fluor Daniel an early completion bonus of $250,000
     per week for each week of early Completion with a cap not to
     exceed Four Million Dollars ($4,000,000.00).

     (b) Liquidated Delay Damages  If Fluor Daniel does not
     achieve Completion until after December 31, 1997 (as such
     date may be hereafter adjusted, but only as expressly
     provided in this Agreement), Fluor Daniel shall pay
     MedImmune as liquidated damages (and not as a penalty) One
     Hundred Thousand Dollars ($100,000.00) per week for the
     first four weeks; Four Hundred Thousand Dollars
     ($400,000.00) per week for the next eight weeks and Fifty
     Thousand Dollars ($50,000) per week after March 31, 1998.
     In no event shall Fluor Daniel's total aggregate liability
     under this Agreement for liquidated damages exceed Four
     Million Dollars ($4,000,000.00).  The parties hereby agree
     that in the event that Fluor Daniel does not achieve
     Completion by the date scheduled for Completion (as such
     date may be hereafter adjusted, but only as expressly
     provided in this Agreement), MedImmune will suffer damages
     which will be difficult to calculate and the parties agree
     that the liquidated damages provided in this Section 9.4(b)
     are a fair and reasonable estimate thereof and shall not be
     viewed as a penalty.

     (c)  For purposes of this Article 9, the figures for Early
     Completion Bonuses and/or Liquidated Delay Damages shall be
     pro-rated on a daily basis for partial weeks of early
     completion or delay.

     (d) Exclusive Remedy  The parties hereby agree that the
     Liquidated Damages provided in Section 9.4(b) (and the
     rights as referenced in Section 8.1) of this Agreement,
     shall be the sole and exclusive remedies of MedImmune
     against Fluor Daniel and the sole and exclusive liabilities
     of Fluor Daniel to MedImmune in connection with any failure
     or alleged failure to timely perform and/or complete any of
     its obligations under this Agreement, and Fluor Daniel shall
     not have any other or further liabilities in connection with
     the timeliness of its performance under this Agreement.


                           ARTICLE X
                       GENERAL PROVISIONS


10.1 Independent Contractor

     Fluor Daniel shall be an independent contractor with respect
     to the Services to be performed hereunder.  Except as
     hereinabove noted, neither Fluor Daniel nor its
     subcontractors, nor the employees of either, shall be deemed
     to be the servants, employees or agents of MedImmune.

10.2 Safety, Environmental and Legal Compliance

          (a)  Fluor Daniel shall perform all Services and give
          all notices in compliance in all material respects with
          all applicable federal, state and local laws, rules,
          regulations, permits, approvals and ordinances
          including, without limitation, the Food, Drug &
          Cosmetic Act and the rules and regulations promulgated
          thereunder and all environmental laws, rules and
          regulations ("Laws").

          (b)  Anything herein to the contrary notwithstanding,
          title to, ownership of, and legal responsibility and
          liability for any and all "Pre-Existing Contamination"
          shall at all times remain with MedImmune.  Pre-Existing
          Contamination is any hazardous or toxic substance
          present at the Project site which was not brought onto
          such site by Fluor Daniel, its agents or
          subcontractors.  MedImmune releases, and agrees to
          defend, indemnify and hold Fluor Daniel harmless from
          and against any and all liability which may in any
          manner arise or in any way be directly or indirectly
          caused by such Pre-Existing Contamination.

          (c)  Notwithstanding Sections 5.1 and 10.2(a), and any
          other provisions to the contrary, the parties recognize
          that certain legal requirements (including, without
          limitation, environmental, validation, health and
          safety requirements) are imprecise and subject to
          varied interpretation and that therefore Fluor Daniel's
          obligation of designing in accordance with and
          otherwise complying with Laws shall be limited to its
          obligation to design the Project in accordance with
          and/or to otherwise comply with Laws and
          interpretations thereof which are generally known or
          should be known by engineering and construction
          contractors of Fluor Daniel's size, sophistication and
          experience (inclusive, without limitation, experience
          in the design, engineering, procurement, construction
          and validation of biotechnology and/or bioprocessing
          manufacturing facilities)  at the effective date of
          this Agreement (the "Recognized Laws").  Fluor Daniel
          shall modify the Services as necessary to comply with
          changes in the Recognized Laws, provided, however, that
          such modification shall be considered a change in the
          Services under Section 3.2.

10.3 Force Majeure

     Any delays in or failure of performance by MedImmune or
     Fluor Daniel, other than payment of money, shall not
     constitute default hereunder if and to the extent such
     delays or failures of performance are caused by occurrences
     which are unforeseen and are beyond the control of MedImmune
     or Fluor Daniel, as the case may be (after diligence to
     overcome or prevent such occurrences) including, but not
     limited to: acts of God or the public enemy; expropriation
     or confiscation of facilities; compliance with any order or
     request of any governmental authority, unless such order is
     reasonably foreseeable or arises in connection with a
     default hereunder; act of war or rebellion or sabotage or
     damage resulting therefrom; unavoidable fires, floods,
     explosions, or accidents not caused by the negligence or
     willful misconduct of the party seeking force majeure
     treatment; adverse weather patterns which are abnormal for
     the geographic area in which the project is located; or
     riots or strikes or other concerted acts of workmen, whether
     direct or indirect; or any causes, whether or not of the
     same class or kind as those specifically above named, which
     are not reasonably foreseeable at the time the Services were
     commenced and which are not within the control of MedImmune
     or Fluor Daniel respectively, and which by the exercise of
     reasonable diligence, MedImmune or Fluor Daniel are unable
     to prevent.  The Contract Price, the Project Schedule, if
     any, and any scheduled completion date(s) shall be equitably
     adjusted to account for any force majeure event and Fluor
     Daniel shall be reimbursed by MedImmune only for all
     external costs (excluding overhead, general conditions, and
     all costs of Fluor Daniel employees on site or in
     supervisory, administrative, or executive roles) incurred in
     connection with or arising from a force majeure event
     including, but not limited to, those external costs incurred
     in the exercise of reasonable diligence to avoid or mitigate
     a force majeure event.  Fluor Daniel will use reasonable
     efforts to exclude reimbursement of force majeure costs in
     the subcontracts it places on this Project.  Notwithstanding
     any of the foregoing to the contrary, Fluor Daniel hereby
     acknowledges that it is experienced in the construction of
     projects similar to the Project, and that, based on such
     experience, it believes that the Project can be completed
     within the time frame set forth in this Agreement, taking
     into account normal and foreseeable delays in processing
     permits by governmental authorities, normal delays in
     deliveries of materials, normal weather patterns for the
     geographic area in which the Project is located and similar
     occurrences for similar types of projects in the geographic
     area in which the Project is located.  Fluor Daniel may
     terminate this Agreement pursuant to the terms of Section
     8.2 in the event any force majeure event continues for more
     than 90 days (but shall not be paid any of its remaining
     fees or profit in such instance).

10.4 Title to Plans and Specifications

     All drawings and specifications prepared by Fluor Daniel
     pursuant to this Agreement which Fluor Daniel supplies to
     MedImmune in accordance with this Agreement shall become the
     property of MedImmune.  MedImmune shall indemnify, defend
     and hold Fluor Daniel harmless from and against all losses,
     expenses, claims and damages which result from any
     disclosure, use or reuse of any such items other than in
     connection with completing construction, maintenance,
     operation, modification and/or repair of the subject
     Project.

10.5 Patents

     Fluor Daniel agrees to include, as a term or condition of
     each purchase order or other agreement employed by it in the
     performance of the Services, a patent indemnification
     provision extending from the vendor under such purchase
     order or other agreement to MedImmune and Fluor Daniel, and
     to render such assistance to MedImmune as may be reasonably
     required to enforce the terms of such indemnification.

10.6 Secrecy Agreements

     Any agreements or representations between Fluor Daniel and
     MedImmune entered into prior to the effective date hereof
     relating to secrecy or confidentiality of information
     exchanged between Fluor Daniel and MedImmune shall survive
     any completion of the Services hereunder, or any other
     termination or cancellation of this Agreement, in accordance
     with the respective terms and conditions of such other
     agreement or agreements.

10.7 Representations and Remedies

     Fluor Daniel and MedImmune make no representations,
     covenants, warranties or guarantees, express or implied,
     other than those expressly set forth herein.  The parties'
     rights, liabilities, responsibilities and remedies with
     respect to the Services, whether in contract, tort,
     negligence or otherwise, shall be exclusively those
     expressly set forth in this Agreement.

10.8 Damages

     Except only for: (i) the liquidated damages provided in
     Section 9.4(b); (ii) those damages or obligations expressly
     set forth in Sections 8.1; and (iii) such damages that may
     arise from Fluor Daniel's fraud, gross negligence or willful
     misconduct; Fluor Daniel shall in no event be responsible or
     held liable for any indirect, incidental, special or
     consequential damages of any nature whatsoever, including,
     without limitation, liability for loss of use of property,
     loss of profits or other revenue, interest, loss of product,
     increased expenses or business interruption, however the
     same may be caused and in no event shall Fluor Daniel's
     total aggregate liability to MedImmune in connection with
     the Services and/or this Agreement (including any breach
     thereof) exceed the Contract Price.

10.9 Audit and Maintenance of Records

     MedImmune shall have the right to audit and inspect Fluor
     Daniel's records and accounts covering costs reimbursable
     hereunder at all reasonable times during the course of the
     Services and for a period of one (1) year after the earlier
     of (i) acceptance thereof pursuant to Section 9.2, or (ii)
     termination thereof pursuant to Article VIII; provided,
     however, no audit rights shall extend to the make-up of
     fixed rates, unit rates, or of costs which are expressed in
     terms of percentages of other costs.

10.11     Assignment

     This Agreement shall not be assignable by either party
     without the prior written consent of the other party hereto,
     except that (a) it may be assigned without such consent to
     the legal successor of either party, or to a person, firm or
     corporation acquiring all or substantially all of the
     business assets of such party or to a wholly owned
     subsidiary of either party, but any such assignment shall
     not relieve the assigning party of any of its obligations
     under this Agreement.  No assignment of this Agreement shall
     be valid until this Agreement shall have been assumed by the
     assignee.  When duly assigned in accordance with the
     foregoing, this Agreement shall be binding upon and shall
     inure to the benefit of the assignee.

10.12     Subcontracts

     Fluor Daniel may subcontract portions of the Services
     required to be performed by Fluor Daniel to an independent
     subcontractor, provided that such subcontract shall not
     relieve Fluor Daniel of any of its obligations under this
     Agreement.  Fluor Daniel may have portions of the Services
     performed by its affiliated entities or their employees, in
     which event Fluor Daniel shall be responsible for such
     Services and MedImmune shall look solely to Fluor Daniel as
     if the Services were performed by Fluor Daniel.  Each
     subcontract shall be expressly assignable to MedImmune,
     their successors and assigns.

