PERCLOSE INC
10-Q, 1998-08-07
SURGICAL & MEDICAL INSTRUMENTS & APPARATUS
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<PAGE>

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

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                   -----------

                                    FORM 10-Q

     [ X ] Quarterly  report  pursuant to Section 13 or 15(d) of the  Securities
           Exchange Act of 1934.

                  FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1998

                                       or

     [ ]  Transition  report  pursuant to Section 13 or 15(d) of the  Securities
          Exchange Act of 1934. For the transition period from ____ to ____. 



                             Commission File Number

                                     0-26890

                                   -----------

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

             DELAWARE                                            94-3154669
        (State or other jurisdiction of                      (I.R.S. Employer
        incorporation or organization)                      Identification No.)
 
      199 JEFFERSON DRIVE, MENLO PARK, CA                         94025-1114
     (Address of principal executive offices)                     (Zip Code)

           Registrant's telephone, including area code: (650) 473-3100

                                   -----------

         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
requirements for the past 90 days. Yes [X] No [ ]

         As of July 24, 1998,  there were 10,807,430  shares of the Registrant's
Common Stock outstanding.




<PAGE>




                                 PERCLOSE, INC.

                                TABLE OF CONTENTS

  

 PART I.  FINANCIAL INFORMATION                                            Page
                                                                           -----
    
    Item 1.   Financial Statements
           
              Consolidated Balance Sheets as of June 30, 1998 and 
              March 31, 1998 ...............................................   3
      
              Consolidated Statements of Operations for the 
              three months ended June 30, 1998 and 1997 ....................   4
      
              Consolidated Statements of Cash Flows for the
              three months ended June 30, 1998 and 1997 ....................   5
      
              Notes to Consolidated Financial Statements ...................   6

    Item 2.   Management's Discussion and Analysis of Financial Condition
              and Results of Operations ....................................  10

PART II.  OTHER INFORMATION ................................................  18

INDEX TO EXHIBITS ..........................................................  18

SIGNATURES .................................................................  19



<PAGE>






                                        PERCLOSE, INC.

                                  CONSOLIDATED BALANCE SHEETS
                              (In thousands except per share data)


<TABLE>
<CAPTION>

                                                       June 30, 1998       March 31, 1998
                                                       --------------      --------------
                                                         (Unaudited)
                                     ASSETS
<S>                                                    <C>                  <C>

Current assets:
  Cash and cash equivalents .....................       $      11,092       $     13,232
  Short-term investments.........................              19,247             18,349
  Accounts receivable, net ......................               4,149              3,455
  Inventories....................................               2,126              1,619
  Prepaid expenses ..............................                 524                628
                                                       --------------      --------------
     Total current assets........................              37,138             37,283

Equipment and leasehold improvements, net .......               2,514              2,277
Officer notes receivable ........................                 400                600
Other assets ....................................                 880                291
                                                       --------------      --------------
Total assets.....................................       $      40,932       $     40,451
                                                       ==============      ==============

                      LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
  Accounts payable................................      $         906       $        782
  Accrued compensation ...........................              1,190              1,202
  Accrued warranty ...............................                191                191
  Other accrued expenses .........................                940                955
  Short-term portion of notes payable ............                182                379
                                                       --------------      --------------
     Total current liabilities ...................              3,409              3,509


Commitments and contingencies ....................

Stockholders' equity:
  Preferred Stock, $0.001 par value...............                 --                 --
  Common stock, $0.001 par value..................                 11                 11
  Additional paid-in capital .....................             79,630             79,433
  Deferred compensation...........................               (655)              (739)
  Accumulated deficit.............................            (41,463)           (41,763)
                                                       ---------------     --------------
Total stockholders' equity........................             37,523             36,942
                                                       ---------------     --------------

Total liabilities and stockholders' equity........      $      40,932       $     40,451
                                                       ===============     ==============

</TABLE>


                                    See accompanying notes.


<PAGE>



                                      PERCLOSE, INC.

                          CONSOLIDATED STATEMENTS OF OPERATIONS
                         (In thousands except per share amounts)
                                       (Unaudited)
  

<TABLE>
<CAPTION>

                                                   Three Months Ended June 30,
                                                      1998            1997
                                                  ------------   ------------

<S>                                               <C>            <C>
Net revenues....................................    $   8,364     $   1,170
Cost of goods sold..............................        3,190         1,453
                                                  ------------   ------------
Gross margin....................................        5,174          (283)

Operating expenses:
   Research and development.....................        1,629         1,234
   Selling, general and administrative..........        3,633         2,846
                                                  ------------   ------------
      Total Operating expenses..................        5,262         4,080
                                                  ------------   ------------

Loss from operations............................          (88)       (4,363)

Interest income.................................          439           416
Interest expense and other......................           53            60
                                                  ------------   ------------
      Interest income, net......................          386           356
                                                  ------------   ------------

Income (loss) before income taxes...............          298        (4,007)
Provision for income taxes......................           15            --
                                                  ------------   -------------

Net income (loss)...............................   $      283     $  (4,007)
                                                  ============   =============

Basic earnings (loss) per common share..........   $     0.03     $   (0.42)
                                                  ============   =============

Diluted earnings (loss) per common share........   $     0.02     $   (0.42)
                                                  ============   =============

Shares used in computing basic earnings
  (loss) per share .............................       10,752         9,572
                                                  ============   =============

Shares used in computing diluted earnings
  (loss) per share .............................       11,425         9,572
                                                  ============   =============

</TABLE>


                             See accompanying notes.


<PAGE>



                                               PERCLOSE, INC.

                                    CONSOLIDATED STATEMENTS OF CASH FLOWS
                                               (In thousands)
                                                 (Unaudited)

<TABLE>
<CAPTION>


                                                                   Three Months Ended June 30,
                                                                   ---------------------------
                                                                       1998          1997
                                                                   ------------   ------------
<S>                                                                <C>            <C>

Operating Activities
   Net income (loss).............................................   $      283     $   (4,007)

   Adjustments  to  reconcile  net income  (loss) to net cash
   used in  operating activities:
      Depreciation and amortization..............................          377            244
      Deferred compensation amortization.........................           84             79
      Changes in operating assets and liabilities:
         Accounts receivable.....................................         (687)          (841)
         Other receivables and prepaid expenses..................           97             19
         Inventories.............................................         (507)          (246)
         Accounts payable........................................          124            (83)
         Other accrued epenses...................................          (17)          (243)
                                                                   ------------   ------------
          Net cash provided by (used in) operating activities....         (246)        (5,078)

Investing Activities
   Purchases of short-term investments...........................       (4,464)        (1,823)
   Proceeds from sales and maturities of short-term investments..        3,583          7,479
   Purchases of equipment and leasehold improvements.............         (513)          (475)
   Other  assets.................................................         (690)            45
                                                                   ------------   ------------
          Net cash provided by (used in) investing activities....       (2,084)         5,226

Financing Activities
   Payments under notes payable..................................         (207)           (95)
   Proceeds from issuance of common stock, net of repurchases....          197             43
   Proceeds from and (issuance of ) officer notes receivable.....          200           (200)
                                                                   ------------   ------------
          Net cash provided by (used in) financing activities....          190           (252)
                                                                   ------------   ------------

    Net increase (decrease) in cash and cash equivalents.........       (2,140)          (104)

    Cash and cash equivalents at beginning of period.............       13,232          2,677
                                                                   ------------   ------------
    Cash and cash equivalents at end of period...................   $   11,092     $    2,573
                                                                   ===========    ============

    Supplemental disclosures of cash flow information:
    Cash paid for interest.......................................   $      164     $       11

</TABLE>

                                      See accompanying notes.






<PAGE>




                                 PERCLOSE, INC.

                   NOTES TO CONSOLDIATED FINANCIAL STATEMENTS
                                   (UNAUDITED)


NOTE 1.  BASIS OF PRESENTATION

         The accompanying  unaudited consolidated financial statements have been
prepared in accordance with generally accepted accounting principles for interim
financial  information and in accordance with the  instructions to Form 10-Q and
Article  10 of  Regulation  S-X.  Accordingly,  they do not  include  all of the
information and footnotes required by generally accepted  accounting  principles
for complete financial statements. In the opinion of management, all adjustments
(consisting  of  normal  recurring  accruals)  considered  necessary  for a fair
presentation have been included.

         The consolidated financial statements include the accounts of Perclose,
Inc. and its wholly owned  subsidiary,  Perclose  GmbH formed in June 1998.  All
intercompany balances and transactions have been eliminated in consolidation.
         
          The  operating  results  of the  interim  periods  presented  are  not
necessarily  indicative of the results for the year ending March 31, 1999 or for
any future interim period. The accompanying  financial statements should be read
in conjunction with the audited  financial  statements and notes thereto for the
year ended March 31, 1998 included in the  Company's  Annual Report on Form 10-K
as filed with the Securities and Exchange  Commission.  The accompanying balance
sheet at March 31, 1998 is derived from  audited  financial  statements  at that
date.

         The  Company's  fiscal  year  ends on the last  Friday  in  March.  The
Company's  fiscal quarters end on the Friday closest to the end of each calendar
quarter.  The three month  periods  shown as having ended June 30, 1998 and 1997
actually  ended on June 26, 1998 and June 27,  1997,  respectively.  For ease of
presentation, the accompanying financial statements have been shown as ending on
the last day of the calendar month.

NOTE 2.  INVENTORIES

         Inventories consist of the following (in thousands):

                        June 30,         March 31,
                          1998             1998
                      --------------   --------------

Raw materials........ $       554       $      409
Work-in-process......         544              552
Finished goods.......       1,028              658
                      ==============   ==============
                      $     2,126       $    1,619
                      ==============   ==============



<PAGE>


NOTE 3.  PER SHARE DATA

         In 1997, the Financial  Accounting Standards Board, (the "FASB") issued
Statement No. 128, Earnings per Share ("SFAS 128"), which supersedes  Accounting
Principles  Board Opinion No. 15 and which is effective  for all periods  ending
after December 31, 1997.  SFAS No. 128 replaced the  presentation of primary and
fully  diluted  earnings  per share with basic and diluted  earnings  per share.
Unlike  primary  earnings  per share,  basic  earnings  per share  excludes  any
dilutive  effects of options,  warrants,  and  convertible  securities.  Diluted
earnings  per share is very similar to the  previously  reported  fully  diluted
earnings  per share and  reflects  the  potential  dilution  that would occur if
securities or other  contracts to issue common stock were exercised or converted
to common stock.  All earnings per share (EPS) and share amounts for all periods
presented  have  been  restated  to  conform  to SFAS  128  requirements,  where
appropriate.

         The following is a reconciliation of the numerators and denominators of
the basic and diluted EPS  computations  for the quarter ended June 30, 1998 and
1997 (in thousands).

                                              1998                1997
                                         ----------------   -----------------   
Numerator:
   Net income (loss)numerator for basic   
      and diluted EPS ................    $         283       $      (4,007)   
                    
Denominator:                
   Denominator for basic EPS-
      Weighted-average shares ........           10,752               9,572

Effect of dilutive securities:  
      Stock options ..................              673                  --

Denominator for diluted EPS-
      Adjusted weighted-average shares 
      outstanding and assumed
      conversions ....................           11,425               9,572
                                         ================   =================

         Options to purchase  105,166 shares of common stock were outstanding in
the quarter  ended June 30, 1998 but were not  included  in the  computation  of
diluted EPS as their effect was anti-dilutive.

         For the quarter ended June 30, 1997 the effect of the assumed  exercise
of stock  was  antidilutive,  therefore  basic  and  diluted  loss per  share as
presented on the unconsolidated statements of operations are the same.


<PAGE>


NOTE 4.  CASH, CASH EQUIVALENTS AND AVAILABLE-FOR-SALE SECURITIES

         CASH AND CASH  EQUIVALENTS.  The  Company  invests  its excess  cash in
government and corporate  securities.  Highly liquid investments with maturities
of three months or less at the date of acquisition are considered by the Company
to be cash  equivalents.  Investments with maturities beyond three months at the
date of  acquisition  and that mature within one year from the balance sheet are
considered to be short-term investments. Investments with maturities longer than
one year from the balance sheet date are classified as short-term investments

         The  Company  maintains  its  cash,  cash  equivalents  and  short-term
investments  in a range of fixed income  securities  from  various  issuers with
different  maturities  and  credit  ratings.  This  diversification  of  risk is
consistent with the Company's  investment policy, which is to maintain liquidity
and ensure the safety of principal.

         AVAILABLE-FOR-SALE   SECURITIES.   All   short-term   investments   are
designated as available-for-sale.  Available-for-sale  securities are carried at
fair value with unrealized gains and losses, net of tax, reported in accumulated
deficit.  The amortized cost of  available-for-sale  debt securities is adjusted
for the  amortization  of premiums  and the  accretion of discounts to maturity.
Such amortization is included in interest income.

         Realized   gains  and  losses  and  declines  in  value  judged  to  be
other-than-temporary  on available-for-sale  securities are included in interest
income.  The cost of  securities  sold is based on the  specific  identification
method.  Interest and dividends on securities  classified as  available-for-sale
are included in interest income.

NOTE 5.  COMPREHENSIVE INCOME

         In June 1997, the Financial Accounting Standards Board issued Statement
No. 130, "Reporting Comprehensive Income" (FASB 130). FASB 130 establishes rules
for the  reporting  and  display of  comprehensive  income  and its  components.
Specifically,  FASB 130  requires  unrealized  holding  gains and  losses on the
Company's available-for-sale  securities which are currently reported separately
in  stockholders'  equity to be included in other  comprehensive  income and the
disclosure of total comprehensive  income.  Beginning April 1, 1998, the Company
adopted FASB 130,  however,  the adoption of the  Statement had no impact on the
Company's net income or shareholders' equity.

     The components of comprehensive  income,  net of related tax, for the three
months ended June 30, 1998 and 1997 are as follows (in thousands):

                                                1998             1997
                                          ---------------  ---------------
Net income (loss)                          $       283       $    (4,007)

Other comprehensive income:
Change in unrealized gain (loss)                
on available-for-sale investments                   16                59
                                          ---------------  ---------------

Comprehensive income                       $       299       $    (3,948)
                                          ===============  ===============

<PAGE>


NOTE 6.  COMMITMENTS

         In June 1998, the Company  entered into a new facility lease  agreement
for  approximately  80,000  square  feet of office,  laboratory,  cleanroom  and
manufacturing space which it expects to occupy beginning in early 1999. The base
rent is  approximately  $173,000  per  month  commencing  August  1,  1998.  See
"Management's  Discussion  and  Analysis of Financial  Condition  and Results of
Operations --Liquidity and Capital Resources".

NOTE 7.  NEW ACCOUNTING STANDARDS

         In June 1997, the Financial Accounting Standards Board issued Statement
No. 131,  "Disclosures About Segments of an Enterprise and Related  Information"
(FASB 131). FASB 131 will require the Company to use the  "management  approach"
in disclosing  financial  information on operating  segments.  This statement is
also  effective for the Company  beginning  fiscal year 1999.  While the Company
does not  anticipate  that  SFAS No.  131 will  have a  material  impact  on its
financial reporting and disclosures, changes, if any, will first be reflected in
the Company's 1999 Annual Report on Form 10-K.