10.13     Notices

     All notices pertaining to this Agreement shall be in writing
     and, if to MedImmune, shall be sufficient when sent
     guaranteed overnight delivery by a nationally recognized
     reputable courier to MedImmune at the following address:

                         MedImmune, Inc.
                         35 West Watkins Road
                         Gaithersburg, MD  20878

                         Attention:  David Mott

     With a copy to:

                         Dewey Ballantine
                         1775 Pennsylvania Ave., N.W.
                         Washington, D.C.  20006

                         Attention:  Howard J. Rosenstock
 
     All notices to Fluor Daniel shall be sufficient when sent
     guaranteed overnight delivery by a nationally recognized
     reputable courier to Fluor Daniel at the following address:

                        Fluor Daniel, Inc.
                        301 Lippincott Centre
                        P.O. Box 950
                        Marlton, NJ  08053

                        Attention: Tom Trevithick

     Notices shall be deemed sent when received.

10.14     Miscellaneous

          (a)  This Agreement shall be governed by and
          interpreted in accordance with the laws of the State of
          Maryland.

          (b)  Headings and titles of Articles, Sections,
          Paragraphs and other parts and subparts of this
          Agreement are for convenience of reference only and
          shall not be considered in interpreting the text of
          this Agreement.  Modifications or amendments to this
          Agreement must be in writing and executed by duly
          authorized representatives of each party.

          (c)  Except as expressly stated to the contrary herein,
          indemnities against, releases from, assumptions of and
          limitations on liability expressed in this Agreement,
          as well as waivers of subrogation rights, shall apply
          even in the event of the fault, negligence or strict
          liability of the party indemnified or released or whose
          liability is limited or assumed or against whom rights
          of subrogation are waived and shall extend to the
          officers, directors, employees, licensors, agents,
          affiliates, partners and related entities of such
          party.

          (d)  In the event that any portion or all of this
          Agreement is held to be void or unenforceable, the
          balance of this Agreement shall remain effective and
          the parties agree to negotiate in good faith to reach
          an equitable agreement as to the unenforceable or void
          provision which shall effect the original intent of the
          parties as set forth in this Agreement.

          (e)  The parties agree to look solely to each other and
          to their permitted assigns under Section 10.11, with
          respect to the performance of this Agreement and the
          Services to be provided hereunder.  This Agreement and
          each and every provision hereof is for the exclusive
          benefit of MedImmune and Fluor Daniel and not for the
          benefit of any third party, and no third party shall be
          entitled to rely upon or enforce the terms of this
          Agreement, or to be a third party beneficiary thereof,
          except to the extent expressly provided in Section
          10.14 (c).

          (f)  The provisions of this Agreement which by their
          nature are intended to survive the termination,
          cancellation, completion or expiration of the
          Agreement, including, but not limited to, indemnifies
          and any expressed limitations of or releases from
          liability, shall continue as valid and enforceable
          obligations of the parties notwithstanding any such
          termination, cancellation, completion or expiration.

          (g)  No failure by either party to insist on
          performance of any term, condition, or instruction, or
          to exercise any right or privilege included in this
          Agreement, shall construe a waiver of any breach hereof
          unless waived in writing by such party and no such
          written waiver of any breach shall constitute a waiver
          of any subsequent breach of any other term, condition,
          instruction, breach, right or privilege.

          (h)  All claims, disputes and other matters in question
          which arise out of or relate to this Agreement
          (including any breach thereof) shall be decided by a
          court of competent jurisdiction without a jury, in the
          state or federal courts in the State of Maryland.

          (i)  The parties hereby agree that regardless of any
          statute of limitations period or any other time within
          which a party is allowed to commence an action under
          Maryland or other applicable law, any legal action or
          proceeding commenced by any party under this Agreement
          against another party in connection with this Agreement
          (including, without limitation, any breach thereof),
          other than an action premised on fraud, must be
          commenced no later than three (3) years after the
          earlier of (i) Completion or (ii) termination or
          cancellation of the Services under Article VIII.

10.15     Fluor Daniel Representations and Warranties

     Fluor Daniel hereby represents and warrants that prior to
     entering into this Agreement, it has examined and inspected
     the site at which the Project will be located and has
     satisfied itself as to the conditions thereof, and reviewed
     all available data and reports pertaining to the site,
     including any environmental reports, soil samples and
     related studies.  Fluor Daniel hereby represents and
     warrants that it possesses the experience, expertise and
     resources necessary to perform the Services under this
     Agreement and to otherwise design, engineer, construct and
     validate the Project.  Fluor Daniel shall employ an
     experienced (in comparable projects) and competent Project
     construction team.  If MedImmune reasonably requests that a
     member of the Project construction team be removed for
     cause, then Fluor Daniel shall make such change promptly.

10.16     Work by MedImmune

     MedImmune shall have access to the Project at all times.
     MedImmune reserves the right to perform work related to, but
     not part of, the Project and to award separate contracts in
     connection with other work at the site.  Fluor Daniel shall
     afford MedImmune's separate contractors reasonable
     opportunity for introduction and storage of their materials
     and equipment for execution of their work.  Any material
     interference with the progress of Fluor Daniel's Services by
     MedImmune or its separate contractors after notice and
     failure to cure within twenty-four hours shall give rise to
     a change order adjusting the Contract Price and Schedule for
     the effects of such interference.


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

MedImmune, Inc.                    Fluor Daniel, Inc.

By:  Wayne T. Hockmeyer            By:  Tom Trevithick
Name Printed: Wayne T. Hockmeyer   Name Printed: Tom Trevithick
Title:  Chairman and Chief         Title:  Vice President,
        Executive Officer                   General Manager



                                                      Exhibit "A"

SCOPE OF SERVICES/FACILITIES



(CONFIDENTIAL TREATMENT HAS BEEN REQUESTED FOR ENTIRE EXHIBIT A)




Exhibit B
Contract:  23619800
MedImmune, Inc.
Frederick, MD - Manufacturing Facility
                                                                           
Fluor Daniel Milestone Payment Schedule Blood
Fractionation, Cell Culture, Sterile Fill & Utilities
ACCELERATED PROJECT SCHEDULE
                                                                       
                                                       Activity     Total
Invoice #      Through           Activities             Value     Invoice $
- ------------- --------  ----------------------------  ----------- ----------
Previous       6/30/96  Flour Daniel Preliminary                            
                       Engineering/Subcontracts/       1,313,359  1,313,359
                       Equipment(invoiced or paid
                       to date- 5/31/96)
                                                                            
Milestone-0             Contract Closing                3,500,000  3,500,000
                                                                            
Milestone-1    7/31/96  Release Mill Order for                              
                       Structural Steel                  200,000  1,063,085
                       Deep Foundations Package                            
                       Issued for Bid                    200,000
                       Obtain Mass Grading Permit        200,000
                       Substantial Start of P&ID's       263,085
                       Site Preparation Package                            
                       Issued for Bid                    200,000
                                                                            
Milestone-2    8/31/96  Site Civil Construction                             
                        Plans Complete                    300,000  1,670,780
                        Foundation Package Issued                           
                        for Bid                           350,000
                        Construction Management                             
                        Mobilized to Project Site         320,780
                        Award Site Preparation                              
                        Contract                          300,000
                        Substantial Start of Rough                          
                        Grading                           400,000
                                                                           
Milestone-3    9/30/96  Issue P&ID's for Approval                           
                                                         500,000  2,710,610
                        Building Foundations                                
                        Contract Awarded                  460,610
                        Structural Steel Fabrication                        
                        Drawings Issued                   600,000
                        Bid & Award Bioreactors           550,000           
                        Rough Grading Completed           600,000           
                                                                           
Milestone-4   10/31/96  Roofing Contract Awarded          600,000  3,068,753
                        Moblization Complete              600,000           
                        Substantial Start of                                
                        Structural Steel                  600,000
                        Deep Foundations Completed        668,753
                        Site Preparation Complete         600,000
                                                                            
Milestone-5   11/30/96  Substantial Start of U/G                            
                       Piping                            653,678  3,053,678
                       Substantial Start of Struct-                        
                       ural Steel for Elevated           
                       Slabs                             600,000 
                       Substantial Start of U/G                            
                       Electrical                        600,000
                       Masonry Contract Awarded          600,000           
                       Substantial Start of Roofing      600,000           
                                                                            
Milestone-6   12/31/96 Building Foundations                       3,470,623
                       Complete                          700,000
                       Structural Steel for                                 
                       Elevated Slabs Complete           700,000
                       Substantial Start of                                
                       Exterior Siding                   700,000
                       Substantial Start of                                
                       Elevated Slabs                    670,623
                       Substantial Start of Slab on                        
                       Grade                             700,000
                                                                            
Milestone-7    1/31/97 Substantial Start of                                
                       Building Electrical               750,000  3,735,216
                       Substantial Start of                                
                       Equipment Installation            750,000
                       Substantial Start of                                
                       Interior Finishes                 750,000
                       Substantial Start of                                
                       Instrumentation                   750,000
                       Substantial Start of HVAC                           
                       Ductwork Installation             735,216
                                                                            
Milestone-8    2/28/97 Structural Steel Complete         750,000  3,700,699
                       Slab On Grade Complete            750,000           
                       U/G Piping Complete               750,000           
                       Elevated Slabs Complete           750,000           
                       Equipment Foundations &                             
                       Platforms Complete                700,699
                                                                            
Milestone-9    3/31/97 Roofing Complete                  600,000  3,027,993
                       Exterior Finishes Complete        600,000           
                       Building Dried In                 600,000           
                       Substantial Start of Fire         627,993           
                       Protection IQ/OQ Development
                       Complete                          600,000           
                                                                            
Milestone-10   4/30/97 Paving/Landscaping Contract                         
                       Awarded                           600,000  2,894,999
                       HVAC Ductwork 50% Complete        600,000
                       Fire Protection 50% Complete      600,000
                       Building Electrical 50% Complete  600,000
                       Substantial Start of Cold                      
                       Boxes Installation                494,999
                                                                            
Milestone-11   5/31/97 Fire Protection Complete -                          
                       Except Heads                      550,000  2,407,894
                       Process Electrical 50%                              
                       Complete                          550,000
                       Equipment Installation 50%                          
                       Complete                          507,894
                       Process & Utility Piping 50%                        
                       Complete                          500,000
                       Instrumentation Installation                        
                       50% Complete                      300,000
                                                                            
Milestone-12   6/30/97 Substantial Start of              600,000  2,439,936
                       Painting
                       Landscape/Site Paving                              
                       Contract Awarded                  500,000
                       Interior Architectural 50%                          
                       Awarded                           500,000
                       Installation of "Cold Boxes"                        
                       Complete                          539,936
                       Equipment Installation 75%                          
                       Complete                          300,000
                                                                            
Milestone-13   7/31/97 Substantial Start of                                
                       Validation Field Service          553,032  2,353,032
                       Building Electrical Complete      500,000           
                       Substantial Start of              500,000           
                       Landscape/Site Paving
                       HVAC Installation Complete        500,000           
                       Substantial Start of                                
                       Insulation                        300,000
                                                                            
Milestone-14   8/31/97 Equipment Installation                              
                       Complete                          200,000  1,142,674
                       Process Electrical Complete       200,000           
                       Validation Services - I/Q/OQ                        
                       20% Complete                      242,674
                       Substantial Start of Start-                         
                       Up Services                       300,000
                       HVAC Testing And Balancing                          
                       Complete                          200,000
                                                                            
Milestone-15   9/30/97 Manufacturing Facility                              
                       Mechanically Complete              90,000    404,876
                       Insulation Complete                90,000           
                       Instrumentation Complete           90,000           
                       Interior Architectural                              
                       Finishes Complete                  90,000
                       Validation Services IQ/OQ                           
                       40% Complete                       44,876
                                                                            
Milestone-16  10/31/97 Validation Services - IQ/OQ                         
                       60% Complete                       92,994    185,988
                       Start-Up 50% Complete                               
                                                          92,994
                                                                            
Milestone-17  11/30/97 Validation Services - IQ/OQ                         
                       80% Complete                      176,251    176,251
                       Start-up Services Complete                          
                                                                            
Milestone-18  12/31/97 Project Validation Complete       179,554    179,554
                                                                  ----------
                                                                  42,500,000
                                                                  ==========



                           EXHIBIT B-1

       LETTER OF CREDIT DRAFT IN LIEU OF RETENTION SAMPLE


     ISSUING BANK:                 A1 CREDIT BANK
                                   COMPLETE ADDRESS


     BENEFICIARY:                  FULL CLIENT NAME
                                   COMPLETE ADDRESS
                                   ATTN:  CONTACT NAME


AT THE REQUEST AND FOR THE ACCOUNT OF (FLUOR ENTITY),
_____________________, WE HEREBY ISSUE THIS IRREVOCABLE STANDBY
LETTER OF CREDIT IN THE AMOUNT OF __________________________
($________), WHICH IS AVAILABLE AGAINST SIGHT DRAFT(S) OF THE
BENEFICIARY BEARING THE CLAUSE "DRAWN UNDER IRREVOCABLE STAND-BY
LETTER OF CREDIT NUMBER _______________" AND ACCOMPANIED BY THE
FOLLOWING DOCUMENTS:

1.   A CERTIFICATE DATED AND SIGNED BY A PURPORTED AUTHORIZED
     OFFICER OF THE BENEFICIARY STATING:  "WE CERTIFY THAT THE
     AMOUNT OF OUR DRAWING UNDER LETTER OF CREDIT NUMBER
     ______________ IS DUE US AS (FLUOR ENTITY) IS IN DEFAULT OF
     ITS OBLIGATIONS WITH US UNDER CONTRACT NO. ____________
     DATED _________________________."

2.   A CERTIFICATE DATED AND SIGNED BY A PURPORTED AUTHORIZED
     OFFICER OF THE BENEFICIARY STATING:  "WE CERTIFY THAT THE
     AMOUNT OF THE DRAFT PRESENTED DOES NOT EXCEED THE GREATER OF
     THE AMOUNT ALLOWED PURSUANT TO ARTICLE _____, PARAGRAPH ____
     OF SAID CONTRACT OR THE AMOUNT IN DISPUTE LESS ANY AMOUNTS
     PREVIOUSLY DRAWN UNDER THIS LETTER OF CREDIT.

3.   A COPY OF THE LETTER DATED AT LEAST SEVENTY-TWO (72) HOURS
     PRIOR TO THE DRAWING UNDER THIS LETTER OF CREDIT ADDRESSED
     TO (FLUOR ENTITY) READING AS FOLLOWS:  "WE HEREBY INDICATE
     OUR INTENTION TO DRAW UNDER ___________ BANK LETTER OF
     CREDIT NO. ___________."

WE ENGAGE WITH YOU THAT ALL DRAFTS DRAWN UNDER AND IN COMPLIANCE
WITH THE TERMS OF THIS LETTER OF CREDIT WILL BE DULY HONORED UPON
DELIVERY OF DOCUMENTS AS SPECIFIED IF PRESENTED AT THIS OFFICE ON
OR BEFORE DECEMBER 31, 1998.

PARTIAL DRAWINGS ARE PERMITTED.

ALL AMOUNTS DRAWN IN COMPLIANCE WITH THE TERMS AND CONDITIONS OF
THIS LETTER OF CREDIT WILL BE TRANSFERRED BY WIRE TRANSFER INTO
THE BENEFICIARY'S ACCOUNT NUMBER _____________ IN
_____________________________(BANK).  ABA
NO.______________________________________(CITY),_________________
____(STATE).

THIS LETTER OF CREDIT IS SUBJECT TO THE UNIFORM CUSTOMS AND
PRACTICES FOR DOCUMENTARY CREDITS (1983 REVISION).  INTERNATIONAL
CHAMBER OF COMMERCE PUBLICATION 500.


                          EXHIBIT "C"

                 SCHEDULE OF REIMBURSABLE COSTS




I. LABOR AND CERTAIN OVERHEAD COSTS

   A.   Home Office and Validation Personnel

       The services of all Fluor Daniel personnel, including of
     Engineering, Validation, and Home Office Support for
     Construction [other than (i) Field Salaried Personnel and
     (ii) Field Craft Personnel], which personnel are
     hereinafter referred to as "Home Office Personnel", will be
     invoiced on an hourly basis at the billing rates set forth
     in the attached Home Office Labor Rate Schedule.  These
     rates will increase by six percent (6%) on June 1, 1997,
     and will be subject to further revision on each year
     thereafter.


   B.  Field Personnel

     1.  Field Salaried Personnel

       The services of all Fluor Daniel salaried and contract
     agency personnel who are permanently assigned to the
     Project site, which personnel are hereinafter referred to
     as "Field Salaried Personnel", will be invoiced on an
     hourly basis at their actual base compensation multiplied
     by a multiplier of (CONFIDENTIAL TREATMENT HAS BEEN
     REQUESTED).  This multiplier will be subject to revision on
     June 1, 1997 and on each year thereafter.

     2. Field Craft Personnel

       The services of all of Fluor Daniel's hourly personnel
     who are permanently assigned to the Project Site, which
     personnel are hereinafter referred to as "Field Craft
     Personnel", will be invoiced on an hourly basis at their
     actual base compensation multiplied by a multiplier of
     (CONFIDENTIAL TREATMENT HAS BEEN REQUESTED).  This
     multiplier will be subject to revision on June 1, 1997 and
     on each year thereafter.


       C.     Certain Home Office Overhead Costs

       The costs set forth above for Home Office Personnel
     include the following overhead costs:

         Payroll taxes and insurance;
         Group hospitalization insurance;
         Employer's liability insurance;
         Vacation, holiday and sick leave time;
         Normal home and branch office rents;
         Home Office personnel administration;
         Home Office light, heat, water, local telephone;
         Home Office furniture and equipment;
         Home Office general office supplies;
         Home Office general business taxes and licenses; and
         Non-project accounting and in-house legal
           services rendered by internal Fluor Daniel personnel.


An additional charge of $(CONFIDENTIAL TREATMENT HAS BEEN
REQUESTED) per hour will be billed for all hours worked at the
home office by Home Office Personnel to cover the following home
office overhead costs:

         Word Processing equipment
         Blueprinting and other reproductions
         Shipping and postage costs
         Personal computer time and program charges
         Telegrams, teletype, facsimiles and long
            distance telephone calls
         Consumable engineering supplies


II.   OTHER REIMBURSABLE COSTS (NON-LABOR)

   Owner shall pay Fluor Daniel, at actual or scheduled cost,
   for the following costs reasonably incurred by Fluor Daniel
   in connection with the Purchasing Agreement:

       i)     Materials and Equipment.  The cost of materials,
       machinery, equipment, supplies, parts and miscellaneous
       services purchased by Fluor Daniel.

       ii)    Transportation of Materials, Machinery and
       Equipment.  The cost of all transportation expenses for
       materials, machinery, tools and equipment including the
       cost of loading, hauling, unloading and insurance.

       iii)   Travel and Relocation Expenses.  The cost of
       transportation, travel, relocation and/or per diem
       expenses and other related expenses for Fluor Daniel
       personnel in accordance with Fluor Daniel=s established
       policies.

       iv)    Taxes.  The cost of any duties, taxes or licenses,
       other than taxes on Fluor Daniel's net income.


       v)     Compliance With Laws.  All costs (including
       attorneys fees) incurred in connection with compliance
       with statutes, rules, regulations, ordinances, orders and
       other laws.

       vi)    Purchase Orders and Contracts.  All costs of and
       arising out of subcontracts, purchase orders, contracts
       and other agreements entered into by Fluor Daniel.

       vii)   Audits, Monitoring and Accounting.  The cost of
       audits and similar programs monitoring the financial or
       other aspects of the Purchase Agreement.

       viii)Litigation and Related Costs.  The cost of
       attorneys' fees, costs, settlements and judgements
       incurred in connection with any labor or commercial
       matters, litigation, claims or disputes (except between
       Owner and Fluor Daniel) arising out of or in connection
       with the Purchase Agreement.

       ix)    Miscellaneous Expense.  Miscellaneous expenses,
       such as custom forms, freight, express, duties, and other
       costs and expenses incurred in connection with the
       Purchasing Agreement.

                HOME OFFICE LABOR RATE SCHEDULE


The services of Home Office Personnel utilized for the Services
will be invoiced on an hourly basis at the following hourly
billing rates:



               General Hourly Description       Billing Rates
  ---------------------------------------------------------------
Billing                                                   
 Code              Billing Classification            Labor Rate
   01          Information Records Clerk*                *
   02          Word Processing Technician I*             *
   03          Engineering Aide I*                       *
   04          Secretary II*                             *
   05          Industrial Relations Tech II*             *
   06          Lead Data Control Tech*                   *
   07          Procurement Specialist I*                 *
   08          Sr. Engineering Technician II*            *
   09          Procurement specialist II*                *
   10          Construction Technician II*               *
   11          Senior Inspector*                         *
   13          Accountant I                              *
   14          Associate Engineer I                      *
   15          Engineering coordinator I                 *
   16          Associate Engineer II                     *
   17          Administrative Manager                    *
   18          Engineer                                  *
   19          Architect II                              *
   20          Engineer II                               *
   21          Senior Engineer                           *
   22          Principal Engineer                        *
   23          Director                                  *
   90          Drafter I*                                *
   91          Drafter II*                               *
   92          Drafter III*                              *
   93          Drafter IV*                               *
   94          Designer I*                               *
   95          Designer II*                              *
   96          Senior Designer II*                       *
   97          Principal Designer*                       *
   98          Design Supervisor                         *
   99          Senior Design Supervisor                  *


Hours worked for the project in excess of 8 hours per day or 40
hours per week by an individual in classifications with a billing
code with an asterisk will be invoiced at the rate shown above
plus of (CONFIDENTIAL TREATMENT HAS BEEN REQUESTED) percent; all
hours worked for the project by individuals in other
classifications will be invoiced at the rate shown above.
Contract agency employees will be billed at a of (CONFIDENTIAL
TREATMENT HAS BEEN REQUESTED) multiplier of the actual amount
invoiced to Fluor Daniel.