<PAGE>


ITEM 2.     MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND 
            RESULTS OF OPERATIONS

         IN ADDITION TO THE OTHER  INFORMATION IN THIS REPORT ON FORM 10-Q (THIS
"REPORT")  AND  IN THE  DOCUMENTS  INCORPORATED  BY  REFERENCE  HEREIN,  CERTAIN
STATEMENTS IN  MANAGEMENT'S  DISCUSSION AND ANALYSIS OF FINANCIAL  CONDITION AND
RESULTS OF OPERATIONS ARE FORWARD LOOKING STATEMENTS.  WHEN USED IN THIS REPORT,
THE WORD  "EXPECTS,"  "ANTICIPATES,"  "ESTIMATES,"  AND SIMILAR  EXPRESSIONS ARE
INTENDED TO IDENTIFY FORWARD LOOKING STATEMENTS.  SUCH STATEMENTS ARE SUBJECT TO
RISKS AND  UNCERTAINTIES  THAT COULD CAUSE ACTUAL  RESULTS TO DIFFER  MATERIALLY
FROM THOSE PROJECTED. THESE RISKS AND UNCERTAINTIES INCLUDE, BUT ARE NOT LIMITED
TO,  THOSE RISKS SET FORTH  BELOW  UNDER  "FACTORS  AFFECTING  FUTURE  OPERATING
RESULTS," IN  PARTICULAR,  THOSE  RELATING TO THE  COMPANY'S  DEPENDENCE  ON THE
PROSTAR AND TECHSTAR  PRODUCTS,  UNCERTAINTY  OF MARKET  ACCEPTANCE,  HISTORY OF
LOSSES AND RISK OF INABILITY TO SUSTAIN PROFITABILITY, FLUCTUATIONS IN OPERATING
RESULTS,   GOVERNMENT   REGULATION,   COMPETITION  AND  RISK  OF   TECHNOLOGICAL
OBSOLESCENCE,  LIMITED MANUFACTURING  EXPERIENCE AND SCALE-UP RISK,  UNCERTAINTY
RELATING TO NEW PRODUCT  DEVELOPMENT,  LIMITED SALES AND  MARKETING  EXPERIENCE,
RELIANCE ON PATENTS AND  PROPRIETARY  TECHNOLOGY AND  UNCERTAINTY OF THIRD-PARTY
REIMBURSEMENT.

OVERVIEW

         Perclose  designs,  manufactures  and  markets  less  invasive  medical
devices that automate the surgical  closure or connection  of blood  vessels.  A
first  product  family,  the Prostar and Techstar  products,  which are marketed
worldwide, surgically close the arterial access site in the femoral artery after
catheterization  procedures  such  as  angioplasty,  stenting,  atherectomy  and
diagnostic  angiography.  A second group of products,  The Heartflo  System,  is
under  development and is designed to automate the surgical  connection of blood
vessels in conventional and minimally invasive coronary artery bypass surgery.

         The Company commenced  international shipments of its first Prostar and
Techstar products in December 1994 and July 1995,  respectively.  In fiscal year
1998,  the Company  received  several FDA  premarket  approvals  ("PMA") and PMA
supplement  approvals  for  commercial  sale in the  United  States  of  various
versions of its Prostar  and  Techstar  Percutaneous  Vascular  Surgery  ("PVS")
products.

RESULTS OF OPERATIONS

         REVENUES.  The Company's net revenues increased to $8.4 million for the
three  months  ended June 30, 1998 from $1.2  million for the three months ended
June 30, 1997.  The primary reason for the increase in revenues was higher sales
in the United States resulting from the introduction of the latest generation of
the Company's Prostar and Techstar  products.  Domestic sales as a percentage of
total revenue for the three months ended June 30, 1998 increased to 88% from 51%
for the corresponding 1997 quarter.  The mix of Techstar and Prostar revenue for
the current quarter was 62% and 38%, respectively

          COST OF GOODS SOLD.  Cost of goods sold  increased to $3.2 million for
the three  months  ended June 30, 1998 from $1.5  million  for the three  months
ended  June  30,  1997.  The  increase  in  cost of  goods  sold  was  primarily
attributable  to an increase in units sold for the three  months  ended June 30,
1998 as compared to the same period in 1997. This increase was partially  offset
by the lower direct costs associated with the new generation Prostar products as
compared to the first generation  Prostar products shipped to U.S.  customers in
the quarter ended June 30, 1997.  Additionally,  per unit indirect costs for the
three months ended June 30, 1998 were lower,  reflecting operating  efficiencies
as  well  as  a  larger  volume  of  units  sold  over  which  to  spread  fixed
manufacturing overhead costs. During the quarter ended June 30, 1997 the Company
was preparing for its U.S.  product launch which began in May 1997. As a result,
period  manufacturing costs were higher relative to sales volume for the quarter
ended June 30, 1997  compared to the same period in 1998.  The  Company's  gross
margin for the three  months  ended June 30,  1998 was 62%  compared  to a gross
margin of -24% for the three  months ended June 30, 1997.  This  improvement  in
gross margin is reflective of increased sales volumes, which enabled the Company
to spread fixed overhead costs over larger volumes.

         RESEARCH AND DEVELOPMENT.  Research and development  expenses increased
32% to $1.6  million for the three  months ended June 30, 1998 from $1.2 million
for the three months ended June 30, 1997. This increase was mainly the result of
payroll  related  costs  associated  with a 77%  increase  in head  count.  More
significant   personnel   increases  were  in  quality   assurance  and  product
development for the Heartflo Anastomosis System.

         SELLING,    GENERAL   AND   ADMINISTRATIVE.    Selling,   general   and
administrative expenses increased 28% to $3.6 million for the three months ended
June 30, 1998 from $2.8 million for the three  months  ended June 30, 1997.  The
increase was  primarily  due to the  expansion of the United  States sales force
which resulted in both higher payroll related costs as well as increased  travel
expenses.  Additionally,  selling, general and administrative expenses increased
as a result of the hiring of additional support personnel for the expanded sales
force  and to  handle  the  larger  volume of  transactions  resulting  from the
increased sales activity.

         NET INTEREST  INCOME.  Net interest income increased 8% to $386,000 for
the three  months  ended June 30, 1998 from  $356,000 for the three months ended
June 30,  1997  primarily  as a result of  higher  average  cash and  short-term
investments  balances in  connection  with the  investment  of proceeds from the
Company's public offering in November, 1997.

INCOME TAXES

         The income tax  provision  for the three  months ended June 30, 1998 of
$15,000 is  attributable  to current income taxes,  and consists  principally of
state and federal  minimum  taxes.  No income tax provision was recorded for the
three months ended June 30, 1997 as a result of losses in fiscal year 1997.

         As of March 31, 1998, the Company had net operating loss  carryforwards
for  federal  and  California  tax  purposes of  approximately  $38,000,000  and
$15,000,000,  respectively,  which will  expire  from 1998  through  2012 if not
utilized. The Company also had research and development tax credit carryforwards
of approximately $250,000 and $130,000, respectively, for federal and California
tax purposes expiring from 2007 through 2013 if not utilized. Utilization of the
net  operating  loss and tax  credit  carryforwards  may be subject to an annual
limitation  due to the  ownership  change  limitations  provided by the Internal
Revenue Code of 1986, as amended, and similar state provisions.


YEAR 2000 COMPLIANCE

         The Company is aware of the software  compatibility  issues  associated
with  existing  computer  systems  as the year 2000  approaches.  The "year 2000
problem" is pervasive and complex, as virtually every computer operation will be
affected in some way by the rollover of the two-digit  year value from 99 to 00.
The issue is whether  computer  systems will properly  recognize  date sensitive
information  when  the  year  changes  to  2000.  Systems  that do not  properly
recognize such  information  could generate  erroneous data or cause a system to
fail.  Management  is in the  process of working  with its  software  vendors to
ensure  that the  Company's  internal  systems are  prepared  for the year 2000.
Management does not anticipate that the Company will incur significant operating
expenses or be required to invest heavily in computer systems improvements to be
year 2000 compliant.  However,  significant  uncertainty  exists  concerning the
potential costs and effects  associated with any year 2000 compliance.  Any year
2000 compliance problem of either the Company, its suppliers, or customers could
materially adversely affect the Company's business, results of operations,  cash
flows, financial condition and prospects.

LIQUIDITY AND CAPITAL RESOURCES

         The  Company's  net cash  used in  operating  activities  decreased  to
$246,000 for the three  months  ended June 30,  1998,  from $5.1 million for the
three months ended June 30, 1997. The main reason for the  significant  decrease
in cash used relates to the Company's transition to profitability in the current
quarter  which  resulted  in net income of  $283,000  compared to a loss of $4.0
million for the quarter ended June 30, 1997.

         The  Company's net cash used by investing  activities  was $2.1 million
for the three  months  ended June 30,  1998  compared  to net cash  provided  by
investing  activities  of $5.2 million for the three months ended June 30, 1997.
For the three months ended June 30, 1998 net purchases of short-term investments
used  $881,000 in cash as compared to $5.7 million  provided by the net proceeds
from the sale and  maturity  of short term  investments  for the same  period in
1997. Equipment purchases for the three months ended June 30, 1998 were $513,000
as compared to $475,000 for the three  months ended June 30, 1997.  The increase
in equipment purchases was primarily for machinery and tooling needed to provide
additional  manufacturing  capacity and, to a lesser degree,  computer equipment
required for increased personnel hires.

         In June 1998,  the Company  entered  into a lease  agreement  for a new
80,000 square foot headquarters,  research and manufacturing facility,  which it
expects to occupy  beginning in early 1999.  Lease  payments on the new building
will  commence  in August  1998 and will be  partially  offset  by the  intended
sublease of  approximately  20,000 square feet of the space. The new facility is
expected to increase the Company's capital investment costs due to the expansion
of its laboratories,  clean room, warehouse and office space and the purchase of
additional  equipment for fiscal year 1999 and beyond. Other assets increased by
$690,000  for the three  months  ended June 30, 1998  primarily as a result of a
$518,000 security deposit and prepayment of rent made in connection with the new
facility lease agreement.

         The Company's net cash  provided by financing  activities  was $190,000
for the three months ended June 30, 1998, compared to net cash used in financing
activities  of $252,000 for the three months ended June 30, 1997. In the current
quarter,  cash was  generated by the exercise of stock options and the repayment
of an officer  loan,  which was  partially  offset by payments  related to notes
payable.

         The Company's  principal source of liquidity at June 30, 1998 consisted
of cash,  cash  equivalents  and short-term  investments  of $30.3 million.  The
Company has borrowed $1.3 million under an equipment credit facility, of which a
principal balance of approximately  $80,000 remained  outstanding as of June 30,
1998. The new facility lease agreement  signed in July 1998 requires a letter of
credit for $1.0 million  dollars.  This amount will be held in a certificate  of
deposit and  classified  on the  balance  sheet in other  assets.  The letter of
credit designates the landlord as beneficiary and provides that the landlord may
draw down on the letter of credit in the amount  equal to any default  under the
lease.  The letter of credit will be required for a minimum of eighteen  months,
after which upon meeting certain financial  criteria,  the letter of credit will
be released.  The facility  lease  agreement  also requires a standard  security
deposit of $518,000 to be held by the lessor for the term of the lease.

         Although  Perclose  believes that current cash balances and  short-term
investments  along with cash generated from the future sales of products will be
sufficient to meet the Company's operating and capital  requirements,  there can
be no assurance that the Company will not require  additional  financing.  There
can be no assurance that additional financing, if required, will be available on
satisfactory  terms or at all. In any event,  Perclose may in the future seek to
raise  additional  funds through bank  facilities,  debt or equity  offerings or
other sources of capital.  Perclose's future liquidity and capital  requirements
will depend on numerous  factors,  including  the extent to which the  Company's
products  gain market  acceptance,  progress of the Company's  clinical  trials,
actions relating to regulatory and reimbursement  matters,  the costs and timing
of  expansion  of  marketing,   sales,  manufacturing  and  product  development
activities,  and  competitive  developments.  There can be no assurance that the
Company will sustain profitability beyond the current quarter.

FACTORS AFFECTING OPERATING RESULTS

         This report contains  forward-looking  statements within the meaning of
Section 27A of the  Securities  Act of 1933 and  Section  21E of the  Securities
Exchange Act of 1934.  The Company's  future  results of  operations  could vary
significantly as a result of the factors described in this section.

 DEPENDENCE  UPON  PROSTAR AND  TECHSTAR  PRODUCTS.  The  Prostar  and  Techstar
products  for   percutaneous   closure  of  arterial   access  sites   following
catheterization  procedures are currently the Company's only marketed  products.
If the Company is unable to  commercialize  the Prostar  and  Techstar  products
successfully in the United States, including future generations of products, the
Company's  business,  financial  condition  and  results of  operations  will be
materially and adversely affected. In addition,  there can be no assurance as to
when or whether the Company will  receive FDA  clearance or approval for sale of
other PVS products or any other products in the United  States.  There can be no
assurance that the Company's  development efforts will be successful or that any
further PVS products or any other product  developed by the Company will be safe
or  effective,  capable  of  being  manufactured  in  commercial  quantities  at
acceptable   costs,   approved  by  appropriate   regulatory  and  reimbursement
authorities or successfully marketed.

 UNCERTAINTY OF MARKET  ACCEPTANCE.  The Company's Prostar and Techstar products
represent  a new method of  closing  arterial  access  sites and there can be no
assurance  that these  products  will gain any  significant  degree of sustained
market  acceptance among  physicians,  patients and health care payors,  even if
necessary  international  and U.S.  regulatory and  reimbursement  approvals are
obtained.  Physicians will not use the Prostar and Techstar products unless they
determine,  based on clinical data and other factors, that these products are an
attractive  alternative to other means of closing arterial access sites and that
the clinical  benefits to the patient and cost savings  achieved  through use of
these  products  outweigh the cost of the  products.  Such  determinations  will
depend, in part, on the ability of the Company's  products to reduce the time to
ambulation   and  the  length  of  hospital  stays   associated   with  coronary
catheterization  procedures.  Failure  of  the  Company's  products  to  achieve
significant  market  acceptance  will  have a  material  adverse  effect  on the
Company's business, financial condition and results of operations.

 HISTORY OF LOSSES AND RISK OF INABILITY TO SUSTAIN  PROFITABILITY.  The Company
has a limited  history of  operations.  Since its  inception in March 1992,  the
Company  has  been  primarily   engaged  in  research  and  development  of  its
percutaneous  arterial access site closure  products.  The Company has generated
limited  revenues  from  international  sales in certain  markets,  which  sales
commenced in December 1994.  Since May 1997,  the Company has generated  limited
revenues from domestic sales. The Company has experienced  significant operating
losses since  inception and, as of June 30, 1998, had an accumulated  deficit of
$41.5  million.  Although the Company  recorded net income in the quarter  ended
June 30,  1998,  there  can be no  assurance  that the  Company  will be able to
increase its level of  profitability or to sustain  profitability.  Factor which
may cause the Company to be unable to increase or sustain  profitability include
those factors set forth in this "Factors Affecting Operation Results" section.

 FLUCTUATIONS IN OPERATING RESULTS.  The Company anticipates that its results of
operations will fluctuate  significantly from quarter to quarter and will depend
upon  numerous  factors,  including  the  extent to which the  Company's  or its
competitors' products gain market acceptance,  introduction of alternative means
for arterial  access site closure and  competitive  developments  and  including
actions relating to regulatory and reimbursement  matters,  progress and results
of clinical trials. Due to the elective nature of many coronary  catheterization
procedures,  patients  may defer such  procedures  during  the  summer  vacation
season.  As a result,  the Company may experience  seasonal  fluctuations in its
results of operations,  particularly  in the second fiscal  quarter.  Results of
operations  will  also  be  affected  by the  timing  of  orders  received  from
distributors  and the  extent  to  which  the  Company  is able  to  expand  its
manufacturing  capabilities.  In  addition,  depending  upon the  timing  of new
product introductions, warranty claims and product returns, the Company may need
to make allowances for product obsolescence,  excess inventory,  warranty claims
and product returns.  While the Company is currently and will likely continue to
make such  allowances,  there can be no assurance that such  allowances  will be
adequate to cover all costs associated with such items.