           *CONFIDENTIAL TREATMENT HAS BEEN REQUESTED
                         





                                              EXHIBIT 10.65
                                
                                
         PORTIONS OF THE FOLLOWING DOCUMENT HAVE DELETED
              DUE TO THE CONFIDENTIAL NATURE OF THE
                 INFORMATION CONTAINED THEREIN.
            SUCH DELETIONS ARE INDICATED AS FOLLOWS:
           (CONFIDENTIAL TREATMENT HAS BEEN REQUESTED)
                                
           THE CONFIDENTIAL INFORMATION HAS BEEN FILED
                 SEPARATELY WITH THE COMMISSION


                 RESEARCH AND LICENSE AGREEMENT

     This Agreement, effective as of November 1, 1996 ("EFFECTIVE

DATE"), by and between OraVax Merieux Co. ("O-M") having an

address at 38 Sidney Street, Cambridge, MA 02139, Merieux OraVax

S.N.C. ("M-O") having an address at 58. avenue Leclerc, 69007

Lyon, France ("O-M" and "M-O" are individually and collectively

referred to as "HPC") and MedImmune, Inc., a Delaware Corporation

having offices at 35 West Watkins Mill Road, Gaithersburg, MD

20878 ("MEDIMMUNE") and Human Genome Sciences, Inc., a Delaware

corporation having offices at 9410 Key West Avenue, Rockville, MD

20850 ("HGS").

     WHEREAS, HPC, MEDIMMUNE and HGS each have substantial

knowledge and expertise in and own or have rights to certain

technology relating to vaccines, genes, gene sequencing, protein

expression and purification; and

     WHEREAS, the PARTIES desire to enter into a research and

licensing arrangement in an effort to develop vaccines against

Helicobacter pylori ("H. pylori").

     NOW THEREFORE, in consideration of the mutual promises and

other good and valuable consideration, the PARTIES agree as

follows:

                    SECTION 1 - DEFINITIONS.

     The terms used in this Agreement have the following

     meaning:

1.1  "AFFILIATE" shall mean, with respect to any person or

     entity, (i) any other person or entity of which the

     securities or other ownership interests representing fifty

     per cent (50%) or more of the equity or fifty percent (50%)

     or more of the ordinary voting power or fifty percent (50%)

     or more of the general partnership interest are, at the

     time such determination is being made, owned, Controlled or

     held, directly or indirectly, by such person or entity, or

     (ii) any other person or entity which, at the time such

     determination is being made, is Controlling, Controlled by

     or under common Control with, such person or entity.  As

     used herein, the term "Control" whether used as a noun or

     verb, refers to the possession, directly or indirectly, of

     the power to direct, or cause the direction of, the

     management or policies of a person or entity whether

     through the ownership of voting securities, by contract or

     otherwise.

1.2  "CONFIDENTIAL INFORMATION" shall mean know-how, technology,

     inventions, technical information, software, data,

     biological materials and the like which are owned or

     controlled by the disclosing PARTY or which that PARTY is

     obligated to maintain in confidence, provided, however,

     that information disclosed by Dr. J.F. Tomb during a

     presentation at the "9th International Workshop on

     Gastroduodenal Pathology and Helicobacter pylori" held

     October 16-19, 1996 in Copenhagen (the "TOMB DISCLOSURE")

     will be excluded from the definition of CONFIDENTIAL

     INFORMATION.

1.3  "FIELD" means the treatment or prevention of infection or

     disease caused by H. pylori by use of a VACCINE.

1.4  "GENE" means DNA (or a portion thereof) of H. pylori.

1.5  "HGS" shall mean Human Genome Sciences, Inc.

1.6  "JOINT INVENTIONS" shall mean inventions conceived and

     reduced to practice during the term of this Agreement

     jointly by employees or others acting on behalf of HPC or

     its AFFILIATES and by employees or others acting on behalf

     of MEDIMMUNE or HGS, as the case may be, or their

     AFFILIATES.

1.7  "JOINT PATENTS" shall mean (a) all patent applications

     hereafter filed or having legal force in any country owned

     jointly by MEDIMMUNE or HGS as the case may be and HPC,

     which claim a composition, method or process relating to a

     JOINT INVENTION, together with any and all patents that

     have issued or in the future issue therefrom, and (b) all

     related divisionals, continuations, continuations-in-part,

     reissues, renewals or extensions or foreign counterparts to

     any such patents and patent applications.

1.8  "HGS PATENTS" shall mean all patents and patent

     applications which claim HGS TECHNOLOGY owned by HGS or

     which has been licensed to HGS or JOINT PATENTS in which

     HGS has an ownership interest.  Included within the

     definition of HGS PATENTS are all continuations,

     continuations-in-part, divisions, reissues, renewals,

     extensions or foreign counterparts thereof.

1.9  "HGS TECHNOLOGY" shall mean (i) GENES and/or expression

     products thereof (including sequence and function) and (ii)

     biological and genomic information with respect to GENES in

     each case which have been developed by or on behalf of HGS

     prior to or within one year after the EFFECTIVE DATE and

     which is owned by HGS in whole or in part, provided,

     however, that for the purposes of determining the royalty

     due under Section 3.2(b) hereof, HGS TECHNOLOGY shall not

     include such GENES, expression products, or biological and

     genomic information with respect to such GENES that were

     developed by or otherwise known to HPC prior to the

     EFFECTIVE DATE.

1.10 "LICENSED PATENTS" means MEDIMMUNE PATENT(S) and/or HGS

     PATENT(S) and/or JOINT PATENTS.

1.11 "LICENSED TECHNOLOGY" means MEDIMMUNE TECHNOLOGY and/or HGS

     TECHNOLOGY and/or JOINT INVENTIONS.

1.12 "LICENSED TERRITORY" means all countries of the world.

1.13 "MEDIMMUNE PATENT(S)" shall mean all patents and patent

     applications which claim MEDIMMUNE TECHNOLOGY owned by

     MEDIMMUNE or which MEDIMMUNE has licensed from HGS or JOINT

     PATENTS in which MEDIMMUNE has an ownership interest.

     Included within the definition of MEDIMMUNE PATENTS are all

     continuations, continuations-in-part, divisions, reissues,

     renewals, extensions or foreign counterparts thereof.

1.14 "MEDIMMUNE TECHNOLOGY" shall mean (i) GENES and/or

     expression products thereof (including sequence and

     function) and (ii) biological and genomic information with

     respect to GENES in each case which has been developed by

     or on behalf of MEDIMMUNE prior to or within one year after

     the EFFECTIVE DATE and which is owned by MEDIMMUNE in whole

     or in part and/or which have been licensed by MEDIMMUNE

     from HGS, provided, however, that for the purposes of

     determining the royalty due under Section 3.2(b) hereof,

     MEDIMMUNE TECHNOLOGY shall not include such GENES,

     expression products, or biological and genomic information

     with respect to such GENES that were developed by or

     otherwise known to HPC prior to the EFFECTIVE DATE.

1.15 "NET SALES PRICE" means the total amount invoiced by HPC,

     its AFFILIATES or its licensees for sale of PRODUCT, less

     transportation charges and insurance, sales taxes, use

     taxes, excise taxes, value added taxes, customs duties or

     other imposts, in each case as separately invoiced, normal

     and customary quantity and cash discounts, rebates granted

     and disallowed reimbursements and allowances and credit on

     account of rejection or return of PRODUCT.

     In the event a sale is made between HPC and an AFFILIATE(S)

     for re-sale then NET SALES PRICE for determining a payment

     under this Agreement shall be the higher of (i) net sales

     to the AFFILIATES calculated in the manner of NET SALES

     PRICE, or (ii) the NET SALES PRICE of the AFFILIATE(S) to

     an independent third party.

1.16 "PARTY" shall mean O-M, M-O, MEDIMMUNE or HGS.

1.17 "PATENT(S)" means individually and collectively MEDIMMUNE

     PATENTS, HPC PATENTS, HGS PATENTS and JOINT PATENTS.

1.18 "HPC PATENT(S)" shall mean all patents and patent

     applications which claim HPC TECHNOLOGY owned by HPC or

     JOINT PATENTS in which HPC has an ownership interest.

     Included within the definition of HPC PATENTS are all

     continuations, continuations-in-part, divisions, reissues,

     renewals, extensions or foreign counterparts thereof.

1.19 "HPC TECHNOLOGY" means GENES and/or expression products

     thereof (including sequence and function), any process,

     use, article of manufacture, composition of matter,

     information (including biological and genomic information

     with respect to GENES), data and materials, whether

     patentable or not, which incorporates or is based on or

     uses or is derived by use of LICENSED TECHNOLOGY and which

     is developed by or on behalf of HPC or any of their

     collaborators or licensees during the term of this

     Agreement, provided, however, that for the purposes of

     determining the royalty due under Section 3.2(b) hereof,

     HPC TECHNOLOGY shall not include any GENE, expression

     product, process, use, article of manufacture, composition

     of matter, information, data or materials that were

     developed by or otherwise known to HPC prior to the

     EFFECTIVE DATE.

1.20 "PRODUCT(S)" shall mean any product, process, method,

     substance, device, composition, or service which (i)

     incorporates or is based on or uses or is derived by use of

     LICENSED TECHNOLOGY and/or HPC TECHNOLOGY and/or (ii) is

     covered by a LICENSED PATENT and/or (iii) is covered by a

     HPC PATENT.  An incidental or insubstantial use of LICENSED

     TECHNOLOGY or HPC TECHNOLOGY shall not cause a product,

     process, method, substance, device, composition or service

     to become a PRODUCT.

1.21 "VACCINE" means a substance(s) utilized for active

     immunization against infectious agents.

1.22 "VALID CLAIM" means (i) a claim of a pending patent

     application or, (ii) a claim of an issued patent which has

     not lapsed or become abandoned or been declared invalid or

     unenforceable by a court of competent jurisdiction or an

     administrative agency from which no appeal can be or is

     taken.

                SECTION 2 - GRANTS AND COVENANTS

2.1  Subject to the terms and conditions of this Agreement,

     MEDIMMUNE grants to HPC an exclusive, worldwide royalty

     free (except for the license fee payments set forth in

     Section 3.1) license under MEDIMMUNE TECHNOLOGY, MEDIMMUNE

     PATENTS and MEDIMMUNE'S ownership interest in JOINT

     INVENTIONS and JOINT PATENTS to perform research and

     development of PRODUCTS for use in the FIELD.  HPC shall

     have the right to grant sublicenses only as provided in

     Paragraph 2.6.

2.2  Subject to the terms and conditions of this Agreement,

     MEDIMMUNE grants to HPC an exclusive, sublicensable,

     worldwide royalty-bearing license in the FIELD under

     MEDIMMUNE TECHNOLOGY, MEDIMMUNE PATENTS and MEDIMMUNE'S

     ownership interest in JOINT INVENTIONS and JOINT PATENTS to

     make, have made, use, sell, import and export PRODUCTS in

     the FIELD.  HPC shall have the right to grant sublicenses

     only as provided in Paragraph 2.6.

2.3  Subject to the terms and conditions of this Agreement, HGS

     grants to HPC an exclusive, worldwide, royalty free (except

     for the license fee payments set forth in Section 3.1)

     license under HGS TECHNOLOGY, HGS PATENTS and HGS'

     ownership interest in JOINT INVENTIONS and JOINT PATENTS,

     to perform research and development of PRODUCTS for use in

     the FIELD.  HPC shall have the right to grant sublicenses

     only as provided in Paragraph 2.6.