 GOVERNMENT REGULATION. Clinical testing, manufacture, promotion and sale of the
Company's products are subject to extensive regulation by numerous  governmental
authorities in the United States, principally the FDA, and corresponding foreign
regulatory  agencies.  The Federal Food, Drug, and Cosmetic Act ("FDC Act"), and
other  federal  and state  statutes  and  regulations  govern or  influence  the
testing, manufacture, labeling, advertising, distribution and promotion of drugs
and devices.  Noncompliance  with applicable  requirements  can result in fines,
injunctions,  civil penalties,  recall or seizure of products,  total or partial
suspension of production,  refusal to authorize the marketing of new products or
to allow the Company to enter into  government  supply  contracts,  and criminal
prosecution.  The  Company's  Prostar and Techstar PVS products are regulated as
Class III medical  devices for which FDA approval of a PMA  application  must be
obtained  prior to U.S.  commercial  sales.  In August 1997, a competitor of the
Company petitioned the FDA for review of the PMA approval granted to the Prostar
9F and 11F products. The competitor subsequently withdrew the petition.

         Sales of medical  devices  outside of the United  States are subject to
international  regulatory  requirements  that vary from country to country.  The
time  required  to obtain  approval  for sale  internationally  may be longer or
shorter than that required for FDA approval,  and the  requirements  may differ.
The Company has obtained the  certifications  necessary to enable the CE mark to
be affixed to the Company's  Prostar and Techstar  products for commercial sales
in member  countries  of the  European  Union.  The Company has not obtained all
other such international certifications and there can be no assurance it will be
able to do so in a timely manner. The Company has received  regulatory  approval
to market the Prostar and Techstar  products in Japan. The Company,  through its
Japanese  distributor,  commenced  clinical  trials in Japan  that will form the
basis of an application for reimbursement  approvals in the Japanese health care
system.  There can be no  assurance  Japanese  reimbursement  approvals  will be
obtained in a timely manner or at all.

 COMPETITION AND RISK OF TECHNOLOGICAL OBSOLESCENCE. Competition in the emerging
market for arterial access site closure devices is expected to increase. Most of
the  Company's   competitors  have   significantly   greater  name  recognition,
experience,  financial,  technical, research, marketing, sales, distribution and
other  resources than the Company.  There can be no assurance that the Company's
competitors  will not  succeed  in  developing  or  marketing  technologies  and
products  that are  technologically  superior,  more  effective or  commercially
attractive  than any that are  being  developed  by the  Company,  or that  such
competitors will not succeed in obtaining  regulatory  approval,  introducing or
commercializing any such products prior to the Company.  Such developments could
have a material adverse effect on the Company's  business,  financial  condition
and results of operations.  In addition,  the medical device market is generally
characterized  by  rapid  and  significant  technological  change  and  frequent
emergence  of  new  technologies,  products  and  procedures.  Accordingly,  the
Company's  success will also depend in part on its ability to respond quickly to
medical and technological changes.

 LIMITED  MANUFACTURING  EXPERIENCE  AND  SCALE-UP  RISK.  The  Company has only
limited  experience  in  manufacturing  the Prostar and Techstar  products.  The
Company  currently  manufactures the Prostar and Techstar  products for domestic
and  international  commercial  sales.  There can be no  assurance  that  future
manufacturing  difficulties,  which could have a material  adverse effect on the
Company's  business,  financial  condition and results of  operations,  will not
occur.

         In November 1997, Perclose undertook a voluntary  manufacturer's recall
of specific  lots of Techstar XL 6 french PVS products.  The Company  traced the
problem  resulting in the recall to a defective  mold which resulted in one part
of the product being out of  specification  in particular  production  runs. The
problem was not attributable to a design defect. The Company is not aware of any
increase  in  adverse  patient   consequences  as  a  result  of  these  product
performance  issues.  The Company replaced the recalled Techstar XL 6 units with
Techstar  6 units  in  inventory  at the  time of the  recall.  The  recall  and
replacement  had only an immaterial  effect on its results of operations  during
the third and fourth quarters of fiscal 1998. However, there can be no assurance
that future product problems necessitating recalls will not arise in the future,
and any such future recall could have a material adverse effect on the Company's
business, financial condition and results of operations.

 DEPENDENCE  UPON  KEY  SUPPLIERS.  Perclose  purchases  components  used in its
products  from  various  suppliers  and  relies on single  sources  for  several
components.   For  certain  of  these  components,   there  are  relatively  few
alternative sources of supply.  Establishing additional or replacement suppliers
for any of the components used in the Company's products,  if required,  may not
be accomplished  quickly and could involve  significant  additional  costs.  Any
supply interruption from vendors or failure of the Company to obtain alternative
vendors,  if  required,  for  any of the  components  used  to  manufacture  the
Company's products would limit the Company's ability to manufacture its products
and could  therefore have a material  adverse effect on the Company's  business,
financial condition and results of operations.

 UNCERTAINTY  RELATING  TO  NEW  PRODUCT  DEVELOPMENT.  The  Company's  strategy
involves the design and  development  of new products  designed to allow cardiac
surgeons to automate the rapid placement of sutures in blood vessels during CABG
surgery. The product development process is time-consuming and costly, and there
can be no assurance that product  development  will be  successfully  completed,
that necessary regulatory  clearances or approvals will be granted by the FDA on
a timely basis,  or at all, or that the potential  products will achieve  market
acceptance.  Failure by the  Company to  develop,  obtain  necessary  regulatory
clearances or approvals for, or successfully market potential new products could
have a material adverse effect on the Company's  business,  financial  condition
and results of operations.

 RELIANCE ON PATENTS AND  PROTECTION OF  PROPRIETARY  TECHNOLOGY.  The Company's
ability to compete effectively will depend in part on its ability to develop and
maintain  proprietary aspects of its technology.  There can be no assurance that
the Company's issued patents,  any patents that may be issued as a result of the
Company's U.S. or international patent  applications,  or the patent under which
the Company has license rights,  will offer any degree of protection.  There can
be no  assurance  that any patents that may be issued or licensed to the Company
or any of the Company's patent applications will not be challenged,  invalidated
or  circumvented  in the future.  In addition,  there can be no  assurance  that
competitors,  many of which have substantial resources and have made substantial
investments  in  competing  technologies,  will not seek to apply for and obtain
patents that will  prevent,  limit or interfere  with the  Company's  ability to
make, use or sell its products  either in the United States or in  international
markets.

         In March  1998,  the  Company  was sued for  patent  infringement  by a
competitor, Kensey Nash Corporation, and that competitor's distributor, Sherwood
Medical, a subsidiary of Tyco International Ltd.

         The  medical  device  industry  has  been  characterized  by  extensive
litigation  regarding  patents  and  other  intellectual  property  rights.  Any
litigation  or  interference  proceedings,  including the  proceeding  currently
pending against the Company,  will result in substantial  expense to the Company
and  significant  diversion of effort by the Company's  technical and management
personnel.  An adverse  determination in the current pending or in litigation or
interference  proceedings  to which the Company may become a party could subject
the Company to  significant  liabilities to third parties or require the Company
to seek licenses from third parties.  Although patent and intellectual  property
disputes in the medical device area have often been settled through licensing or
similar arrangements, costs associated with such arrangements may be substantial
and could include ongoing royalties. Furthermore, there can be no assurance that
necessary licenses would be available to the Company on satisfactory terms if at
all.  Adverse  determinations  in a judicial  or  administrative  proceeding  or
failure  to  obtain   necessary   licenses   could   prevent  the  Company  from
manufacturing  and selling  its  products,  which would have a material  adverse
effect on the Company's business, financial condition and results of operations.

 UNCERTAINTY OF  THIRD-PARTY  REIMBURSEMENT.  In the United States,  health care
providers,  such as hospitals and physicians that purchase  medical devices such
as the Company's  products,  generally rely on third-party  payors,  principally
federal  Medicare,  state  Medicaid  and  private  health  insurance  plans,  to
reimburse all or part of the cost of therapeutic and diagnostic  catheterization
procedures. Reimbursement for catheterization procedures performed using devices
that have  received  FDA  approval has  generally  been  available in the United
States. The Company  anticipates that in a prospective  payment system,  such as
the disease  related  group  ("DRG")  system  utilized by Medicare,  and in many
managed  care  systems  used by  private  health  care  payors,  the cost of the
Company's  products will be incorporated  into the overall cost of the procedure
and that there will be no separate,  additional  reimbursement for the Company's
products.  Failure by  physicians,  hospitals  and other users of the  Company's
products  to  obtain  sufficient  reimbursement  from  health  care  payors  for
procedures  in which the  Company's  products  are used or  adverse  changes  in
governmental and private third-party  payors' policies toward  reimbursement for
such procedures would have a material adverse effect on the Company's  business,
financial condition and results of operations.

         In international  markets,  market acceptance of the Company's products
may  be  dependent  in  part  upon  the  availability  of  reimbursement  within
prevailing  health  care  payment  systems.  Failure  of the  Company to receive
international  reimbursement  approvals  could have an adverse  effect on market
acceptance of the Company's products in the international  markets in which such
approvals are sought.

 PRODUCT LIABILITY AND RECALL RISK; LIMITED INSURANCE COVERAGE.  The manufacture
and sale of medical products entail significant risk of product liability claims
or  product  recalls.  There can be no  assurance  that the  Company's  existing
insurance  coverage  limits  are  adequate  to  protect  the  Company  from  any
liabilities  it might incur in connection  with the clinical  trials or sales of
its products.  In addition,  the Company may require increased product liability
coverage as its products are further commercialized. Such insurance is expensive
and in the  future  may not be  available  on  acceptable  terms,  if at all.  A
successful  product  liability  claim or series of claims  brought  against  the
Company  in  excess of its  insurance  coverage,  or a recall  of the  Company's
products,  could  have a  material  adverse  effect on the  Company's  business,
financial condition and results of operations.

          POSSIBLE  VOLATILITY OF STOCK PRICE. The stock market has recently and
from time to time experienced significant price and volume fluctuations that are
unrelated to the  operating  performance  of particular  companies.  These broad
market  fluctuations  may  adversely  affect the market  price of the  Company's
common stock.  In addition,  the market price of the Company's  shares of common
stock is likely to be  highly  volatile.  Factors  such as  fluctuations  in the
Company's operating results,  announcements of technological  innovations or new
products by the Company or its  competitors,  FDA and  international  regulatory
actions,  actions  with  respect to  reimbursement  matters,  developments  with
respect to patents or  proprietary  rights and related  litigation  to which the
Company is or may become a party,  public  concern as to the safety of  products
developed by the Company or others,  changes in health care policy in the United
States and  internationally,  changes in stock  market  analyst  recommendations
regarding the Company,  other  medical  device  companies or the medical  device
industry  generally and general market conditions may have a significant  effect
on the market price of the common stock.

<PAGE>

                           PART II. OTHER INFORMATION


Item 1.   Legal Proceedings

          In March 1998, the Company was sued by Kensey Nash  Corporation,
          and such company's  distributor,  Sherwood Medical (a subsidiary
          of Tyco  International,  Ltd.) for patent  infringement  . There
          were no material  developments  with respect to this  litigation
          during the quarter ended June 30, 1998.
                                                                   
Item 2.  Changes in Securities ...............................       None
Item 3.  Defaults upon Senior Securities......................       None
Item 4.  Submission of Matters to a Vote of Security Holders..       None
Item 5.  Other Information....................................       None
Item 6.  Exhibits and Reports on Form 8-K

         a) Exhibits: The exhibits listed in the Index to Exhibits are filed as
                      a part hereof and are incorporated by reference.


                                INDEX TO EXHIBITS

Exhibit No.                       Description
- -----------                       -----------
10.17    Lease Agreement dated June  24, 1998  between  Registrant and Seaport
         Centre  Associates,  LLC for facility  located at 300 & 400 Saginaw,
         Redwood City, California.
27.1     Financial Data Schedule-Current Year (Edgar version only).


          b)          Reports of Form 8-K: The Company did not file any reports 
                      of Form 8-K for the three months ended June 30, 1998.




<PAGE>


                                   SIGNATURES

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  Registrant  has duly  caused this 10-Q report to be signed on its behalf by
the undersigned thereunto duly authorized.

Date:  August 7, 1998               PERCLOSE, INC.


                                    /S/ HENRY A. PLAIN, JR.
                                    -----------------------
                                    Henry A. Plain, Jr.
                                    PRESIDENT AND CHIEF EXECUTIVE OFFICER


                                    /S/ KENNETH E. LUDLUM
                                    ---------------------
                                    Kenneth E. Ludlum
                                    VICE PRESIDENT FINANCE AND ADMINISTRATION,
                                    CHIEF FINANCIAL OFFICER 
                                    (PRINCIPAL FINANCIAL AND ACCOUNTING OFFICER)




<PAGE>







                                 EXHIBIT 10.17




                                 LEASE AGREEMENT


                                     between


                         SEAPORT CENTRE ASSOCIATES, LLC
                                  as "Landlord"


                                       and


                                 PERCLOSE, INC.
                                   as "Tenant"



<PAGE>



                                TABLE OF CONTENTS

SECTION                                                          PAGE


1. PREMISES........................................................4

2. TERM; POSSESSION................................................4

3. RENT ...........................................................5

4. SECURITY DEPOSIT................................................9

5. USE AND COMPLIANCE WITH LAWS....................................9

6. TENANT IMPROVEMENTS & ALTERATIONS..............................12

7. MAINTENANCE AND REPAIRS........................................14

8. TENANT'S TAXES.................................................15

9. UTILITIES......................................................16

10. EXCULPATION AND INDEMNIFICATION...............................17

11. INSURANCE.....................................................18

12. DAMAGE OR DESTRUCTION.........................................20

13. CONDEMNATION..................................................22

14. ASSIGNMENT AND SUBLETTING.....................................23

15. DEFAULT AND REMEDIES..........................................27

16. LATE CHARGE AND INTEREST......................................29

17. WAIVER........................................................29

18. ENTRY, INSPECTION AND CLOSURE.................................29

19. SURRENDER AND HOLDING OVER....................................30

20. ENCUMBRANCES..................................................31

21. ESTOPPEL CERTIFICATES AND FINANCIAL STATEMENTS................32

22. NOTICES.......................................................32

23. ATTORNEYS' FEES...............................................33

24. QUIET POSSESSION..............................................33

25. SECURITY MEASURES.............................................33

26. FORCE MAJEURE.................................................33

27. RULES AND REGULATIONS.........................................33

28. LANDLORD'S LIABILITY..........................................34

29. CONSENTS AND APPROVALS........................................34

30. BROKERS.......................................................34

31. RELOCATION OF PREMISES........................................35

32. ENTIRE AGREEMENT..............................................35

33. MISCELLANEOUS.................................................35

34. AUTHORITY.....................................................35

                                       i

<PAGE>


                             INDEX OF DEFINED TERMS



<PAGE>




Additional Rent.....................................7
Alterations........................................12
Award..............................................22
Broker.............................................35
Building............................................4
Building Rules.....................................34
Building Systems...................................10
Claims.............................................18
Commencement Date...................................4
Condemnation.......................................22
Condemnor..........................................22
Controls...........................................16
Date of Condemnation...............................22
Development.........................................4
Encumbrance........................................31
Environmental Losses...............................11
Environmental Requirements.........................10
Event of Default...................................27
Expiration Date.....................................4
Handled by Tenant..................................10
Handling by Tenant.................................10
Hazardous Materials................................10
HVAC...............................................10
Interest Rate......................................29
Laws................................................5
MEP Systems........................................14
Mortgagee..........................................32
Operating Costs.....................................5
Parking Facility....................................4
Permitted Hazardous Materials......................11
Premises............................................4
Project.............................................4
Property............................................4
Property Manager...................................19
Proposed Transferee................................24
Rent................................................9
Rental Tax.........................................16
Representatives....................................10
Scheduled Commencement Date.........................4
Security Deposit....................................9
Taxes...............................................7
Tenant's Share......................................7
Tenant's Taxes.....................................16
Tenant Improvements................................12
Term................................................4
Trade Fixtures.....................................14
Transfer...........................................24
Transferee.........................................25
Visitors...........................................10

                                       ii

<PAGE>







                             BASIC LEASE INFORMATION

           THE   EFFECTIVENESS  OF  THIS  LEASE  IS  CONDITIONED  UPON  LANDLORD
           OBTAINING  POSSESSION  OF THE  PREMISES  FROM AN EXISTING  TENANT AND
           DELIVERING POSSESSION OF THE INITIAL PREMISES TO TENANT IN ACCORDANCE
           WITH THE PROVISIONS OF SECTION 2 OF THIS LEASE

Lease Date:                        For identification purposes only, the date
                                   of this Lease is June 24, 1998

Landlord:                          SEAPORT CENTRE ASSOCIATES, LLC, a California
                                   limited liability company

Tenant:                            PERCLOSE, INC., a Delaware corporation

Project:                           Seaport Centre Phase Three (West)

Development:                       Seaport Centre Phases One, Two and Three,
                                   consisting of 26 buildings, the
                                   underlying land and associated land.