2.4  Subject to the terms and conditions of this Agreement, HGS

     grants to HPC an exclusive, sublicensable, worldwide

     royalty-bearing license in the FIELD under HGS TECHNOLOGY,

     HGS PATENTS and HGS' ownership interest in JOINT INVENTIONS

     and JOINT PATENTS to make, have made, use, sell, import and

     export PRODUCTS in the FIELD.  HPC shall have the right to

     grant sublicenses only as provided in Paragraph 2.6

2.5  (a)  During the term of this Agreement, HPC agrees to use

     and to grant rights to HPC TECHNOLOGY and HPC PATENTS, in

     each case and with respect to HPC'S interest in JOINT

     INVENTIONS and JOINT PATENTS only in the FIELD or only as

     otherwise permitted by this Agreement.

     (b)  During the term of this Agreement, HGS agrees to use

     and to grant rights to HGS TECHNOLOGY and HGS PATENTS, in

     each case and with respect to HGS' interest in JOINT

     INVENTIONS and JOINT PATENTS, only outside the FIELD and

     only as permitted by this Agreement.

     (c)  During the term of this Agreement, MEDIMMUNE agrees to

     use and to grant rights to MEDIMMUNE TECHNOLOGY and

     MEDIMMUNE PATENTS, in each case and with respect to

     MEDIMMUNE'S interest in JOINT INVENTIONS and JOINT PATENTS,

     only outside the FIELD and only as permitted by this

     Agreement.

     (d)  During and after the term of this Agreement, HPC

     agrees to use MEDIMMUNE TECHNOLOGY and MEDIMMUNE PATENTS

     and HGS TECHNOLOGY and HGS PATENTS and JOINT INVENTIONS and

     JOINT PATENTS only as licensed and permitted hereunder.

     (e)  Except as set forth in Section 9.1(b) of this

     Agreement, neither PARTY will use, license or sublicense

     their respective interest in the JOINT INVENTIONS or JOINT

     PATENTS outside the FIELD without the express written

     consent of the other PARTY having an interest in such JOINT

     INVENTION or JOINT PATENT.

2.6  The rights and licenses granted to HPC by MEDIMMUNE and HGS

     under this Agreement, and rights to HPC TECHNOLOGY and HPC

     PATENTS, JOINT INVENTIONS and JOINT PATENTS are licensable

     and/or transferable by HPC to a third party only with

     respect to a PRODUCT in the FIELD, and, except for any

     implied sublicense attaching to the commercial sale or

     distribution of the PRODUCTS, pursuant to an agreement in

     which the third party(ies) agree(s) (i) to covenants and

     obligations which limit the use of PRODUCTS, MEDIMMUNE

     TECHNOLOGY, MEDIMMUNE PATENTS, HGS TECHNOLOGY, HGS PATENTS,

     JOINT INVENTIONS, JOINT PATENTS, HPC TECHNOLOGY and HPC

     PATENTS which are essentially identical to the covenants

     and obligations of HPC to MEDIMMUNE and HGS under this

     Agreement and (ii) to obligations identical to Sections 5,

     6 and 8 of this Agreement.  Upon termination of this

     Agreement for any reason, any sublicense granted by HPC

     hereunder not then in default shall remain in force and

     effect in accordance with its terms, provided, however,

     that any sublicenses granted by HPC under this Agreement

     shall provide for termination or assignment to MEDIMMUNE

     and/or HGS, as the case may be, upon termination of this

     Agreement.

2.7  HPC shall be solely responsible for the licensing,

     manufacturing, marketing and sale of all PRODUCTS in the

     FIELD.

                      SECTION 3 - PAYMENTS

3.1  In partial consideration of the rights granted to HPC

hereunder, HPC shall pay to MEDIMMUNE as a license fee of up to

(CONFIDENTIAL TREATMENT HAS BEEN REQUESTED) U.S. dollars ($U.S.

(CONFIDENTIAL TREATMENT HAS BEEN REQUESTED)) which shall be due

and payable in three payments as follows: (i) a payment of

$(CONFIDENTIAL TREATMENT HAS BEEN REQUESTED) which is due and

payable on or before December 6, 1996; (ii) a second payment of

$(CONFIDENTIAL TREATMENT HAS BEEN REQUESTED) which is due and

payable five (5) months after the EFFECTIVE DATE (the "SECOND

PAYMENT DATE"), provided, however, that such second payment of

$(CONFIDENTIAL TREATMENT HAS BEEN REQUESTED) shall be pro-rated

at a rate of $(CONFIDENTIAL TREATMENT HAS BEEN REQUESTED) per

month for each month, or part thereof, prior to the SECOND

PAYMENT DATE that any of the HGS TECHNOLOGY or MEDIMMUNE

TECHNOLOGY no longer qualifies as CONFIDENTIAL INFORMATION due to

disclosure of such HGS TECHNOLOGY or MEDIMMUNE TECHNOLOGY by HGS,

MEDIMMUNE or TIGR, with it being expressly understood that the

TOMB DISCLOSURE is not a disclosure of such HGS TECHNOLOGY or

MEDIMMUNE TECHNOLOGY; and (iii) a final payment of $(CONFIDENTIAL

TREATMENT HAS BEEN REQUESTED) which is due and payable upon the

issuance of the first United States, Japanese or European Union

country PATENT.  All payments to be made hereunder are payable

within 10 days of its due date and shall be by wire transfer or

other commercially reasonable method of transfer of immediately

available funds to an account designated by MEDIMMUNE.

3.2  HPC shall pay to MEDIMMUNE a royalty on the NET SALES PRICE

     of PRODUCTS sold by HPC, its AFFILIATES or its licensees as

     follows:

     (a)For PRODUCTS covered by a VALID CLAIM of the PATENTS

         where manufactured, used or sold, the royalty shall be

         (CONFIDENTIAL TREATMENT HAS BEEN REQUESTED)% of NET

         SALES PRICE.  No royalty shall be due under this

         Section 3.2(a) on any PRODUCTS covered only by a VALID

         CLAIM of a pending PATENT which has not issued seven

         (7) years following its earliest priority date (the

         "CUT-OFF DATE"), provided, however, that royalties

         shall continue to accrue for up to three (3) years

         after the CUT-OFF DATE while such PATENT remains

         pending, and such accrued royalty shall become payable

         only upon the issuance of such pending PATENT within

         such 3-year period.

     (b)For PRODUCTS which are not covered by a VALID CLAIM of

         PATENTS where manufactured, used or sold, the royalty

         shall be (CONFIDENTIAL TREATMENT HAS BEEN REQUESTED)%

         of NET SALES PRICE.

3.3  HPC shall make the following milestone payments to

     MEDIMMUNE for PRODUCTS, which milestone payment shall be

     due and payable within thirty (30) days after the milestone

     event is achieved by or on behalf of HPC or an AFFILIATE of

     HPC or a licensee of HPC:

         (i) (CONFIDENTIAL TREATMENT HAS BEEN REQUESTED)U.S.

     Dollars ($(CONFIDENTIAL TREATMENT HAS BEEN REQUESTED)) upon

     the first filing of a Product License Application in the

     United States or equivalent outside the United States for

     the first PRODUCT;

         (ii) (CONFIDENTIAL TREATMENT HAS BEEN REQUESTED)U.S.

     Dollars ($(CONFIDENTIAL TREATMENT HAS BEEN REQUESTED)) when

     cumulative NET SALES PRICE of PRODUCT(S) sold by HPC and/or

     its AFFILIATES and/or licensees  exceed (CONFIDENTIAL

     TREATMENT HAS BEEN REQUESTED) U.S. Dollars ($(CONFIDENTIAL

     TREATMENT HAS BEEN REQUESTED)); and

         (iii) (CONFIDENTIAL TREATMENT HAS BEEN REQUESTED)U.S.

     Dollars ($(CONFIDENTIAL TREATMENT HAS BEEN REQUESTED)) when

     cumulative NET SALES PRICE of PRODUCT(S) sold by HPC and/or

     its AFFILIATES and/or licensees exceed (CONFIDENTIAL

     TREATMENT HAS BEEN REQUESTED) U.S. Dollars ($(CONFIDENTIAL

     TREATMENT HAS BEEN REQUESTED)).  The milestone payments

     provided in this Section 3.3 shall only be made once and

     shall not be creditable or refundable.

3.4  Royalty obligations under this Agreement and any agreements

     that HPC shall enter into with a licensee with respect to

     PRODUCT shall terminate on a country-by-country and PRODUCT-

     by-PRODUCT basis on the later of (i) ten (10) years after

     first country-wide launch of the first PRODUCT in each

     country or (ii) expiration of the last to expire PATENT

     which covers the making, having made, importing, exporting,

     offering to sell or using or selling of each PRODUCT in

     each country.

3.5  All payments to be made hereunder shall be in United States

     Dollars and by wire transfer, or other commercially

     reasonable method of transfer, of immediately available

     funds to an account designated by MEDIMMUNE.

3.6  No multiple royalties shall be payable because any PRODUCT,

     or its manufacture or sale are or shall be covered by more

     than one PATENT licensed under this Agreement.

          SECTION 4 - TRANSFER OF LICENSED TECHNOLOGY

4.1  MEDIMMUNE and HGS, as the case may be, shall promptly

     transfer the LICENSED TECHNOLOGY described in Exhibit A,

     attached hereto and made a part hereof which is

     CONFIDENTIAL INFORMATION to HPC.

4.2  During the first year of this Agreement MEDIMMUNE or HGS as

     the case may be, at HPC's reasonable request and expense

     shall provide to HPC reasonable technical assistance with

     respect to LICENSED TECHNOLOGY in order to assure that HPC

     is able to access and use the LICENSED TECHNOLOGY

     transferred under Section 4.1.

4.3  HPC agrees to maintain security measures for LICENSED

     TECHNOLOGY which are similar to the measures currently

     employed by HPC to safeguard its own CONFIDENTIAL

     INFORMATION.

4.4  For the purpose of facilitating an understanding of the

     research activities in the FIELD conducted by each party

     hereunder, the PARTIES will permit duly authorized

     employees or representatives of the other to visit its

     facilities where the research is conducted, at reasonable

     times and with reasonable notice.

4.5  The transfer of one PARTY's materials to the other PARTY

     pursuant to this Section shall not be considered to

     transfer title to the materials or their progeny, but shall

     be considered a bailment for the benefit of both PARTIES.



                  SECTION 5 - CONFIDENTIALITY.

5.1  During the term of this Agreement, it is contemplated that

     each PARTY will disclose to the other CONFIDENTIAL

     INFORMATION.  Each PARTY agrees to retain the other party's

     CONFIDENTIAL INFORMATION in confidence and not to disclose

     any such CONFIDENTIAL INFORMATION to a third PARTY without

     the prior written consent of the disclosing PARTY and to

     use the other PARTY's CONFIDENTIAL INFORMATION only for the

     purposes of this Agreement.  In addition to the obligations

     of confidentiality set forth above in this Section 5.1, HPC

     and MEDIMMUNE each agree (i) not to publish LICENSED

     TECHNOLOGY or HPC TECHNOLOGY which is CONFIDENTIAL

     INFORMATION prior to a publication of HGS TECHNOLOGY by

     TIGR, and (ii) that investigators from TIGR shall be

     included as co-authors of such publications by HPC or

     MEDIMMUNE if reasonably warranted.