Building Addresses:                Building 25:  400 Saginaw
                                   Building 26:  300 Saginaw

Rentable Area of Buildings:        Building 25:Approximately 60,841 square feet
                                   Building 26:Approximately 19,483 square feet
                                   Total Buildings 25 & 26:Approximately 80,324
                                   square feet

Rentable Area of Project:          Approximately 287,402 square feet

Premises (consisting of two        (a) Building Number: 25
buildings):                            Rentable Area:Approximately 60,841
                                       square feet

                                   (b) Building Number: 26
                                       Rentable Area:Approximately 19,483 square
                                       feet

Term:                              120 full calendar months (plus any partial
                                   month at the beginning of the Term)

Scheduled Commencement Date:       August 1, 1998

Expiration Date:                   The last day of the 120th full calendar month
                                   in the Term

Base Rent:                         Building 25:

                                      Months 1 - 12:  $127,766.10  per month
                                      (based upon a monthly rate of $2.10
                                      per square foot of rentable area in
                                      Building 25, NNN).

                                   Building 26:
                                      Months 1 - 12:  $44,810.90  per  month
                                      (based upon a monthly rate of $2.30
                                      per square foot of rentable area in
                                      Building 26, NNN).

                                   Total Base Rent for Buildings 25 and 26
                                   combined:
                                   Months 1 - 12: $172,577.00 per month, NNN.

                                   THE TOTAL BASE RENT FOR BUILDINGS
                                   25 AND 26 COMBINED SHALL INCREASE ON EACH
                                   ANNIVERSARY   OF   THE   COMMENCEMENT   DATE
                                   PURSUANT TO THE PROVISIONS OF SECTION 35 OF
                                   THIS LEASE.

Maintenance, Operating Costs       This is a "triple net lease" where Tenant is
                                   responsible for maintenance, and Taxes:
                                   operating costs and taxes, all in accordance
                                   with the applicable provisions of the Lease.

Tenant's Share:                    27.95%

Security Deposit:                  (a) Cash of $517,731.00, plus

                                   (b) a Letter  of  Credit  in the  amount  of
                                       $1,000,000.00,   subject   to,   and  in
                                       accordance   with,   the  provisions  of
                                       Section 36 of this Lease.


Landlord's Address for Payment     Seaport Centre Associates, LLC
of Rent:                           Ten Almaden Boulevard, Suite 430
                                   San Jose, CA 95113

Landlord's Address                 Seaport Centre Associates, LLC
for Notices:                       c/o William Wilson & Associates
                                   Ten Almaden Boulevard, #430
                                   San Jose, CA 95113

                                   with a copy to:

                                   Seaport Centre Associates, LLC
                                   c/o William Wilson & Associates
                                   2929 Campus Drive, Suite 450
                                   San Mateo, CA  94403
                                   Attn:  General Counsel

Tenant's Address                   400 Saginaw
for Notices:                       Redwood City, CA 94063

Broker(s):                         BT Commercial and Cornish & Carey

Guarantor(s):                      (none)

Property Manager:                  William Wilson & Associates

Additional Provisions:              35.    Annual Cost Of Living Adjustments to
                                           Base Rent.
                                    36.    Letter Of Credit.
                                    37.    Parking.
                                    38.    Right Of First Offer.
                                    39.    Extension Option.
                                    40.    Landlord's Improvements



Exhibits:
Exhibit A:........         The Premises
Exhibit B:........         Construction Rider
Exhibit C:........         Building Rules
Exhibit D:........         Additional Provisions


         The Basic Lease  Information  set forth above is part of the Lease.  In
the event of any conflict  between any provision in the Basic Lease  Information
and the Lease, the Lease shall control.

<PAGE>



         THIS  LEASE is made as of the Lease  Date set forth in the Basic  Lease
Information,  by  and  between  the  Landlord  identified  in  the  Basic  Lease
Information  ("Landlord"),   and  the  Tenant  identified  in  the  Basic  Lease
Information ("Tenant"). Landlord and Tenant hereby agree as follows:

1.       PREMISES.  Landlord  hereby leases to Tenant,  and Tenant hereby leases
from Landlord,  upon the terms and subject to the conditions of this Lease,  and
subject to covenants,  conditions and  restrictions  recorded in the real estate
records in the county in which the Property is located,  the space identified in
the Basic Lease  Information as the Premises (the  "Premises"),  in the Building
located  at  the  address   specified  in  the  Basic  Lease   Information  (the
"Building"). The approximate configuration and location of the Premises is shown
on Exhibit A.  Landlord and Tenant agree that the rentable  area of the Premises
for all purposes  under this Lease shall be the Rentable  Area  specified in the
Basic Lease  Information.  The Building,  together  with the parking  facilities
serving the Building  (the  "Parking  Facility"),  and the  parcel(s) of land on
which the Building and the Parking  Facility  are  situated  (collectively,  the
"Property"),  is part of the Project  identified in the Basic Lease  Information
(the "Project"),  which is part of the Development identified in the Basic Lease
Information (the "Development").

2.       TERM;  POSSESSION.  The term of this Lease (the "Term") shall commence
on the Commencement Date as described below and, unless sooner terminated, shall
expire on the  Expiration  Date set forth in the Basic  Lease  Information  (the
"Expiration  Date"). The "Commencement  Date" shall be the earlier of (a) thirty
(30) days after the date on which Landlord tenders possession of the Premises to
Tenant by written  notice  (after the  Existing  Tenant has vacated the Premises
upon complete  execution of a  termination  agreement  with the Existing  Tenant
pursuant to the provisions of the next  succeeding  paragraph);  or (b) the date
upon which Tenant,  with Landlord's  written  permission,  actually occupies and
conducts  business in any portion of the Premises.  The parties  anticipate that
the Commencement Date will occur on or about the Scheduled Commencement Date set
forth in the  Basic  Lease  Information  (the  "Scheduled  Commencement  Date");
provided,  however, that Landlord shall not be liable for any claims, damages or
liabilities  if the  Premises  are not  ready  for  occupancy  by the  Scheduled
Commencement Date. When the Commencement Date has been established, Landlord and
Tenant shall at the request of either party  confirm the  Commencement  Date and
Expiration Date in writing.

Tenant  understands and agrees that the Premises are currently leased by another
tenant (the "Existing Tenant"). Landlord agrees to use its good faith efforts to
negotiate  a  termination  of  lease  with the  Existing  Tenant  and to  regain
possession  of the  Premises  from the  Existing  Tenant by June 22,  1998,  and
deliver  possession of the Premises to Tenant on July 15, 1998.  Notwithstanding
any provision contained herein to the contrary,  Landlord shall not be obligated
to pay any  consideration  to the Existing Tenant in order to gain possession of
the Premises.  After  Landlord and Tenant have  completely  executed this Lease,
then  upon  the  later  of (a) the  complete  execution  of a lease  termination
agreement  by Landlord  and the Existing  Tenant,  or (b) June 15, 1998,  Tenant
shall have access to the Premises for inspection of the Premises, subject to the
terms of this  Lease,  including  Tenant  delivering  to  Landlord  evidence  of
insurance  required under this Lease,  except that Tenant shall not be permitted
to commence  construction  of Tenant  Improvements  in the Premises prior to the
Commencement Date.  Notwithstanding the foregoing, if Landlord has not delivered
possession of the Premises to Tenant by October 14, 1998,  Tenant shall have the
right to terminate this Lease by written  notice to Landlord,  and upon any such
termination  by Tenant,  Landlord  promptly  shall return to Tenant (i) all sums
paid by Tenant to Landlord under this Lease and (ii) the Letter of Credit issued
in favor of Landlord in connection with this Lease.

3.       RENT.

         3.1 Base Rent. Tenant agrees to pay to Landlord the Base Rent set forth
in the Basic Lease Information, without prior notice or demand, on the first day
of each and every calendar month during the Term,  except that Base Rent for the
first  full  calendar  month in which  Base Rent is  payable  shall be paid upon
Tenant's  execution  of this  Lease and Base Rent for any  partial  month at the
beginning of the Term shall be paid on the Commencement  Date. Base Rent for any
partial month at the beginning or end of the Term shall be prorated based on the
actual number of days in the month.

         If the Basic Lease Information  provides for any change in Base Rent by
reference to years or months (without  specifying  particular dates), the change
will  take  effect  on the  applicable  annual  or  monthly  anniversary  of the
Commencement  Date  (which  won't  necessarily  be the first  day of a  calendar
month).

         3.2      Additional Rent:  Operating Costs and Taxes.

                  (a)      Definitions.

                           (1)  "Operating  Costs"  means all costs of managing,
operating,   maintaining  and  repairing  the  Project,   including  all  costs,
expenditures, fees and charges for: (A) operation, maintenance and repair of the
Project  (including  maintenance,  repair  and  replacement  of glass,  the roof
covering or membrane,  and landscaping);  (B) utilities and services  (including
telecommunications  facilities  and  equipment,  recycling  programs  and  trash
removal),  and associated  supplies and materials;  (C) compensation  (including
employment  taxes  and  fringe  benefits)  for  persons  (at or below  the level
equivalent to senior property manager or senior engineering manager) who perform
duties in connection with the operation,  management,  maintenance and repair of
the Project,  such  compensation to be  appropriately  allocated for persons who
also perform duties unrelated to the Project;  (D) property  (including coverage
for earthquake and flood if carried by Landlord),  liability,  rental income and
other insurance relating to the Project, and expenditures for deductible amounts
paid under such insurance;  (E) licenses,  permits and  inspections  except when
incurred in connection with licenses,  permits and  inspections  associated with
improving space in the Project for any tenants (including Tenant); (F) complying
with the  requirements of any law,  statute,  ordinance or governmental  rule or
regulation  or  any  orders  pursuant   thereto   (collectively   "Laws");   (G)
amortization  of capital  replacements,  repairs or  improvements to the Project
(including those capital replacements, repairs or improvements to the Project in
order to comply with Laws),with  interest on the unamortized balance at the rate
paid by Landlord on funds borrowed to finance such capital  improvements (or, if
Landlord finances such  improvements out of Landlord's funds without  borrowing,
the rate that  Landlord  would have paid to borrow  such  funds,  as  reasonably
determined  by  Landlord),  over such useful life as Landlord  shall  reasonably
determine in accordance with generally accepted accounting principles; (H) up to
2,000  rentable  square  feet in an office for the  management  of the  Project,
including  expenses of furnishing and equipping such office and the rental value
of any  space  occupied  for  such  purposes  the  costs  of such  office  which
management  office  costs shall be  equitably  allocated  if the office  manages
buildings other than those in the Project;  (I) property  management fees not to
exceed the rate of  property  management  fees  charged by owners of  comparable
commercial properties in the vicinity of the Project; (J) accounting,  legal and
other  professional  services  incurred in connection  with the operation of the
Project and the  calculation  of  Operating  Costs and Taxes;  (K) a  reasonable
allowance  for  depreciation  on machinery  and  equipment  used to maintain the
Project  and on  other  personal  property  owned  by  Landlord  in the  Project
(including  window coverings and carpeting in common areas);  (L) contesting the
validity  or  applicability  of any Laws that may  affect the  Project;  (M) the
Project's  share of any  shared or common  area  maintenance  fees and  expenses
(including costs and expenses of operating, managing, owning and maintaining the
Parking Facility and the common areas of the Project,  any fitness center in the
Development, the fees and charges from the Seaport Centre Owners Association and
any other fees and  expenses  shared  with the  Development);  and (N) any other
cost, expenditure,  fee or charge, whether or not hereinbefore described,  which
in accordance with generally  accepted  property  management  practices would be
considered  an expense of managing,  operating,  maintaining  and  repairing the
Project. Operating Costs for any calendar year during which average occupancy of
the Project is less than one hundred  percent  (100%) shall be calculated  based
upon the  Operating  Costs that would have been  incurred  if the Project had an
average occupancy of one hundred percent (100%) during the entire calendar year.

     Operating Costs shall not include (i) costs of special services rendered to
individual  tenants  (including Tenant) for which a special charge is made; (ii)
points,  fees and other charges for  Landlord's  financing or refinancing of the
Project, interest and principal payments on loans or indebtedness secured by the
Project and penalties or charges for failure to perform  Landlord's  obligations
under  any such  financing;  (iii)  costs of  improvements  for  Tenant or other
tenants of the Project; (iv) costs of services or other benefits of a type which
are not  available  to Tenant  but  which  are  available  to other  tenants  or
occupants,  and costs for which  Landlord is  reimbursed by other tenants of the
Project  other than through  payment of tenants'  shares of Operating  Costs and
Taxes;  (v) utility  charges  paid by Tenant (and other  tenants in the Project)
directly to the applicable  public utility  company;  (vi) leasing  commissions,
attorneys' fees and other expenses  incurred in connection with leasing space in
the Project or enforcing such leases;  (vii) advertising and promotional  costs;
(viii)  costs of  repairs  directly  resulting  from the  negligence  or willful
misconduct  of  Landlord,  its agents or  employees;  (ix) repairs or other work
occasioned by fire, windstorm or other casualty or hazard to the extent Landlord
receives  insurance  proceeds;   (x)  repairs  or  rebuilding   necessitated  by
condemnation  to the  extent  Landlord  receives  proceeds  from the  applicable
condemning  authority;  (xi) costs associated with the operation of the business
of the partnership or entity which constitutes Landlord, or the operation of any
parent,  subsidiary or affiliate of Landlord, as the same are distinguished from
the costs of operation of the  Building;  (xii)  depreciation  or  amortization,
other than as  specifically  enumerated  in the  definition  of Operating  Costs
above; and (xiii) costs, fines or penalties incurred due to Landlord's violation
of any Law.

                           (4)  "Taxes"  means:  all  real  property  taxes  and
general, special or district assessments or other governmental  impositions,  of
whatever kind, nature or origin, imposed on or by reason of the ownership or use
of the Project; governmental charges, fees or assessments for transit or traffic
mitigation   (including   area-wide   traffic   improvement    assessments   and
transportation  system  management  fees),   housing,   police,  fire  or  other
governmental  service or purported  benefits to the Project;  personal  property
taxes assessed on the personal property of Landlord used in the operation of the
Project;  service  payments in lieu of taxes and taxes and  assessments of every
kind and nature  whatsoever  levied or assessed in addition to, in lieu of or in
substitution  for existing or additional real or personal  property taxes on the
Project or the personal property described above; any increases in the foregoing
caused  by  changes  in  assessed  valuation,  tax  rate  or  other  factors  or
circumstances;  and the reasonable cost of contesting by appropriate proceedings
the amount or validity of any taxes,  assessments  or charges  described  above.
Taxes shall not include any state and federal personal or corporate income taxes
measured by the income of Landlord from all sources (other than taxes on rent at
the Project), as well as any franchise, inheritance, or estate, succession, gift
tax, or capital levy, or any taxes on property  located  outside of the Project.
Landlord  agrees that for the purpose of this Lease any special  assessments  or
special taxes for public  improvements  to the property will be amortized,  with
interest at the rate  payable to the  assessing  or taxing  authority,  over the
maximum time Landlord is permitted to pay such special assessment or special tax
without  penalty.  To the extent  paid by Tenant or other  tenants as  "Tenant's
Taxes" (as defined in Section 8 - Tenant's  Taxes),  "Tenant's  Taxes"  shall be
excluded from Taxes.

                           (5) "Tenant's Share" means the Rentable Area of the
Premises divided by the total Rentable Area of the Project,  as set forth in the
Basic Lease  Information.  If the Rentable Area of the Project is changed or the
Rentable Area of the Premises is changed by Tenant's leasing of additional space
hereunder or for any other reason, Tenant's Share shall be adjusted accordingly.

                  (b)      Additional Rent.

                           (1) Tenant  shall pay Landlord as  "Additional  Rent"
for each calendar year or portion  thereof during the Term Tenant's Share of the
sum of (x) the amount of Operating Costs, and (y) the amount of Taxes.

                           (2) Prior to the Commencement Date and each calendar
year  thereafter,  Landlord  shall  notify  Tenant  of  Landlord's  estimate  of
Operating Costs,  Taxes and Tenant's  Additional Rent for the following calendar
year (or first partial year following the Commencement Date).  Commencing on the
Commencement Date, and in subsequent calendar years, on the first day of January
of each calendar year and continuing on the first day of every month  thereafter
in  such  year,  Tenant  shall  pay  to  Landlord  one-twelfth  (1/12th)  of the
Additional  Rent,  as  reasonably  estimated by Landlord for such full  calendar
year. If Landlord thereafter  reasonably estimates that Operating Costs or Taxes
for such year will vary from Landlord's prior estimate,  Landlord may, by notice
to  Tenant,  revise  the  estimate  for such year  (and  Additional  Rent  shall
thereafter be payable based on the revised estimate).

                           (3) As soon as reasonably  practicable  after the end
of each calendar year, Landlord shall furnish Tenant a statement with respect to
such year,  showing Operating Costs, Taxes and Additional Rent for the year, and
the total payments made by Tenant with respect thereto. Unless Tenant raises any
objections to Landlord's  statement within ninety (90) days after receipt of the
same, such statement shall  conclusively be deemed correct and Tenant shall have
no right  thereafter  to  dispute  such  statement  or any item  therein  or the
computation  of  Additional  Rent based  thereon.  If Tenant does object to such
statement,  then Landlord shall provide Tenant with  reasonable  verification of
the figures shown on the statement and the parties shall negotiate in good faith
to resolve any disputes.  Any  objection of Tenant to  Landlord's  statement and
resolution of any dispute shall not postpone the time for payment of any amounts
due Tenant or Landlord based on Landlord's  statement,  nor shall any failure of
Landlord to deliver  Landlord's  statement in a timely manner  relieve Tenant of
Tenant's  obligation  to pay  any  amounts  due  Landlord  based  on  Landlord's
statement.  Notwithstanding  anything to the  contrary  contained in this Lease,
Tenant shall not be responsible  for payment of Operating Costs billed to Tenant
more than three (3) years  following the  applicable  calendar year. In no event
shall the  Operating  Costs used by Landlord in  determining  Tenant's  Share of
Operating Costs exceed one hundred percent (100%) of the actual  Operating Costs
incurred  by  Landlord  (including  the  management  fees  contained  above)  in
connection with the Project.

                           (4) If Tenant's Additional Rent as finally determined
for any  calendar  year  exceeds  the total  payments  made by Tenant on account
thereof,  Tenant shall pay Landlord the deficiency within the earlier of (a) the
later of (ii) twenty (20) days after Tenant's  receipt of Landlord's  statement,
or (ii) the first (1st) day of the month when Tenant's next  installment of Base
Rent is payable to Landlord,  or (b) thirty-one (31) days after Tenant's receipt
of Landlord's statement. If the total payments made by Tenant on account thereof
exceed Tenant's  Additional Rent as finally  determined for such year,  Tenant's
excess payment shall be credited toward the rent next due from Tenant under this
Lease or refunded to Tenant if such credit is payable  following the  expiration
of the Term. For any partial  calendar year at the beginning or end of the Term,
Additional  Rent shall be prorated on the basis of a 365-day  year by  computing
Tenant's  Share of the  Operating  Costs and Taxes for the entire  year and then
prorating  such amount for the number of days  during such year  included in the
Term.  Notwithstanding  the  termination  of this Lease,  Landlord  shall pay to
Tenant or Tenant shall pay to Landlord,  as the case may be,  within thirty (30)
days after Tenant's  receipt of Landlord's final statement for the calendar year
in which this Lease terminates,  the difference between Tenant's Additional Rent
for  that  year,  as  finally  determined  by  Landlord,  and the  total  amount
previously paid by Tenant on account thereof.

     If for any reason Taxes for any year during the Term are reduced,  refunded
or otherwise changed, Tenant's Additional Rent shall be adjusted accordingly. If
Taxes are  temporarily  reduced as a result of space in the Project being leased
to a tenant that is entitled to an exemption from property taxes or other taxes,
then for purposes of  determining  Additional  Rent for each year in which Taxes
are reduced by any such  exemption,  Taxes for such year shall be  calculated on
the basis of the amount the Taxes for the year would have been in the absence of
the  exemption.  The  obligations  of  Landlord  to refund  any  overpayment  of
Additional  Rent and of Tenant to pay any Additional  Rent not  previously  paid
shall survive the expiration of the Term.

         3.3   Payment of Rent. All amounts  payable or  reimbursable  by Tenant
under this Lease,  including late charges and interest  (collectively,  "Rent"),
shall constitute rent and shall be payable and recoverable as rent in the manner
provided in this Lease.  All sums  payable to Landlord on demand under the terms
of this Lease shall be payable within the earlier of (a) the later of (i) twenty
(20) days after  Tenant's  receipt of  Landlord's  statement,  or (ii) the first
(1st) day of the month when Tenant's next installment of Base Rent is payable to
Landlord,  or (b)  thirty-one  (31) days after  Tenant's  receipt of  Landlord's
statement.  All rent shall be paid without  offset,  recoupment  or deduction in
lawful money of the United States of America to Landlord at  Landlord's  Address
for  Payment  of Rent as set forth in the Basic  Lease  Information,  or to such
other person or at such other place as Landlord may from time to time designate.

4.       SECURITY  DEPOSIT.  On  execution of this Lease,  Tenant shall  deposit
with  Landlord  the  amount  specified  in the Basic  Lease  Information  as the
Security  Deposit,  if  any  (the  "Security  Deposit"),  as  security  for  the
performance of Tenant's  obligations  under this Lease.  Landlord may (but shall
have no obligation to) use the Security  Deposit or any portion  thereof to cure
any Event of Default under this Lease or to  compensate  Landlord for any damage
Landlord  incurs as a result of  Tenant's  failure  to perform  any of  Tenant's
obligations  hereunder.  In such event Tenant shall pay to Landlord on demand an
amount sufficient to replenish the Security Deposit. If Tenant is not in default
at the  expiration or  termination  of this Lease,  then within thirty (30) days
following the  expiration or  termination of this Lease Landlord shall return to
Tenant the Security Deposit or the balance thereof then held by Landlord and not
applied as provided  above.  Landlord may  commingle  the Security  Deposit with
Landlord's  general  and other  funds.  Landlord  shall not be  required  to pay
interest on the Security Deposit to Tenant.

5.       USE AND COMPLIANCE WITH LAWS.

         5.1   Use. The Premises shall be used and occupied for general business
office and administrative purposes, manufacturing and warehousing,  research and
development  and for other legal  related uses  incidental to the operation of a
medical  instrumentation  company, and for no other use or purpose. Tenant shall
comply with all present and future Laws relating to Tenant's use or occupancy of
the Premises,  except that repairs or  alterations  required to comply with Laws
generally  applicable  to the condition of the Premises for use as office space,
and not required or caused by Tenant's  particular  use or  activities or by any
Alterations made or proposed by Tenant,  shall be made by Landlord (and the cost
thereof  shall be included in or excluded  from  Operating  Costs as provided in
Section 3.2(a)(3) above),  and shall observe the "Building Rules" (as defined in
Section 27 - Rules and  Regulations).  Tenant shall not do, bring,  keep or sell
anything in or about the Premises  that is  prohibited  by, or that will cause a
cancellation of or an increase in the existing premium for, any insurance policy
covering the Property or any part thereof.  Tenant shall not permit the Premises
to be occupied or used in any manner that will  constitute  waste or a nuisance,
or disturb  the quiet  enjoyment  of or  otherwise  annoy  other  tenants in the
Project.  Without  limiting the  foregoing,  the  Premises  shall not be used to
manufacture goods or products, for educational activities,  practice of medicine
or any of the healing arts, providing social services,  for any governmental use
(including embassy or consulate use), or for personnel agency,  customer service
office,  studios  for  radio,  television  or  other  media,  travel  agency  or
reservation  center operations or uses.  Notwithstanding  the foregoing,  Tenant
(including  its  Affiliates)  shall  have the  right to use from  time to time a
portion of the  Premises  for training  sessions  for  Tenant's  employees,  and
customers so long as the number of people  attending  such training at any given
time comply with the parking limitations  contained in Section 35 of this Lease.
Tenant  shall not,  without the prior  consent of  Landlord,  (i) bring into the
Building or the Premises  anything  that may cause  substantial  noise,  odor or
vibration,  overload  the floors in the  Premises or the  Building or any of the
heating,  ventilating  and  air-conditioning  ("HVAC"),  mechanical,   plumbing,
electrical,  fire  protection,  life  safety,  security or other  systems in the
Building  ("Building  Systems"),  or jeopardize the structural  integrity of the
Building  or any part  thereof;  (ii)  connect  to the  utility  systems  of the
Building any apparatus,  machinery or other  equipment other than typical office
equipment;  or (iii)  connect  to any  electrical  circuit in the  Premises  any
equipment or other load with aggregate  electrical power  requirements in excess
of 80% of the rated capacity of the circuit.

         Tenant shall honor and comply with the terms of all recorded covenants,
conditions and restrictions relating to the Property.

         5.2   Hazardous Materials.

               (a)         Definitions.

                           (1) "Hazardous  Materials"  shall mean any substance:
(A)  that  now  or  in  the  future  is  regulated  or  governed  by,   requires
investigation  or  remediation  under,  or  is  defined  as a  hazardous  waste,
hazardous  substance,  pollutant or contaminant under any governmental  statute,
code, ordinance, regulation, rule or order, and any amendment thereto, including
the  Comprehensive  Environmental  Response  Compensation  and Liability Act, 42
U.S.C.  ss.9601 et seq.,  and the Resource  Conservation  and  Recovery  Act, 42
U.S.C. ss.6901 et seq., or (B) that is toxic, explosive,  corrosive,  flammable,
radioactive, carcinogenic, dangerous or otherwise hazardous, including gasoline,
diesel fuel, petroleum hydrocarbons, polychlorinated biphenyls (PCBs), asbestos,
radon and urea formaldehyde foam insulation.

                           (2)  "Environmental   Requirements"  shall  mean  all
present and future Laws, orders, permits,  licenses,  approvals,  authorizations
and other requirements of any kind applicable to Hazardous Materials.

                           (3)  "Handled  by Tenant"  and  "Handling  by Tenant"
shall mean and refer to any installation,  handling,  generation,  storage, use,
disposal, discharge, release, abatement, removal,  transportation,  or any other
activity of any type by Tenant or its agents, employees, contractors, licensees,
assignees,    sublessees,    transferees   or   representatives   (collectively,
"Representatives")  or  its  guests,   customers,   or  invitees  (collectively,
"Visitors"),  at or about the Premises in connection with or involving Hazardous
Materials.

                           (4)  "Environmental  Losses" shall mean all costs and
expenses  of  any  kind,  damages,   including   foreseeable  and  unforeseeable
consequential  damages,  fines and  penalties  incurred in  connection  with any
violation of and compliance with  Environmental  Requirements  and all losses of
any kind attributable to the diminution of value, loss of use or adverse effects
on marketability or use of any portion of the Premises or Property.

                  (b)      Tenant's  Covenants.  No  Hazardous  Materials  shall
be Handled by Tenant at or about the  Premises  or Property  without  Landlord's
prior written consent, which consent may be granted, denied, or conditioned upon
compliance with Landlord's requirements,  all in Landlord's absolute discretion.
Notwithstanding  the foregoing,  normal  quantities  and use of those  Hazardous
Materials customarily used in the conduct of general office activities,  such as
copier fluids and cleaning supplies ("Permitted  Hazardous  Materials"),  may be
used and  stored at the  Premises  without  Landlord's  prior  written  consent,
provided that Tenant's  activities at or about the Premises and Property and the
Handling by Tenant of all Hazardous Materials shall comply at all times with all
Environmental  Requirements.  At the  expiration  or  termination  of the Lease,
Tenant shall  promptly  remove from the  Premises  and  Property  all  Hazardous
Materials  Handled by Tenant at the Premises or the Property.  Tenant shall keep
Landlord  fully and  promptly  informed of all  Handling by Tenant of  Hazardous
Materials other than Permitted Hazardous Materials.  Tenant shall be responsible
and liable for the compliance  with all of the provisions of this Section by all
of Tenant's  Representatives and Visitors, and all of Tenant's obligations under
this Section  (including its  indemnification  obligations  under  paragraph (e)
below) shall survive the expiration or termination of this Lease.

                  (c)      Compliance. Tenant shall at Tenant's expense promptly
take all actions  required by any  governmental  agency or entity in  connection
with or as a result of the Handling by Tenant of Hazardous Materials at or about
the Premises or Property,  including  inspection  and  testing,  performing  all
cleanup,  removal and remediation  work required with respect to those Hazardous
Materials,  complying with all closure requirements and post-closure monitoring,
and filing all  required  reports or plans.  All of the  foregoing  work and all
Handling by Tenant of all Hazardous Materials shall be performed in a good, safe
and workmanlike  manner by consultants  qualified and licensed to undertake such
work and in a manner  that  will not  interfere  with any other  tenant's  quiet
enjoyment of the Property or Landlord's use, operation,  leasing and sale of the
Property. Tenant shall deliver to Landlord prior to delivery to any governmental
agency,  or promptly after receipt from any such agency,  copies of all permits,
manifests,  closure or remedial action plans,  notices,  and all other documents
relating  to the  Handling  by Tenant  of  Hazardous  Materials  at or about the
Premises or  Property.  If any lien  attaches to the Premises or the Property in
connection with or as a result of the Handling by Tenant of Hazardous Materials,
and  Tenant  does not cause the same to be  released,  by  payment,  bonding  or
otherwise,  within twenty (20) days after the attachment thereof, Landlord shall
have the right but not the  obligation  to cause the same to be released and any
sums expended by Landlord (plus Landlord's  reasonable  administrative costs) in
connection therewith shall be payable by Tenant on demand.

                  (d)      Landlord's Rights.  Landlord shall have the right,
but not the  obligation,  to enter  the  Premises  at any  reasonable  time upon
twenty-four  (24) hours prior oral or written  notice (and without notice in the
event of an emergency) (i) to confirm Tenant's compliance with the provisions of
this Section 5.2, and (ii) to perform Tenant's obligations under this Section if
Tenant  has failed to do so after  reasonable  written  notice to Tenant.  After
reasonable written notice to Tenant Landlord shall also have the right to engage
qualified Hazardous Materials consultants to inspect the Premises and review the
Handling by Tenant of  Hazardous  Materials,  including  review of all  permits,
reports, plans, and other documents regarding same. Tenant shall pay to Landlord
on demand the reasonable  costs incurred by Landlord for (A)  consultants'  fees
and other  costs and  expenses in  performing  Tenant's  obligations  under this
Section,  and (B) inspection  costs incurred  based upon  Landlord's  reasonable
belief that Tenant is in  violation  of this  Section  5.2.  Landlord  shall use
reasonable efforts to minimize any interference with Tenant's business caused by
Landlord's  entry into the Premises,  but Landlord shall not be responsible  for
any interference caused thereby.