5.2  The obligations of confidentiality of Section 5.1 and the

     definition of CONFIDENTIAL INFORMATION will not apply to

     data, information and materials that:

     (a)was known to the receiving PARTY or generally known to

         the public prior to its disclosure hereunder; or

     (b)subsequently becomes known to the public by some means

         other than a breach of this Agreement, or, with respect

         to HGS TECHNOLOGY and MEDIMMUNE TECHNOLOGY,

         subsequently becomes known to the public by disclosure

         or publication by HGS, MEDIMMUNE or The Institute for

         Genomic Research ("TIGR");

     (c)is subsequently disclosed to the receiving PARTY by a

         third party having a lawful right to make such

         disclosure;

     (d)is required by law or bona fide legal process to be

         disclosed, provided that the PARTY required to make the

         disclosure takes all reasonable steps to restrict and

         maintain confidentiality of such disclosure and

         provides reasonable notice to the PARTY providing the

         disclosure; or

     (e)is approved for release by the PARTIES, or

     (f)is independently developed by the employees or agents

         of either PARTY without any knowledge of the

         CONFIDENTIAL INFORMATION provided by the other PARTY.

5.3  Notwithstanding Paragraph 5.1, HPC may disclose and/or

     provide LICENSED TECHNOLOGY to a third party who (i)

     receives a license from HPC to LICENSED TECHNOLOGY in

     conjunction with a license to a PRODUCT in the FIELD as

     permitted under this Agreement, or (ii) is a third party

     contractor assisting HPC with respect to research and

     development of a PRODUCT in the FIELD, provided that such

     third party agrees to confidentiality and non-use

     obligations essentially identical to Paragraph 5.1, and

     further provided that such third party agrees to be bound

     by the obligations of Paragraph 2.6.  It is expressly

     understood that inventions and developments of any such

     third party shall be HPC TECHNOLOGY to the extent that they

     fall within the definition thereof.

5.4  All CONFIDENTIAL INFORMATION disclosed by one PARTY to

     another PARTY shall remain the intellectual property of the

     disclosing PARTY.  In the event that a court or other legal

     or administrative tribunal, directly or through an

     appointed master, trustee or receiver, assumes partial or

     complete control over the assets of a PARTY to this

     Agreement based on the insolvency or bankruptcy of such

     PARTY, the bankrupt or insolvent PARTY shall promptly

     notify the court or other tribunal (i) that CONFIDENTIAL

     INFORMATION received from another PARTY under this

     Agreement remains the property of  the other PARTY and (ii)

     of the confidentiality obligations under this Agreement.

     In addition, the bankrupt or insolvent PARTY shall, to the

     extent permitted by law, take all steps necessary or

     desirable to maintain the confidentiality of the other

     PARTY's CONFIDENTIAL INFORMATION and to insure that the

     court, other tribunal or appointee maintains such

     information in confidence in accordance with the terms of

     this Agreement.

5.5  Neither HPC, MEDIMMUNE nor HGS shall, without the prior

     written consent of the others, issue any press release or

     make any other public announcement or furnish any statement

     to any person (other than either PARTIES' respective

     AFFILIATES) concerning the existence of this Agreement and

     the transactions contemplated by this Agreement, except for

     (i) disclosures made in compliance with Sections 5.1, 5.2

     and 5.3, hereof, (ii) attorneys, consultants, and

     accountants retained to represent them in connection with

     the transactions contemplated hereby and (iii) occasional,

     brief comments by the respective officers of HPC, MEDIMMUNE

     and HGS consistent with such guidelines for public

     statements as may be mutually agreed by HPC, MEDIMMUNE and

     HGS made in connection with routine interviews with

     analysts or members of the financial press.  In addition,

     each PARTY (after consultation with counsel) in its own

     right may make such further announcements and disclosures,

     if any, as may be required by applicable law, rule or

     regulation in which case the PARTY making the announcement

     or disclosure shall use its best efforts to give advance

     notice to, and discuss such announcement or disclosure

     with, the other PARTIES.

            SECTION 6 - ROYALTY PAYMENTS AND RECORDS

6.1  HPC shall keep, and shall cause each of its AFFILIATES and

     licensees to keep, full and accurate books of account

     containing all particulars that may be necessary for the

     purpose of calculating all royalties payable to MEDIMMUNE.

     Such books of account shall be kept at their principal

     place of business and, with all necessary supporting data

     shall, for the three (3) years next following the end of

     the calendar year to which each shall pertain be open for

     inspection by an independent certified accountant

     reasonably acceptable to HPC upon reasonable notice during

     normal business hours at MEDIMMUNE' expense for the sole

     purpose of verifying royalty statements or compliance with

     this Agreement, but in no event more than once in each

     calendar year.  All information and data offered shall be

     used only for the purpose of verifying royalties and shall

     be treated as HPC CONFIDENTIAL INFORMATION subject to the

     obligations of this Agreement.  In the event that such

     inspection shall indicate that in any calendar year that

     the royalties which should have been paid by HPC are at

     least (CONFIDENTIAL TREATMENT HAS BEEN REQUESTED) percent

     ((CONFIDENTIAL TREATMENT HAS BEEN REQUESTED)%) greater than

     those which were actually paid to MEDIMMUNE, then HPC shall

     pay the cost of such inspection and shall immediately pay

     any royalty deficiency.

6.2  In each year the amount of royalty due shall be calculated

     quarterly as of March 31, June 30, September 30 and

     December 31 (each as being the last day of an "ACCOUNTING

     PERIOD") and shall be paid quarterly within the following

     sixty days, every such payment shall be supported by the

     accounting prescribed herein and shall be made in United

     States dollars.  For the purpose of calculating royalties

     conversion from any foreign currency, such conversion shall

     be at the Exchange Rate published in the Wall Street

     Journal under "Currency Trading," for the last business day

     of the applicable ACCOUNTING PERIOD.

6.3  With each quarterly payment, HPC shall deliver to MEDIMMUNE

     a full and accurate accounting to include at least the

     following information on a country-by-country basis:

     (a)Quantity of each PRODUCT subject to royalty sold (by

         country) by HPC, its AFFILIATES and licensees.

     (b)Total invoice and receipts for each PRODUCT subject to

         royalty (by country);

     (c)Calculation of NET SALES PRICE;

     (d)Any other information reasonably requested by MEDIMMUNE

         to permit MEDIMMUNE to determine royalties owed;

     (e)Total royalties payable to MEDIMMUNE.

6.4  Any tax required to be withheld by HPC under the laws of

     any foreign country for the account of MEDIMMUNE shall be

     promptly paid by HPC for and on behalf of MEDIMMUNE to the

     appropriate governmental authority, and HPC shall furnish

     MEDIMMUNE with proof of payment of such tax.  Any such tax

     actually paid on MEDIMMUNE's behalf shall be deducted from

     royalty payments due MEDIMMUNE.



          SECTION 7 - REPRESENTATIONS AND WARRANTIES.

7.1  MEDIMMUNE represents and warrants that:

     (a)the execution and delivery of this Agreement and the

         performance of the transactions contemplated hereby

         have been duly authorized by all appropriate MEDIMMUNE

         corporate action;

     (b)the performance by MEDIMMUNE of any of the terms and

         conditions of this Agreement on its part to be

         performed does not and will not constitute a breach or

         violation of any other agreement or understanding,

         written or oral, to which it is a PARTY;

     (c)it has the full right and legal capacity to provide the

         rights to the MEDIMMUNE PATENTS and MEDIMMUNE

         TECHNOLOGY granted to HPC hereunder, and the rights to

         provide rights to information and access granted under

         Section 2;

     (d)there are no outstanding agreements, assignments and

         encumbrances to which MEDIMMUNE is a PARTY inconsistent

         with the provisions of this Agreement;

     (e)there are no adverse proceedings, claims or actions

         pending, or to the best knowledge of MEDIMMUNE,

         threatened, relating to the MEDIMMUNE PATENTS or

         MEDIMMUNE TECHNOLOGY, and at the time of disclosure and

         delivery thereof to HPC, to the best knowledge of

         MEDIMMUNE it shall have the full right and legal

         capacity to disclose and deliver the MEDIMMUNE PATENTS

         or MEDIMMUNE TECHNOLOGY without violating the rights of

         third parties.

     (f)as of the EFFECTIVE DATE it has maintained the

         MEDIMMUNE TECHNOLOGY as CONFIDENTIAL INFORMATION

         consistent with the provisions of Section 5 hereof, it

         will continue to maintain the MEDIMMUNE TECHNOLOGY as

         CONFIDENTIAL INFORMATION until publication as provided

         for herein, as of the EFFECTIVE DATE it has not

         submitted any of the MEDIMMUNE TECHNOLOGY for

         publication, and it will not publish any of the

         MEDIMMUNE TECHNOLOGY prior to five months from the

         EFFECTIVE DATE.

7.2  HPC represents and warrants that:

     (a)the execution and delivery of this Agreement and the

         performance of the transactions contemplated hereby

         have been duly authorized by all appropriate HPC

         corporate action;

     (b)the performance by HPC of any of the terms and

         conditions of this Agreement on its part to be

         performed does not and will not constitute a breach or

         violation of any other agreement or understanding,

         written or oral, to which it is a party;

     (c)it has the full right and legal capacity to provide the

         rights to the HPC PATENTS and HPC TECHNOLOGY granted to

         MEDIMMUNE hereunder;

     (d)there are no outstanding agreements, assignments and

         encumbrances to which HPC is a PARTY inconsistent with

         the provisions of this Agreement; and

     (e)there are no adverse proceedings, claims or actions

         pending, or to the best knowledge of HPC, threatened,

         relating to the HPC PATENTS or HPC TECHNOLOGY, and at

         the time of disclosure and delivery thereof to

         MEDIMMUNE, to the best knowledge of HPC it shall have

         the full right and legal capacity to disclose and

         deliver the HPC PATENTS or HPC TECHNOLOGY without

         violating the rights of third parties.

7.3  HGS represents and warrants that:

     (a)the execution and delivery of this Agreement and the

         performance of the transactions contemplated hereby

         have been duly authorized by all appropriate HGS

         corporate action;

     (b)the performance by HGS of any of the terms and

         conditions of this Agreement on its party to be

         performed does not and will not constitute a breach or

         violation of any other agreement or understanding,

         written or oral, to which it is a PARTY:

     (c)HGS has provided MEDIMMUNE with the full right and

         legal capacity under HGS intellectual property rights

         necessary for MEDIMMUNE to provide the rights to the

         MEDIMMUNE PATENTS and MEDIMMUNE TECHNOLOGY granted to

         HPC hereunder;

     (d)there are no outstanding agreements, assignments and

         encumbrances to which HGS is a party inconsistent with

         the provisions of this Agreement;

     (e)there are no adverse proceedings, claims or actions

         pending, or to the best knowledge of HGS, threatened,

         relating to HGS' intellectual property interests in the

         MEDIMMUNE PATENTS or MEDIMMUNE TECHNOLOGY, and at the

         time of disclosure and delivery thereof to HPC, to the

         best knowledge of HGS it shall have the full right and

         legal capacity to disclose and deliver the HGS

         intellectual property interests in the MEDIMMUNE

         PATENTS or MEDIMMUNE TECHNOLOGY without violating the

         rights of third parties.