                  (e)      Tenant's Indemnification. Tenant agrees to indemnify,
defend,  protect and hold harmless  Landlord and its partners or members and its
or their partners, members,  directors,  officers,  shareholders,  employees and
agents from all  Environmental  Losses and all other  claims,  actions,  losses,
damages,  liabilities,  costs and expenses of every kind,  including  reasonable
attorneys',  experts' and consultants' fees and costs,  incurred at any time and
arising from or in connection with the Handling by Tenant of Hazardous Materials
at or about  the  Property  or  Tenant's  failure  to comply in full with all of
Tenant's obligations under this Lease concerning Environmental Requirements with
respect to the Premises.

                  (f)      Landlord's Responsibilities. Landlord shall  not  use
any of the Land or Building for any  activities  involving the use,  generation,
handling, release, threatened release, treatment,  storage, discharge,  disposal
or  transportation  of any  Hazardous  Materials,  except  in such  quantity  or
concentration  that is  customarily  used,  stored or disposed  in the  ordinary
course of the business so long as such activity  duly  complies with  applicable
Laws and good business  practice.  If Landlord  violates the foregoing  covenant
resulting in an Environmental Claim (as hereinafter defined) with respect to the
Premises,  then  Landlord  agrees to (a) notify Tenant  immediately  of any such
Environmental  Claim and (b) clean up any  contamination in full compliance with
all applicable  Laws.  "Environmental  Claim" means any claim,  demand,  action,
cause  of  action,  suit,  damage,  punitive  damage,  fine,  penalty,  expense,
liability, criminal liability,  judgment, or governmental investigation relating
to  remediation  or compliance  with  requirements  of Laws  covering  Hazardous
Materials . The term  "Environmental  Claim" also includes any costs incurred in
responding  to  efforts  to  require  remediation  and any claim  based upon any
asserted or actual breach or violation of any  requirements of any Laws covering
Hazardous Materials.

6.       TENANT IMPROVEMENTS & ALTERATIONS.

         6.1      Landlord and Tenant shall perform their respective obligations
with respect to design and  construction  of any  improvements to be constructed
and  installed in the Premises (the "Tenant  Improvements"),  as provided in the
Construction  Rider.  Except for any Tenant  Improvements  to be  constructed by
Tenant  as  provided  in the  Construction  Rider,  Tenant  shall  not  make any
alterations,  improvements or changes to the Premises, including installation of
any security system or telephone or data communication wiring,  ("Alterations"),
without   Landlord's  prior  written   consent,   which  consent  shall  not  be
unreasonably  withheld,  conditioned  or  delayed.   Notwithstanding  any  other
provision  contained  herein,  Tenant shall not be required to obtain Landlord's
prior consent for minor,  non-structural  Alterations that (a) do not affect any
of the Building Systems,  (b) are not visible from the exterior of the Premises,
and (c) cost less than Ten Thousand Dollars  ($10,000),  so long as Tenant gives
Landlord  notice of the  proposed  Alterations  at least ten (10) days  prior to
commencing  the  Alterations  and complies with all of the following  provisions
(except that Tenant shall not be required to obtain  Landlord's  approval of any
plans or  specifications  therefor).  Any such Alterations shall be completed by
Tenant at Tenant's sole cost and expense: (i) with due diligence,  in a good and
workmanlike  manner,  using new  materials;  (ii) in  compliance  with plans and
specifications  approved by Landlord;  (iii) in compliance with the construction
rules  and  regulations  promulgated  by  Landlord  from  time to time;  (iv) in
accordance with all applicable Laws (including all work,  whether  structural or
non-structural,  inside or outside the  Premises,  required to comply fully with
all applicable Laws and  necessitated by Tenant's work);  and (v) subject to all
conditions which Landlord may in Landlord's  discretion impose.  Such conditions
may include requirements for Tenant to: (i) provide payment or performance bonds
or additional insurance (from Tenant or Tenant's contractors,  subcontractors or
design  professionals);  (ii) use  contractors  or  subcontractors  approved  by
Landlord,  which approval  shall not be  unreasonably  withheld,  and use one of
three (3) contractors (having market rates) which are designated by Landlord for
Alterations  affecting the structure of the Building,  the Building  Systems and
the life safety  systems of the  Building;  and (iii)  remove all or part of the
Alterations  prior  to or  upon  expiration  or  termination  of  the  Term,  as
designated  in  writing  by  Landlord  at  the  time  Landlord  consents  to any
Alterations.  If any work outside the Premises,  or any work on or adjustment to
any of the Building  Systems,  is required in connection  with or as a result of
Tenant's work,  such work shall be performed at Tenant's  expense by contractors
designated  by  Landlord  who  charge for such work at rates  prevailing  in the
geographical  location of the Project..  Landlord's  right to review and approve
(or   withhold   approval   of)  Tenant's   plans,   drawings,   specifications,
contractor(s)  and other  aspects of  construction  work  proposed  by Tenant is
intended solely to protect Landlord,  the Property and Landlord's interests.  No
approval  or  consent  by  Landlord  shall  be  deemed  or  construed  to  be  a
representation or warranty by Landlord as to the adequacy, sufficiency,  fitness
or  suitability  thereof or  compliance  thereof with  applicable  Laws or other
requirements.   Except  as  otherwise  provided  in  Landlord's   consent,   all
Alterations  shall  upon  installation  become  part  of the  realty  and be the
property of Landlord.

         6.2      Before  making any Alterations for which Landlord's consent is
required pursuant to the provisions of Section 6.1 above, Tenant shall submit to
Landlord for  Landlord's  prior  approval  reasonably  detailed  final plans and
specifications  prepared  by a licensed  architect  or  engineer,  a copy of the
construction   contract,   including  the  name  of  the   contractor   and  all
subcontractors  proposed  by  Tenant to make the  Alterations  and a copy of the
contractor's  license.  Tenant  shall  reimburse  Landlord  upon  demand for any
reasonable expenses incurred by Landlord in connection with any Alterations made
by Tenant,  including  reasonable  fees  charged by  Landlord's  contractors  or
consultants to review plans and specifications  prepared by Tenant and to update
the existing  as-built plans and  specifications of the Buildings to reflect the
Alterations (not to exceed  $1,500.00 per each Alteration for updating  as-built
plans  and   specifications).   Tenant  shall  obtain  all  applicable  permits,
authorizations  and  governmental  approvals  and deliver  copies of the same to
Landlord before commencement of any Alterations.

         6.3      Tenant  shall keep the Premises and the Project free and clear
of  all  liens  arising  out of  any  work  performed,  materials  furnished  or
obligations incurred by Tenant. If any such lien attaches to the Premises or the
Project,  and Tenant does not cause the same to be released by payment,  bonding
or otherwise  within  twenty (20) days after the  attachment  thereof,  Landlord
shall have the right but not the  obligation  to cause the same to be  released,
and any sums expended by Landlord  (plus  Landlord's  reasonable  administrative
costs) in connection therewith shall be payable by Tenant on written demand with
interest  thereon from the date of  expenditure by Landlord at the Interest Rate
(as defined in Section 16.2 - Interest). Tenant shall give Landlord at least ten
(10) days' notice prior to the  commencement  of any  Alterations  and cooperate
with  Landlord  in posting  and  maintaining  notices of  non-responsibility  in
connection therewith.

         6.4      Subject  to the  provisions of Section 5 - Use and  Compliance
with Laws and the foregoing  provisions of this Section,  Tenant may install and
maintain  furnishings,  equipment,  movable  partitions,  business equipment and
other trade fixtures ("Trade Fixtures") in the Premises, provided that the Trade
Fixtures do not become an integral part of the Premises or the Building.  Tenant
shall promptly  repair any damage to the Premises or the Building  caused by any
installation or removal of such Trade Fixtures.

7.       MAINTENANCE AND REPAIRS.

         7.1      By  taking  possession of the Premises  Tenant agrees that the
Premises  are  then in a good  and  tenantable  condition.  Notwithstanding  the
foregoing,  prior to the  Commencement  Date Landlord  shall cause the following
systems (the "MEP Systems") to be inspected and placed in good working order and
repair:  (i)  electrical,  (ii)  plumbing,  and (iii) heating,  ventilating  and
air-conditioning.  If,  during the first  sixty  (60) days of the Term,  any MEP
System is not in the condition required by the foregoing sentence,  Tenant shall
notify  Landlord of the need for repair  within  sixty (60) days  following  the
Commencement  Date, and the repair shall be promptly be completed by Landlord at
no cost to Tenant. Landlord hereby assigns to Tenant all warranties with respect
to the Premises which would reduce Tenant's  maintenance  obligations  hereunder
and shall cooperate with Tenant to enforce all such warranties.  Tenant shall be
responsible  to clean,  maintain and repair the  Premises,  including  providing
janitorial  services  and disposal of trash;  and to that end,  during the Term,
Tenant,  at Tenant's  expense but under the direction of Landlord,  shall repair
and maintain the Premises,  including,  without  limitation,  any elevator,  the
heating,  ventilating  and  air  conditioning  system  or  systems  serving  the
Premises,  the electrical and plumbing  systems serving the Premises,  including
the lighting and plumbing fixtures, the restrooms serving the Premises, interior
stairways  in the  Premises,  the  interior  and  exterior  glass,  plate  glass
skylights,  interior walls,  floor coverings,  ceiling (ceiling tiles and grid),
Tenant Improvements,  Alterations, fire extinguishers, outlets and fixtures, and
any appliances (including dishwashers,  hot water heaters and garbage disposers)
in the Premises,  in a first class condition,  and keep the Premises in a clean,
safe and orderly condition.  With respect to the electrical and plumbing systems
serving the Premises, Tenant shall be responsible for the maintenance and repair
of any such  systems  only to the point where such  systems join a main or other
junction  (e.g.,  sewer main or  electrical  transformer)  serving more than one
user. On or before the  Commencement  Date Tenant shall provide  Landlord with a
copy of a service contract with a licensed commercial  Heating,  Ventilating and
Air-conditioning  maintenance  company  (which  contract  and  company  shall be
subject to Landlord's prior  reasonable  approval),  to maintain,  on an ongoing
basis (at least quarterly), the heating, ventilating and air-conditioning system
serving the Premises. In addition to the foregoing, Tenant acknowledges that the
sewer piping at the  Development  is made of ABS plastic.  Accordingly,  without
Landlord's  prior written  consent,  which consent may be granted or withheld in
Landlord's sole discretion,  Tenant shall allow only ordinary domestic sewage to
be placed in the sewer system from the Premises.  UNDER NO  CIRCUMSTANCES  SHALL
TENANT EVER PLACE, OR ALLOW TO BE PLACED,  ANY ESTERS OR KETONES  (USUALLY FOUND
IN SOLVENTS TO CLEAN UP PETROLEUM  PRODUCTS) IN THE DRAINS OR SEWER SYSTEM, FROM
THE PREMISES.

         7.2      Landlord  shall  (a)  maintain  or cause to be  maintained  in
reasonably  good order,  condition and repair,  the  structural  portions of the
roof, foundations, floors and exterior walls of the Building, and the public and
common  areas  outside of the  Building,  (b) wash the  exterior  windows of the
Building on a periodic  basis,  (c) caulk  exterior  window  joints and concrete
slabs and (d) paint the exterior of the Building, all of which shall be included
as a part of Operating Costs,  subject to the terms and conditions  contained in
Section 3.2 of this Lease.  Landlord shall be under no obligation to inspect the
Premises.  Tenant shall  promptly  report in writing to Landlord  any  defective
condition  known to Tenant which  Landlord is required to repair.  As a material
part of the consideration  for this Lease,  Tenant hereby waives any benefits of
any  applicable  existing or future Law,  including the provisions of California
Civil Code Sections 1932(1), 1941 and 1942, that allows a tenant to make repairs
at its landlord's expense.

         7.3      Landlord  hereby reserves the right, at any time and from time
to time,  without  liability to Tenant,  and without  constituting  an eviction,
constructive  or otherwise,  or entitling  Tenant to any abatement of rent or to
terminate  this  Lease  or  otherwise  releasing  Tenant  from  any of  Tenant's
obligations under this Lease:

                  (a) To make alterations,  additions,  repairs, improvements to
or in or to decrease the size of area of, all or any part of the  Building,  the
fixtures and equipment  therein,  and the Building Systems (except that Landlord
shall  not have  any  right  under  this  provision  to  reduce  the size of the
Premises, or to permanently,  materially and adversely affect Tenant's access to
and use of the  Premises,  except only as may be required to comply with Laws or
as a result of any fire or other casualty or Condemnation);

                  (b)      To change the Building's name or street address;

                  (c)      To install and  maintain any and all  signs  on  the
 exterior and interior of the Building;

                  (d) To reduce,  increase,  enclose or otherwise  change at any
time and from time to time the size, number, location, lay-out and nature of the
common areas  (including the Parking  Facility) and other tenancies and premises
in the Property and to create additional rentable areas through use or enclosure
of common areas; and

                  (e) If any governmental  authority  promulgates or revises any
Law or imposes mandatory or voluntary  controls or guidelines on Landlord or the
Property  relating  to the use or  conservation  of energy or  utilities  or the
reduction of automobile or other emissions or reduction or management of traffic
or  parking  on the  Property  (collectively  "Controls"),  to comply  with such
Controls,  whether  mandatory  or  voluntary,  or make  any  alterations  to the
Property related thereto.

8.       TENANT'S  TAXES.   "Tenant's   Taxes"   shall mean  (a   all   taxes,
assessments,  license fees and other governmental  charges or impositions levied
or  assessed  against or with  respect to  Tenant's  personal  property or Trade
Fixtures in the Premises, whether any such imposition is levied directly against
Tenant or levied against Landlord or the Property, (b) all rental, excise, sales
or transaction  privilege taxes arising out of this Lease  (excluding,  however,
state and federal  personal or corporate  income taxes measured by the income of
Landlord from all sources) imposed by any taxing authority upon Landlord or upon
Landlord's  receipt of any rent payable by Tenant  pursuant to the terms of this
Lease ("Rental Tax"), and (c) any increase in Taxes attributable to inclusion of
a value placed on Tenant's  personal  property,  Trade Fixtures or  Alterations.
Tenant  shall pay any Rental Tax to Landlord in addition to and at the same time
as Base Rent is payable under this Lease, and shall pay all other Tenant's Taxes
before  delinquency  (and,  at  Landlord's   request,   shall  furnish  Landlord
satisfactory  evidence thereof).  If Landlord pays Tenant's Taxes or any portion
thereof,  Tenant  shall  reimburse  Landlord  upon demand for the amount of such
payment, together with interest at the Interest Rate from the date of Landlord's
payment to the date of Tenant's reimbursement.

9.       UTILITIES .

         9.1      Payment for Utilities and Services.

                  (a) If the temperature  otherwise maintained in any portion of
the  Premises by the HVAC systems of the Building is affected as a result of any
lights,  machines or equipment used by Tenant in the Premises, then Tenant shall
be responsible,  at Tenant's sole cost and expense,  to install any machinery or
equipment   reasonably   necessary   to  restore  the   temperature,   including
modifications  to  the  standard  air-conditioning  equipment,  subject  to  the
provisions of Section 6.1 of this Lease.

                  (b)  Electricity,  water,  sanitary  sewer and any gas will be
separately  metered for the Premises.  Tenant shall pay prior to delinquency all
charges  for water,  gas,  electricity,  telephone  and other  telecommunication
services,  janitorial  service,  trash  pick-up,  sewer and all  other  services
consumed  on or  supplied  to the  Premises,  and all  taxes,  levies,  fees and
surcharges thereon.