     (f)as of the EFFECTIVE DATE it has maintained the HGS

         TECHNOLOGY as CONFIDENTIAL INFORMATION consistent with

         the provisions of Section 5 hereof, it will continue to

         maintain the HGS TECHNOLOGY as CONFIDENTIAL INFORMATION

         until publication as provided for herein, as of the

         EFFECTIVE DATE it has not submitted any of the HGS

         TECHNOLOGY for publication, and it will not publish any

         of the HGS TECHNOLOGY prior to five months from the

         EFFECTIVE DATE.

7.4  EXCEPT AS OTHERWISE EXPRESSLY PROVIDED FOR IN THIS

     AGREEMENT, NO PARTY TO THIS AGREEMENT MAKES ANY

     REPRESENTATIONS OR EXTENDS ANY WARRANTIES OF ANY KIND,

     EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,

     WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR

     PURPOSE, NON-INFRINGEMENT OR VALIDITY OF ANY INTELLECTUAL

     PROPERTY RIGHTS.

                  SECTION 8 - INDEMNIFICATION.

8.1  HPC shall defend, indemnify and hold harmless MEDIMMUNE,

     HGS, licensors of MEDIMMUNE and HGS and each of their

     respective directors, officers, shareholders, agents and

     employees (each an "Indemnitee"), from and against any and

     all liability, loss, damages and expenses (including

     reasonable attorneys' fees) as the result of claims,

     demands, costs or judgments which may be made or instituted

     against any of them arising out of the manufacture,

     possession, distribution, use, testing, sale or other

     disposition of any PRODUCT by or through or on behalf of

     HPC or any third party granted rights by HPC under this

     Agreement or any third party that obtains PRODUCT from HPC.

     HPC's obligation to defend, indemnify and hold harmless

     shall include claims, demands, costs or judgments, whether

     for money damages or equitable relief by reason of alleged

     personal injury (including death) to any person or alleged

     property damage, provided, however, the indemnity shall not

     extend to any claims against an indemnified party which

     result from the gross negligence or willful misconduct of

     such indemnified party.  The provisions of this paragraph

     shall survive and remain in full force and effect after any

     termination, expiration or cancellation of this Agreement

     and the obligation hereunder shall apply whether or not

     such claims are rightfully brought.

8.2  To the extent that HPC grants a license to MEDIMMUNE and/or

     HGS pursuant to Section 9.1(b) hereof, then MEDIMMUNE

     and/or HGS, as the case may be, (the "Indemnitor(s)") shall

     defend, indemnify and hold harmless HPC, licensors of HPC

     and each of their respective directors, officers,

     shareholders, agents and employees (each an "Indemnitee"),

     from and against any and all liability, loss, damages and

     expenses (including reasonable attorneys' fees) as the

     result of claims, demands, costs or judgments which may be

     made or instituted against any of them arising out of the

     manufacture, possession, distribution, use, testing, sale

     or other disposition of any PRODUCT outside the FIELD by or

     through or on behalf of the Indemnitor(s) or any third

     party granted rights by the Indemnitor(s) or any third

     party that obtains such PRODUCT from the Indemnitor(s).

     The Indemnitor(s)' obligation to defend, indemnify and hold

     harmless shall include claims, demands, costs or judgments,

     whether for money damages or equitable relief by reason of

     alleged personal injury (including death) to any person or

     alleged property damage, provided, however, the indemnity

     shall not extend to any claims against an indemnified party

     which result from the gross negligence or willful

     misconduct of such indemnified party.  The provisions of

     this paragraph shall survive and remain in full force and

     effect after any termination, expiration or cancellation of

     this Agreement and the obligation hereunder shall apply

     whether or not such claims are rightfully brought.

8.3  An Indemnitee shall promptly notify the Indemnitor(s) of

     any loss, claim, damage, liability, or action in respect of

     which the Indemnitee intends to claim such indemnification,

     and the Indemnitor, shall assume the defense thereof;

     provided, however, that an Indemnitee shall have the right

     to retain its own counsel, with the fees and expenses to be

     paid by the Indemnitor if Indemnitor does not assume the

     defense; or, if representation of such Indemnitee by the

     counsel retained by the Indemnitor would be inappropriate

     due to actual or potential differing interests between such

     Indemnitee and any other party represented by such counsel

     in such proceedings.  The indemnity agreement in this

     Section 8 shall not apply to amounts paid in settlement of

     any loss, claim, damage, liability or action  if such

     settlement is effected without the consent of the

     Indemnitor, which consent shall not be withheld

     unreasonably.  The failure to deliver notice to the

     Indemnitor within a reasonable time after the commencement

     of any such action, if prejudicial to its ability to defend

     such action, shall relieve such Indemnitor of any liability

     to the Indemnitee under this Section 8, but the omission so

     to deliver notice to the Indemnitor will not relieve it of

     any liability that it may have to any Indemnitee otherwise

     than under this Section 8.  The Indemnitee under this

     Section 8, its employees and agents, shall cooperate fully

     with the Indemnitor and its legal representatives in the

     investigations of any action, claim or liability covered by

     this indemnification.



                      SECTION 9 - PATENTS

9.1  (a)  Each party shall have and retain sole and exclusive

     title to all inventions, discoveries, designs, works of

     authorship and other know-how which are made, conceived,

     reduced to practice or generated by its employees, agents,

     or other persons acting under its authority.  As to all

     inventions, discoveries, designs, works of authorship and

     other know-how made, conceived, reduced to practice or

     generated jointly by employees, agents, or other persons

     acting under the authority of MEDIMMUNE and/or HGS and HPC,

     the parties shall own an equal undivided interest therein.

     HPC shall be responsible for the filing, prosecution and

     maintenance of HPC PATENTS and LICENSED PATENTS including

     JOINT PATENTS which do not have significant commercial

     utility outside the FIELD, but excluding (i) JOINT PATENTS

     which do have significant commercial utility outside the

     FIELD and (ii) those which are owned solely  by HGS, and

     shall be responsible for the cost and expense thereof.  HGS

     shall be responsible for the filing, prosecution and

     maintenance of JOINT PATENTS which have significant

     commercial utility outside the FIELD and LICENSED PATENTS

     solely owned by HGS.  HPC shall consult with MEDIMMUNE with

     respect to strategies for filing, prosecution and

     maintenance of patents and patent applications for which

     HPC bears responsibility under this Section 9.1, and shall

     keep MEDIMMUNE informed with regard to filing, prosecution

     and maintenance activity for such patents and patent

     applications, and with respect to such patents or patent

     applications which are solely owned by MEDIMMUNE or which

     are owned in part by MEDIMMUNE, HPC shall provide MEDIMMUNE

     with proposed patent applications and responses to office

     actions and official letters prior to filing thereof and in

     sufficient time to permit MEDIMMUNE to provide comments

     thereto.  Similarly, HGS and HPC shall consult with and

     keep each other informed as aforesaid with respect to JOINT

     PATENTS for which it bears responsibility.  HPC shall not

     allow any MEDIMMUNE PATENT to lapse or become abandoned

     without the written approval of MEDIMMUNE, which approval

     shall not be unreasonably withheld.  With respect to any

     MEDIMMUNE PATENT which is jointly owned by HPC and as to

     which HPC elects not to effect filing thereof or to

     continue prosecution or maintenance thereof, HPC shall

     assign HPC's interest therein to MEDIMMUNE as the case may

     be. If HPC does not desire to file, prosecute or maintain a

     patent or patent application to an invention, HPC shall

     assign its ownership interest therein to MEDIMMUNE and

     shall no longer be responsible for the cost and expense

     thereof, and shall have no right to consult, review or

     comment with respect to the filing, prosecution and

     maintenance of said patent or patent application.

     (b)  In the case of JOINT INVENTIONS and JOINT PATENTS

     which have significant commercial utility outside the

     FIELD, and in the event that HGS or MEDIMMUNE intends to

     use, license or sublicense rights to such JOINT INVENTIONS

     or JOINT PATENTS outside the FIELD, then HPC hereby grants

     to HGS or MEDIMMUNE, as the case may be, a sole and

     exclusive, worldwide, sublicensable license of HPC'S

     interest therein outside the FIELD, and HGS or MEDIMMUNE,

     as the case may be, does hereby agree to pay HPC:

             (i) A royalty of (CONFIDENTIAL TREATMENT HAS BEEN

         REQUESTED)percent ((CONFIDENTIAL TREATMENT HAS BEEN

         REQUESTED)%) of the NET SALES of PRODUCTS sold by HGS

         or MEDIMMUNE or their AFFILIATES which are covered in

         the country where manufactured, used or sold by a VALID

         CLAIM of any JOINT PATENT which is licensed by HPC to

         HGS or MEDIMMUNE hereunder; and

             (ii)A royalty of (CONFIDENTIAL TREATMENT

         HAS BEEN REQUESTED) percent ((CONFIDENTIAL

         TREATMENT HAS BEEN REQUESTED)%) of any

         royalties received by HGS or MEDIMMUNE for

         PRODUCTS sold by a licensee or sublicensee

         which in the country where manufactured, used

         or sold are covered by a VALID CLAIM of any

         JOINT PATENT which is licensed by HPC to HGS

         or MEDIMMUNE hereunder.

     9.2In the event of the institution of any suit by a third

         party against MEDIMMUNE or HGS or its respective

         licensees for patent infringement involving the

         manufacture, use, import, export, offer for sale, sale,

         distribution or marketing of a PRODUCT outside the

         FIELD, MEDIMMUNE or HGS, as the case may be, shall

         promptly notify HPC in writing.  As between MEDIMMUNE

         and/or HGS and HPC, MEDIMMUNE and/or HGS (but not HPC)

         shall be solely or jointly responsible, as the case may

         be, for the cost and expense of such action and any

         liability which results therefrom.

     9.3In the event that MEDIMMUNE or HPC becomes aware of

         actual or threatened infringement of a LICENSED PATENT

         anywhere in the LICENSED TERRITORY by the sale of

         PRODUCT in the FIELD, that party shall promptly notify

         the other party in writing.  HPC shall have the first

         right but not the obligation to bring, at its own

         expense, an infringement action against any THIRD PARTY

         with respect to a LICENSED PATENT as to which HPC

         retains a license hereunder.  If HPC does not commence

         a particular infringement action within ninety (90)

         days of such notice, MEDIMMUNE or HGS, as the case may

         be, shall be entitled to bring such infringement

         action, at its own expense.  The PARTY conducting an

         action under this Paragraph 9.3 shall have full control

         over its conduct, including settlement thereof provided

         such settlement shall not be made without MEDIMMUNE'S

         or HGS' prior written consent if the action is brought

         by HPC, which consent shall not be unreasonably

         withheld, provided, however, that in any action brought

         by HGS or MEDIMMUNE, such PARTY shall in good faith

         consult with HPC regarding such litigation and consider

         HPC's reasonable commercial interest in any settlement

         of such litigation.  The parties shall reasonably

         assist one another and cooperate in any such litigation

         at the other's request, each such party paying its own

         costs and expenses.  The party conducting the

         litigation  shall periodically reimburse the other

         party for its reasonable and actual out-of-pocket

         expenses for assisting in the litigation, which

         reimbursement shall be made within thirty (30) days of

         receipt by the party conducting the litigation of

         itemized invoices from the assisting party documenting

         such expenses.