         9.2      Interruption of Services.  In the event of an interruption in,
or failure or inability to provide electricity,  water, sanitary sewer or gas to
the Premises (a "Service  Failure"),  such Service Failure shall not, regardless
of its duration, constitute an eviction of Tenant, constructive or otherwise, or
impose upon Landlord any liability  whatsoever,  including,  but not limited to,
liability for consequential  damages or loss of business by Tenant or, except as
provided  herein,  entitle  Tenant to an abatement of rent or to terminate  this
Lease.

                  (a)  If any  Service  Failure  not  caused  by  Tenant  or its
Representatives  prevents Tenant from reasonably using a material portion of the
Premises and Tenant in fact ceases to use such portion of the  Premises,  Tenant
shall be entitled to an abatement of Base Rent and Additional  Rent with respect
to the portion of the Premises that Tenant is prevented  from using by reason of
such Service  Failure in the following  circumstances:  (i) if Landlord fails to
commence  reasonable  efforts  to remedy  the  Service  Failure  within ten (10)
Business Days following the occurrence of the Service Failure,  and such failure
has persisted and continuously prevented Tenant from using a material portion of
the Premises  during that period,  the  abatement of rent shall  commence on the
eleventh  (11th)  Business Day following the Service  Failure and continue until
Tenant is no longer so  prevented  from using such portion of the  Premises;  or
(ii) if the Service  Failure in all events is not  remedied  within  thirty (30)
days following the occurrence of the Service Failure and Tenant in fact does not
use such portion of the Premises for an uninterrupted period of thirty (30) days
or more by reason of such Service Failure,  the abatement of rent shall commence
no later  than the  thirty-first  (31st) day  following  the  occurrence  of the
Service  Failure and continue  until Tenant is no longer so prevented from using
such portion of the Premises.

                  (b)   If  a  Service  Failure  is  caused  by  Tenant  or  its
Representatives,  Landlord shall nonetheless remedy the Service Failure,  at the
expense of Tenant,  pursuant to Landlord's  maintenance  and repair  obligations
under Section 7 - "Maintenance and Repair" or Section 12.1 - "Landlord's Duty to
Repair," as the case may be, but Tenant shall not be entitled to an abatement of
rent or to terminate this Lease as a result of any such Service Failure.

                  (c)     Notwithstanding Tenant's entitlement to rent abatement
under the  preceding  provisions,Tenant  shall  continue  to pay  Tenant's  then
current  rent until such time as Landlord  and Tenant agree on the amount of the
rent abatement. If Landlord and Tenant are unable to agree on the amount of such
abatement  within ten (10) Business Days of the date they commence  negotiations
regarding  the  abatement,  then  either  party may submit the matter to binding
arbitration  pursuant to Sections 1280 et seq. of the  California  Code of Civil
Procedure.

                  (d)  In addition to the  foregoing  provisions,  if there is a
Service  Failure not caused by Tenant or its  Representatives  and such  Service
Failure  prevents  Tenant from  conducting  its  business in the Premises in the
manner in which Tenant intends to conduct such business,  and (i) Landlord fails
to commence  reasonable efforts to remedy the Service Failure within ninety (90)
days  following  the  occurrence  of the  Service  Failure,  or (ii) the Service
Failure  in all  events  is not  remedied  within  one (1)  year  following  its
occurrence  and Tenant in fact does not conduct any business in the Premises for
an uninterrupted  period of one (1) year or more, Tenant shall have the right to
terminate  this Lease by written  notice  delivered to Landlord  within ten (10)
Business Days following the event  described in clauses (i) or (ii) above giving
rise to the right to terminate.

                  (e) Where the cause of a Service Failure is within the control
of a public utility or other public or  quasi-public  entity outside  Landlord's
control,  notification  to such  utility or entity of the  Service  Failure  and
request to remedy the failure shall constitute  "reasonable efforts" by Landlord
to remedy the Service Failure.

                  (f)   Tenant hereby waives the provisions of California Civil
Code Section 1932(1) or any other applicable  existing or future law,  ordinance
or governmental  regulation permitting the termination of this Lease due to such
interruption, failure or inability.

10.      EXCULPATION AND INDEMNIFICATION.

         10.1     Landlord's   Indemnification   of   Tenant.   Landlord   shall
indemnify, protect, defend and hold Tenant harmless from and against any claims,
actions,   liabilities,   damages,  costs  or  expenses,   including  reasonable
attorneys'  fees and costs  incurred in  defending  against the same  ("Claims")
asserted by any third party against  Tenant for loss,  injury or damage,  to the
extent  such  loss,  injury or damage is  caused by the  willful  misconduct  or
negligent acts or omissions of Landlord or its authorized representatives.

         10.2     Tenant's  Indemnification of Landlord. Tenant shall indemnify,
protect,  defend and hold  Landlord and  Landlord's  authorized  representatives
harmless  from and against  Claims  arising  from (a) the acts or  omissions  of
Tenant or Tenant's  Representatives or Visitors in or about the Property, or (b)
any  construction or other work undertaken by Tenant on the Premises  (including
any design defects), or (c) any breach or default under this Lease by Tenant, or
(d) any loss,  injury or damage,  howsoever  and by  whomsoever  caused,  to any
person or property,  occurring in the Premises  during the Term,  excepting only
Claims described in this clause (d) to the extent they are caused by the willful
misconduct  or  negligent  acts  or  omissions  of  Landlord  or its  authorized
representatives.

         10.3     Damage to Tenant and Tenant's Property.  Landlord shall not be
liable to Tenant for any loss,  injury or other  damage to Tenant or to Tenant's
property in or about the  Premises  or the  Property  from any cause  (including
defects in the Property or in any equipment in the Property;  fire, explosion or
other casualty;  bursting, rupture, leakage or overflow of any plumbing or other
pipes or lines, sprinklers,  tanks, drains, drinking fountains or washstands in,
above,  or about the Premises or the  Property;  or acts of other tenants in the
Property).  Tenant hereby waives all claims against  Landlord for any such loss,
injury or damage and the cost and expense of defending  against claims  relating
thereto,  including any loss,  injury or damage caused by Landlord's  negligence
(active or passive) or willful  misconduct.  Notwithstanding any other provision
of this Lease to the contrary, in no event shall Landlord or Tenant be liable to
the other party for any punitive or consequential damages or damages for loss of
business by Tenant or Landlord  except for any liability which Tenant might have
for holding over in the Premises beyond the expiration of the Term in accordance
with the provisions of Section 19.2 of this Lease.

         10.4  Survival.  The  obligations  of the parties under this Section 10
shall survive the expiration or termination of this Lease.

11.      INSURANCE.

         11.1     Tenant's Insurance.

                  (a)      Liability Insurance.  Tenant shall maintain in full
force  throughout the  Term,commercial  general  liability  insurance  providing
coverage  on an  occurrence  form basis with limits of not less than Two Million
Dollars  ($2,000,000.00)  each  occurrence for bodily injury and property damage
combined, Two Million Dollars ($2,000,000.00) annual general aggregate,  and Two
Million  Dollars  ($2,000,000.00)   products  and  completed  operations  annual
aggregate.  Tenant's  liability  insurance policy or policies shall: (i) include
premises and operations  liability coverage,  products and completed  operations
liability  coverage,  broad form property  damage coverage  including  completed
operations,  blanket contractual  liability coverage  including,  to the maximum
extent possible,  coverage for the  indemnification  obligations of Tenant under
this Lease, and personal and advertising injury coverage;  (ii) provide that the
insurance  company has the duty to defend all insureds  under the policy;  (iii)
provide that defense costs are paid in addition to and do not deplete any of the
policy limits;  (iv) cover liabilities  arising out of or incurred in connection
with  Tenant's  use or occupancy  of the  Premises or the  Property;  (v) extend
coverage to cover  liability  for the actions of  Tenant's  Representatives  and
Visitors;  and (vi) designate  separate limits for the Property.  Each policy of
liability  insurance  required  by  this  Section  shall:  (i)  contain  a cross
liability  endorsement or separation of insureds  clause;  (ii) provide that any
waiver of subrogation  rights or release prior to a loss does not void coverage;
(iii)  provide that it is primary to and not  contributing  with,  any policy of
insurance  carried by Landlord  covering  the same loss;  (iv)  provide that any
failure  to comply  with the  reporting  provisions  shall not  affect  coverage
provided to Landlord,  its partners,  property managers and Mortgagees;  and (v)
name Landlord,  its partners, the Property Manager identified in the Basic Lease
Information  (the  "Property  Manager"),  and such other  parties in interest as
Landlord may from time to time  reasonably  designate  to Tenant in writing,  as
additional  insureds.  Such  additional  insureds shall be provided at least the
same  extent of  coverage as is  provided  to Tenant  under such  policies.  All
endorsements effecting such additional insured status shall be at least as broad
as additional insured  endorsement form number CG 20 11 11 85 promulgated by the
Insurance Services Office.

                  (b)      Property  Insurance.  Tenant  shall  at  all  times
maintain in effect with  respect to Tenant  Improvements,  any  Alterations  and
Tenant's Trade Fixtures and personal  property,  commercial  property  insurance
providing coverage, on an "all risk" or "special form" basis, in an amount equal
to at least 90% of the full replacement cost of the covered property. Tenant may
carry such insurance under a blanket policy,  provided that such policy provides
coverage equivalent to a separate policy. During the Term, the proceeds from any
such policies of insurance  shall be used for the repair or  replacement  of the
Tenant  Improvements,  Alterations,  Trade  Fixtures  and  personal  property so
insured.  Landlord shall be provided coverage under such insurance to the extent
of its  insurable  interest  and, if requested by  Landlord,  both  Landlord and
Tenant shall sign all  documents  reasonably  necessary or proper in  connection
with the  settlement  of any claim or loss under such  insurance.  Landlord will
have no obligation to carry insurance on any Tenant Improvements, Alterations or
on Tenant's Trade Fixtures or personal property.

                  (c)      Requirements For   All Policies.  Each  policy  of
insurance  required under this Section 11.1 shall: (i) be in a form, and written
by an insurer, reasonably acceptable to Landlord, (ii) be maintained at Tenant's
sole cost and  expense,  and (iii)  require at least  thirty (30) days'  written
notice to Landlord  prior to any  cancellation,  nonrenewal or  modification  of
insurance coverage.  Insurance companies issuing such policies shall have rating
classifications of "A" or better and financial size category ratings of "VII" or
better  according to the latest  edition of the A.M. Best Key Rating Guide.  All
insurance companies issuing such policies shall be admitted carriers licensed to
do business in the state where the Property is located.  Any  deductible  amount
under such  insurance  shall not exceed  $5,000,  except that the deductible for
Tenant's  Products/Completed  Operations  coverage may provided for a deductible
not to exceed $10,000. Tenant shall provide to Landlord, upon request,  evidence
that the  insurance  required to be carried by Tenant  pursuant to this Section,
including any endorsement  effecting the additional  insured status,  is in full
force and effect and that premiums therefor have been paid.

                  (d)      Updating Coverage.  Tenant shall increase the amounts
of insurance as required by any Mortgagee,  and, not more  frequently  than once
every three (3) years, as recommended by Landlord's insurance broker, if, in the
reasonable  opinion of either of them,  the amount of  insurance  then  required
under  this  Lease is not  adequate.  Any  limits set forth in this Lease on the
amount or type of coverage  required by Tenant's  insurance  shall not limit the
liability of Tenant under this Lease.

         (e)      Certificates of Insurance. Prior to occupancy of the Premises
by Tenant,  and not less than thirty (30) days prior to expiration of any policy
thereafter,  Tenant  shall  furnish  to  Landlord  a  certificate  of  insurance
reflecting that the insurance required by this Section is in force,  accompanied
by an  endorsement  showing the required  additional  insureds  satisfactory  to
Landlord  in  substance  and  form.  Notwithstanding  the  requirements  of this
paragraph,  Tenant shall at Landlord's  request  provide to Landlord a certified
copy of each  insurance  policy  required to be in force at any time pursuant to
the requirements of this Lease or its Exhibits.

         11.2     Landlord's  Insurance.  During the Term,  to the  extent  such
coverages  are  available at a  commercially  reasonable  cost,  Landlord  shall
maintain in effect  insurance on the Building with responsible  insurers,  on an
"all risk" or "special  form" basis,  insuring the  Building  (excluding  Tenant
Improvements)  in an  amount  equal  to at  least  90% of the  replacement  cost
thereof,  excluding land, foundations,  footings and underground  installations.
Landlord may, but shall not be obligated to, carry insurance against  additional
perils  and/or  in  greater  amounts.  Landlord  shall  maintain  in full  force
throughout the Term,  commercial general liability  insurance providing coverage
with limits of not less than Two Million Dollars ($2,000,000.00) each occurrence
for bodily injury and property damage  combined  covering the Property (the cost
of the premiums for which shall be included in Operating Costs).

         11.3     Mutual  Waiver of Right of  Recovery & Waiver of  Subrogation.
Landlord and Tenant each hereby  waive any right of recovery  against each other
and the  partners,  managers,  members,  shareholders,  officers,  directors and
authorized  representatives of each other for any loss or damage that is covered
by any policy of property  insurance  maintained by either party (or required by
this Lease to be maintained) with respect to the Premises or the Property or any
operation therein, regardless of cause, including negligence (active or passive)
of the  party  benefiting  from the  waiver.  If any such  policy  of  insurance
relating to this Lease or to the  Premises or the  Property  does not permit the
foregoing  waiver or if the coverage  under any such policy would be invalidated
as a result of such waiver,  the party maintaining such policy shall obtain from
the  insurer  under  such  policy a waiver  of all right of  recovery  by way of
subrogation  against either party in connection  with any claim,  loss or damage
covered by such policy.

12.      DAMAGE OR DESTRUCTION.

         12.1     Landlord's Duty to Repair.

                  (a) If all or a part of the Premises are rendered untenantable
or  inaccessible by damage to all or any part of the Property from fire or other
casualty  then,  unless either party is entitled to and elects to terminate this
Lease  pursuant to Sections  12.2 -  Landlord's  Right to  Terminate  and 12.3 -
Tenant's  Right to Terminate,  Landlord  shall,  at its expense,  use reasonable
efforts to repair and restore the Premises and/or the Property,  as the case may
be, to  substantially  their former  condition  to the extent  permitted by then
applicable  Laws;  provided,  however,  that in no event shall Landlord have any
obligation  for repair or  restoration  beyond the extent of insurance  proceeds
received by Landlord for such repair or restoration,  or for Tenant Improvements
or for any of Tenant's personal property, Trade Fixtures or Alterations.

                  (b)  If Landlord is required or elects to repair damage to the
Premises and/or the Property,  this Lease shall continue in effect, but Tenant's
Base Rent and Additional  Rent shall be abated with regard to any portion of the
Premises  that  Tenant is  prevented  from using by reason of such damage or its
repair from the date of the casualty until substantial  completion of Landlord's
repair of the affected  portion of the Premises as required under this Lease. In
no event  shall  Landlord  be liable  to  Tenant  by reason of any  injury to or
interference  with  Tenant's  business  or property  arising  from fire or other
casualty or by reason of any repairs to any part of the Property necessitated by
such casualty.

         12.2     Landlord's Right to Terminate. Landlord may elect to terminate
this  Lease  following  damage by fire or other  casualty  under  the  following
circumstances:

                  (a)      If, in the reasonable judgment of Landlord, the
Premises  and  the  Property  (exclusive  of  Tenant   Improvements)  cannot  be
substantially  repaired and restored under  applicable  Laws within one (1) year
from the date of the casualty;

                  (b)      If, in the reasonable judgment of Landlord, adequate
proceeds are not, for any reason,  made  available to Landlord  from  Landlord's
insurance  policies  (and/or  from  Landlord's  funds  made  available  for such
purpose, at Landlord's sole option) to make the required repairs;

                  (c)      If the Building is  damaged or destroyed  to the
extent that,  in the  reasonable  judgment of  Landlord,  the cost to repair and
restore the Building  would exceed fifty percent  (50%) of the full  replacement
cost of the  Building  (exclusive  of Tenant  Improvements),  whether or not the
Premises are at all damaged or destroyed; or

                  (d)      If the fire or other casualty occurs during the last
year of the Term, and the repairs and  restoration  would either (i) take longer
than sixty (60) days to complete,  or (ii) would not be completed at least sixty
(60) days prior to the  expiration  of the Term (and in either  case the Term of
the Lease  has not been  extended  by Tenant  exercising  the  Extension  Option
contained in Section 39 of the Lease).