9.4  Any recovery made by a party as the result of an action for

     patent infringement it has conducted under Paragraph 9.3

     shall be distributed as follows:

         (i)The party conducting the action shall recover its

         actual out -of-pocket expenses.

         (ii)    To the extent that the recovery exceeds the

         total of item (i), the excess shall be kept by the

         party conducting the action, provided, however, that to

         the extent that (a) a recovery is made by HPC and is

         based on an award of lost sales/profits, and (b) HPC

         would have incurred a royalty obligation to MEDIMMUNE

         based upon such sales, MEDIMMUNE shall receive a

         proportion of the excess recovery corresponding to the

         royalty percentage it would have otherwise been due.

9.5  The parties shall periodically keep one another reasonably

     informed of the status of and of, their respective

     activities regarding, any such litigation or settlement

     thereof.

                   SECTION 10 - DUE DILIGENCE

10.1 HPC shall select and use commercially reasonable efforts

     and diligence to research, develop and then sell at least

     one PRODUCT.  The efforts of a sublicensee and/or an

     AFFILIATE of HPC shall be considered as efforts of HPC.

     (b)In the event that MEDIMMUNE reasonably believes that HPC

     is not making reasonable efforts under the circumstances to

     research, develop and then sell a selected PRODUCT in the

     FIELD then MEDIMMUNE shall provide written notice to HPC.

     Upon receipt of such written notice, HPC shall submit a

     reasonable development and/or marketing plan for PRODUCT in

     the FIELD.

     (c)  In the event that HPC does not plan to research and

     develop in good faith at least one PRODUCT in the FIELD,

     HPC agrees to notify MEDIMMUNE in writing thereof.

     (d)If HPC fails to submit a plan as required by Section

     10.1(b) and/or exert the efforts set forth in the plan

     MEDIMMUNE, in addition to any other remedy it may have,

     shall have the option to terminate the Agreement and

     licenses granted hereunder, pursuant to Section 12.2, which

     termination shall take effect sixty (60) days after written

     notice to HPC unless HPC submits a plan or exerts the

     required efforts, as the case may be, prior to expiration

     of such sixty (60) day period.

     (e)  Within sixty (60) days after the end of each calendar

     year, HPC shall provide MEDIMMUNE with a written report

     with respect to its efforts to research, develop &

     commercialize PRODUCT in the FIELD for in such calendar

     year.

              SECTION 11 - ASSIGNMENT; SUCCESSORS.

11.1 This Agreement shall not, be assignable by either of the

     parties without the prior written consent of the other

     party (which consent shall not be unreasonably withheld),

     except that either party may assign this Agreement to an

     AFFILIATE or to a successor in interest or transferee of

     all or substantially all of the portion of the business to

     which this Agreement relates.

11.2 Subject to the limitations on assignment herein, this

     Agreement shall be binding upon and inure to the benefit of

     said successors in interest and assigns of MEDIMMUNE and

     HPC Any such successor or assignee of a party's interest

     shall expressly assume in writing the performance of all

     the terms and conditions of this Agreement to be performed

     by said party and such Assignment shall not relieve the

     Assignor of any of its obligations under this Agreement.

               SECTION 12 - TERM AND TERMINATION.

12.1 This Agreement, unless earlier termination as provided

     herein shall remain in full force and effect until HPC's

     obligations to pay royalties hereunder terminate pursuant

     to Section 3.4, at which time HPC shall have a fully paid

     up, non-cancelable license with respect to all PRODUCTS

     manufactured, used, sold, imported or exported by HPC.

     This Agreement may be extended or terminated, at any time,

     by mutual agreement by the PARTIES in writing.

12.2 In the event that HPC fails to meet its obligations under

     Sections 3 or 6, and such failure is not cured within sixty

     (60) days after written notice to HPC. MEDIMMUNE, in

     addition to any other remedy it may have, at its sole

     option may terminate this Agreement.

12.3 Termination of this Agreement under Paragraph 12.2 shall be

     without prejudice to any other rights or remedies which

     MEDIMMUNE may have hereunder, whether or not such rights or

     remedies arise from such breach which results in

     termination.

12.4 A PARTY may terminate this Agreement upon notice to the

     other PARTIES in the event of the filing by any other PARTY

     of a petition in bankruptcy or for liquidation; the request

     for or appointment of a receiver; execution upon any

     portion of the relevant PARTY'S business or assets; the

     relevant PARTY'S arrangement with or assignment for the

     benefit of creditors; or the relevant PARTY'S becoming

     unable to meet its obligations as they become due.

12.5 HPC's obligation to pay royalties hereunder shall survive

     termination of this Agreement.  In addition, the

     obligations of Sections 5, 6 and 8 and of Paragraphs 2.3,

     2.4, 12.3, 12.5 and 13.3 of this Agreement shall survive

     any termination of this Agreement.

12.6 Upon termination of this Agreement for any reason, nothing

     herein shall be construed to release either party from any

     obligation that matured prior to the date of such

     termination.

                SECTION 13 - GENERAL PROVISIONS.

13.1 The relationship between MEDIMMUNE, HGS and HPC is that of

     independent contractors.  MEDIMMUNE, HGS and HPC are not

     joint venturers, partners, principal and agent. master and

     servant, employer or employee, and have no relationship

     other than as independent contracting parties.  MEDIMMUNE

     shall have no power to bind or obligate HPC in any manner.

     Likewise, HPC shall have no power to bind or obligate

     MEDIMMUNE in any manner.

13.2 This Agreement sets forth the entire agreement and

     understanding between the parties as to the subject matter

     thereof and supersedes all prior agreements in this

     respect.  There shall be no amendments or modifications to

     this Agreement, except by a written document which is

     signed by both parties.

13.3 This Agreement shall be construed and enforced in

     accordance with the laws of the State of Maryland without

     reference to its choice of law principles.

13.4 The headings in this Agreement have been inserted for the

     convenience of reference only and are not intended to limit

     or expand on the meaning of the language contained in the

     particular article or section.

13.5 Any delay in enforcing a party's rights under this

     Agreement or any waiver as to a particular default or other

     matter shall not constitute a waiver of a party's right to

     the future enforcement of its rights under this Agreement,

     excepting only as to an expressed written and signed waiver

     as to a particular matter for a particular period of time.

13.6 Notices.  Any notices given pursuant to this Agreement

     shall be in writing and shall be deemed to have been given

     and delivered upon the earlier of (i) when received at the

     address set forth below. or (ii) three (3) business days

     after mailed by certified or registered mail postage

     prepaid and property addressed, with return receipt

     requested, or (iii) on the day when sent by facsimile as

     confirmed by certified or registered mail.  Notices shall

     be delivered to the respective parties as indicated:

         To MEDIMMUNE:      MedImmune, Inc.
                             35 West Watkins  Mill Road
                             Gaithersburg, MD 20878
                             ATTN: CEO

         Copy to:           Carella, Byrne, Bain, Gilfillan,
                            Cecchi, Stewart & Olstein
                             6 Becker Farm Road
                             Roseland, NJ 07068
                             Fax No. (201) 597-0250
                             ATTN: Elliot M. Olstein, Esq.

         To HGS:            Human Genome Sciences, Inc.
                             9410 Key West Avenue
                             Rockville, MD 20850
                             ATTN: CEO

     To OraVax Merieux Co.: OraVax Merieux Co.
                             38 Sidney Street
                             Cambridge, MA 02139
                             ATTN:  Lance Gordon

     To Merieux OraVax S.N.C.:  Merieux OraVax S.N.C.
                             58 Avenue Leclerc
                             69007 Lyon, France
                             ATTN:  HervJ Tainturier

         Copy to:            Palmer & Dodge
                             One Beacon Street
                             Boston, MA 02108
                             Fax No. (617) 227-4420
                             ATTN:  Michael Lytton


     IN WITNESS WHEREOF, the parties have executed this
Agreement as of the date set forth above.

For MEDIMMUNE, INC.                 For MERIEUX ORAVAX S.N.C.



By:  David M. Mott                 By:  Paul Kirkconnell

  David M. Mott                    Paul Kirkconnell
  (Printed Name)                  (Printed Name)
   President and
   Operating Officer
(Title)


For ORAVAX MERIEUX CO.             For HUMAN GENOME SCIENCES,
INC.


By: Thomas Monath

  Thomas Monath
  (Printed Name)                       (Printed Name)

                                                            
  (Title)                              (Title)


OraVax, Inc. and Pasteur Merieux SJrums & Vaccins S.A each hereby
guarantee that their respective AFFILIATES, including but not
limited to OraVax Merieux Co. and Merieux OraVax S.N.C. will
perform all obligations under this Agreement.

For ORAVAX, INC.                   For PASTEUR MERIEUX
                                   SERUMS & VACCINS S.A.

By: Lance Gordon                    By: A. Lindberg
  
    Lance Gordon                      A. Lindberg
    (Printed Name)                   (Printed Name)

                                                             
    (Title)                           (Title)



                            EXHIBIT A

Specification for LICENSED TECHNOLOGY and Software Deliverables


(CONFIDENTIAL TREATMENT HAS BEEN REQUESTED)




                                                     Exhibit 23.1
                                                                 
                                                                 
               CONSENT OF INDEPENDENT ACCOUNTANTS
                                
                                
                                
We  consent to the incorporation by reference in the registration
statements of MedImmune, Inc. on Form S-3 (Registration No.  333-
13373)  and Forms S-8 (Registration Nos. 99540, 33-46165 and  33-
50678) of our report dated February 6, 1997 on our audits of  the
financial   statements  and  financial  statement   schedule   of
MedImmune, Inc., as of December 31, 1996 and 1995, and  for  each
of the years ended December 31, 1996, 1995 and 1994, which report
is included in this Annual Report on Form 10-K.




                              Coopers & Lybrand L. L. P.


Rockville, Maryland
March 27, 1997


<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM MEDIMMUNE,
INC.'S ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 1996 AND IS
QUALIFIED IN ITS ENTIRETY TO REFERENCE TO SUCH FILING.
</LEGEND>
       
<S>                             <C>
<MULTIPLIER>1,000
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<CASH>                                          12,629
<SECURITIES>                                   102,136
<RECEIVABLES>                                   10,287
<ALLOWANCES>                                         0
<INVENTORY>                                      6,060
<CURRENT-ASSETS>                                 1,713
<PP&E>                                          29,087
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                                 163,971
<CURRENT-LIABILITIES>                           19,536
<BONDS>                                         70,874
                                0
                                          0
<COMMON>                                           218
<OTHER-SE>                                      72,647
<TOTAL-LIABILITY-AND-EQUITY>                   163,971
<SALES>                                         35,782
<TOTAL-REVENUES>                                41,099
<CGS>                                           19,678
<TOTAL-COSTS>                                   74,035
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               2,263
<INCOME-PRETAX>                               (29,544)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                           (29,544)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (29,544)
<EPS-PRIMARY>                                   (1.41)
<EPS-DILUTED>                                   (1.41)
        

</TABLE>


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