If any of the circumstances  described in subparagraphs  (a), (b), (c) or (d) of
this Section 12.2 occur or arise,  Landlord  shall give Tenant notice within one
hundred and twenty (120) days after the date of the casualty, specifying whether
Landlord  elects  to  terminate  this  Lease  as  provided  above  and,  if not,
Landlord's   estimate  of  the  time  required  to  complete  Landlord's  repair
obligations under this Lease.

         12.3     Tenant's  Right to  Terminate.  If the  Premises  are rendered
untenantable  or  inaccessible by damage to all or any part of the Property from
fire or other  casualty,  and  Landlord  does not elect to terminate as provided
above,  then Tenant may elect to terminate this Lease if Landlord's  estimate of
the time required to complete  Landlord's repair obligations under this Lease is
greater than one (1) year,  in which event  Tenant may elect to  terminate  this
Lease by giving Landlord notice of such election to terminate within thirty (30)
days after  Landlord's  notice to Tenant  pursuant to Section  12.2 - Landlord's
Right to Terminate.

         12.4     Waiver.  Landlord and Tenant each hereby waive the  provisions
of California  Civil Code  Sections  1932(2),  1933(4) and any other  applicable
existing or future Law  permitting the  termination of a lease  agreement in the
event of damage or destruction under any circumstances other than as provided in
Sections 12.2 -Landlord's Right to Terminate and 12.3 - Tenant's Right to
Terminate.

13.      CONDEMNATION.

         13.1     Definitions.

                   (a) "Award" shall mean all compensation, sums,or anything
of value awarded, paid or received on a total or partial Condemnation.

                  (b)  "Condemnation"  shall mean (i) a  permanent  taking (or a
temporary  taking for a period extending beyond the end of the Term) pursuant to
the  exercise of the power of  condemnation  or eminent  domain by any public or
quasi-public  authority,  private  corporation  or individual  having such power
("Condemnor"),  whether by legal  proceedings or otherwise,  or (ii) a voluntary
sale or  transfer  by Landlord to any such  authority,  either  under  threat of
condemnation or while legal proceedings for condemnation are pending.

                  (c)      "Date of Condemnation" shall mean the earlier of the
date that title to the property taken is vested in the Condemnor or the date the
Condemnor has the right to possession of the property being condemned.

         13.2     Effect on Lease.

                  (a)      If the Premises are totally taken by Condemnation,
this Lease shall terminate as of the Date of Condemnation.  If a portion but not
all of the Premises is taken by Condemnation, this Lease shall remain in effect;
provided,  however,  that if the  portion of the  Premises  remaining  after the
Condemnation will be unsuitable for Tenant's  continued use, then upon notice to
Landlord  within  thirty  (30)  days  after  Landlord  notifies  Tenant  of  the
Condemnation,  Tenant  may  terminate  this  Lease  effective  as of the Date of
Condemnation.
                  (b) If twenty-five  percent (25%) or more of the Project or of
the  parcel(s)  of land on which the  Building  is  situated  or of the  Parking
Facility or of the floor area in the Building is taken by Condemnation, or if as
a result of any Condemnation the Building is no longer  reasonably  suitable for
use as an office building,  whether or not any portion of the Premises is taken,
Landlord  may  elect  to  terminate  this  Lease,  effective  as of the  Date of
Condemnation,  by notice to Tenant  within  thirty  (30) days  after the Date of
Condemnation.

                  (c)      If all or a substantial portion of the Premises is
temporarily taken by a Condemnor for a period not extending beyond the lesser of
(i) one (1) year after the temporary  taking,  or (ii) the end of the Term, this
Lease shall remain in full force and effect.

         13.3     Restoration.  If this Lease is not  terminated  as provided in
Section  13.2 - Effect on Lease,  Landlord,  at its  expense,  shall  diligently
proceed to repair and restore the Premises to substantially its former condition
(to the extent  permitted by then applicable Laws) and/or repair and restore the
Building to an architecturally complete office building; provided, however, that
Landlord's  obligations  to so repair and restore shall be limited to the amount
of any Award  received by Landlord and not required to be paid to any  Mortgagee
(as  defined  in  Section  20.2  below).  In no event  shall  Landlord  have any
obligation  to repair or replace any  improvements  in the  Premises  beyond the
amount of any Award received by Landlord for such repair or to repair or replace
any of Tenant's personal property, Trade Fixtures, or Alterations.

         13.4     Abatement  and  Reduction  of  Rent.  If  any  portion  of the
Premises is taken in a Condemnation or is rendered  permanently  untenantable by
repairs necessitated by the Condemnation,  and this Lease is not terminated, the
Base Rent and Additional  Rent payable under this Lease shall be  proportionally
reduced as of the Date of  Condemnation  based upon the  percentage  of rentable
square feet in the Premises so taken or rendered  permanently  untenantable.  In
addition,  if this Lease remains in effect following a Condemnation and Landlord
proceeds to repair and restore the Premises,  the Base Rent and Additional  Rent
payable  under this Lease  shall be abated  during the period of such  repair or
restoration to the extent such repairs prevent Tenant's use of the Premises.

         13.5     Awards.  Any Award made shall be paid to Landlord,  and Tenant
hereby  assigns to  Landlord,  and waives all  interest in or claim to, any such
Award,  including  any  claim  for the value of the  unexpired  Term;  provided,
however,  that Tenant  shall be entitled to receive,  or to prosecute a separate
claim for, an Award for a temporary  taking of the Premises or a portion thereof
by a  Condemnor  where this Lease is not  terminated  (to the extent  such Award
relates  to the  unexpired  Term),  or an Award or  portion  thereof  separately
designated for relocation  expenses or the interruption of or damage to Tenant's
business or as compensation for Tenant's  personal  property,  Trade Fixtures or
Alterations and moving costs.

         13.6     Waiver.  Landlord and Tenant each hereby waive the  provisions
of California Code of Civil Procedure  Section 1265.130 and any other applicable
existing or future Law allowing  either party to petition for a  termination  of
this Lease upon a partial taking of the Premises and/or the Property.

14.      ASSIGNMENT AND SUBLETTING.

         14.1     Landlord's  Consent  Required.  Tenant  shall not assign  this
Lease or any  interest  therein,  or sublet  or  license  or  permit  the use or
occupancy  of the  Premises or any part  thereof by or for the benefit of anyone
other than Tenant,  or in any other manner  transfer all or any part of Tenant's
interest under this Lease (each and all a "Transfer"), without the prior written
consent of Landlord,  which  consent  (subject to the other  provisions  of this
Section 14) shall not be  unreasonably  withheld.  Subject to the  provisions of
Section  14.9 of this  Lease,  if Tenant is a  business  entity,  any  direct or
indirect  transfer of fifty percent  (50%) or more of the ownership  interest of
the entity  (whether in a single  transaction  or in the aggregate  through more
than one transaction) shall be deemed a Transfer.  Notwithstanding any provision
in this Lease to the contrary, Tenant shall not mortgage, pledge, hypothecate or
otherwise encumber this Lease or all or any part of Tenant's interest under this
Lease.

         14.2     Reasonable Consent.

                  (a)  Prior to any  proposed  Transfer,  Tenant shall submit in
writing to Landlord (i) the name and legal composition of the proposed assignee,
subtenant,  user or other  transferee (each a "Proposed  Transferee");  (ii) the
nature of the  business  proposed  to be  carried  on in the  Premises;  (iii) a
current balance sheet,  income  statements for the last two years and such other
reasonable financial and other information concerning the Proposed Transferee as
Landlord may request;  and (iv) a copy of the proposed  assignment,  sublease or
other agreement  governing the proposed  Transfer.  Within fifteen (15) Business
Days after Landlord receives all such information it shall notify Tenant whether
it  approves  or  disapproves  such  Transfer  or if it elects to proceed  under
Section 14.7 - Landlord's Right to Space.

                  (b)   Tenant   acknowledges   and  agrees  that,  among  other
circumstances for which Landlord could reasonably withhold consent to a proposed
Transfer,  it shall be reasonable for Landlord to withhold consent where (i) the
Proposed  Transferee  does not intend itself to occupy the entire portion of the
Premises  assigned  or  sublet,  (ii)  Landlord  reasonably  disapproves  of the
Proposed  Transferee's  business  operating  ability or history,  reputation  or
creditworthiness  or the nature or  character of the business to be conducted by
the Proposed  Transferee  at the  Premises,  (iii) the Proposed  Transferee is a
governmental agency or unit or an existing tenant in the Project, unless, in the
case of a Proposed  Transferee,  Landlord  does not have space  available in the
Project that Landlord is willing to lease to the Proposed Transferee  containing
the same or more square feet than the space contained in the Premises,  (iv) the
proposed  Transfer  would violate any  "exclusive"  rights of any tenants in the
Project,  (v) Landlord or Landlord's agent has shown space in the Project to the
Proposed  Transferee or responded to any inquiries from the Proposed  Transferee
or the  Proposed  Transferee's  agent  concerning  availability  of space in the
Project,  at any  time  within  the  preceding  nine  months,  or (vi)  Landlord
otherwise  determines  that the  proposed  Transfer  would  have the  effect  of
decreasing the value of the Project or increasing the expenses  associated  with
operating,  maintaining  and  repairing  the  Project.  In no event  may  Tenant
publicly advertise all or any portion of the Premises for assignment or sublease
at a  rental  less  than  that  then  sought  by  Landlord  for a  direct  lease
(non-sublease)  of  comparable  space  in  the  Project.   Notwithstanding   the
foregoing,  Tenant may employ a broker who  advertises on a commercial  multiple
listing service in order to offer the Premises for assignment or sublease.

         14.3     Excess  Consideration.  If Landlord  consents to the Transfer,
Landlord  shall be  entitled  to receive as  Additional  Rent  hereunder,  fifty
percent (50%) of all "Sublease Profits" (as defined below).  Notwithstanding the
foregoing,  during  the  thirty-six  (36) full  calendar  months  following  the
Commencement  Date of this Lease  Landlord shall not be entitled to any Sublease
Profits for any sublease  between  Tenant and any  subtenant or  subtenants  for
Building 26, provided,  however,  commencing in the  thirty-seventh  (37th) full
calendar  month  following the  Commencement  Date of this Lease  Landlord shall
receive  fifty  percent  (50%) of  Sublease  Profits  from any such  sublease or
subleases at Building 26 (even if any such  sublease is for a term which is both
prior to, and  subsequent  to, the first day of the  thirty-seventh  [37th] full
calendar  month  following  the  Commencement  Date  of this  Lease).  "Sublease
Profits" shall mean any consideration  paid by the Transferee for the assignment
or sublease  and,  in the case of a  sublease,  the excess of the rent and other
consideration  payable  by the  subtenant  over  the  amount  of Base  Rent  and
Additional Rent payable  hereunder  applicable to the subleased space,  less any
and all direct, out-of-pocket expenses and cash concessions, including costs for
necessary  Alterations and brokerage  commission,  paid by Tenant to procure the
assignee or subtenant.  Tenant shall pay to Landlord as additional rent,  within
ten (10) days after receipt by Tenant, any such excess consideration paid by any
transferee (the "Transferee") for the Transfer provided any capital expenditures
and brokerage  commissions  in connection  with any sublease  shall be amortized
over the term of the sublease.

         14.4     No  Release Of Tenant.  No consent by Landlord to any Transfer
shall  relieve  Tenant of any  obligation  to be  performed by Tenant under this
Lease, whether occurring before or after such consent, assignment, subletting or
other  Transfer.  Each  Transferee  shall be jointly and  severally  liable with
Tenant (and Tenant shall be jointly and severally  liable with each  Transferee)
for the payment of rent (or,  in the case of a sublease,  rent in the amount set
forth in the sublease) and for the performance of all other terms and provisions
of this Lease.  The consent by Landlord to any Transfer shall not relieve Tenant
or any such  Transferee from the obligation to obtain  Landlord's  express prior
written  consent to any  subsequent  Transfer by Tenant or any  Transferee.  The
acceptance of rent by Landlord from any other person (whether or not such person
is an occupant of the  Premises)  shall not be deemed to be a waiver by Landlord
of any provision of this Lease or to be a consent to any Transfer.

         14.5     Expenses  and Attorneys' Fees. Tenant shall pay to Landlord on
demand all costs and expenses (including reasonable attorneys' fees) incurred by
Landlord in connection  with  reviewing or  consenting to any proposed  Transfer
(including  any request for  consent to, or any waiver of  Landlord's  rights in
connection  with,  any  security  interest  in any of  Tenant's  property at the
Premises).

         14.6     Effectiveness  of  Transfer.  Prior to the  date on which  any
permitted  Transfer  (whether  or  not  requiring  Landlord's  consent)  becomes
effective,  Tenant shall deliver to Landlord a counterpart of the fully executed
Transfer  document and  Landlord's  standard  form of Consent to  Assignment  or
Consent  to  Sublease  executed  by Tenant and the  Transferee  in which each of
Tenant and the  Transferee  confirms  its  obligations  pursuant  to this Lease.
Failure or refusal of a  Transferee  to execute  any such  instrument  shall not
release or discharge  the  Transferee  from  liability as provided  herein.  The
voluntary,  involuntary or other surrender of this Lease by Tenant,  or a mutual
cancellation  by  Landlord  and  Tenant,  shall not work a merger,  and any such
surrender or cancellation shall, at the option of Landlord, either terminate all
or any existing  subleases or operate as an assignment to Landlord of any or all
of such subleases.

         14.7     Landlord's  Right to Space.  Notwithstanding  any of the above
provisions of this Section to the contrary,  if Tenant notifies Landlord that it
desires  to enter  into a  Transfer,  Landlord,  in lieu of  consenting  to such
Transfer, may elect (x) in the case of an assignment or a sublease of the entire
Premises, to terminate this Lease, or (y) in the case of a sublease of less than
the entire Premises, to terminate this Lease as it relates to the space proposed
to be subleased  by Tenant;  provided,  however,  Tenant shall have the right to
negate Landlord's termination pursuant to the provisions of this Section 14.7 by
giving Landlord  written notice of such negation  ("Tenant's  Negation  Notice")
within three (3) Business Days after Tenant receives  Landlord's notice electing
to terminate in lieu of consenting to a Transfer. Upon Tenant's Negation Notice,
Tenant shall be deemed to have withdrawn  Tenant's  request for a Transfer,  the
Lease shall not be  terminated  with respect to the proposed  Transfer,  and the
proposed  Transferee  shall have no right in and to the portion of the  Premises
which was included in the proposed Transfer.  Upon any such termination pursuant
to the provisions of this Section 14.7,  this Lease will terminate (or the space
proposed to be subleased will be removed from the Premises subject to this Lease
and the Base Rent and Tenant's  Share under this Lease shall be  proportionately
reduced) on the date the Transfer was proposed to be effective, and Landlord may
lease such space to any party,  including the prospective  Transferee identified
by Tenant.  Notwithstanding the provisions of this Section 14.7 to the contrary,
Landlord  recognizes and agrees that upon or after the Commencement Date of this
Lease Tenant intends to sublease  Building 26, containing  approximately  19,475
square feet of rentable area, to another entity.  Subject to Landlord's approval
rights over the  proposed  sublease,  as provided in Section 14.1 of this Lease,
Landlord  agrees that Landlord  shall not have the right to terminate this Lease
with respect to the first  sublease  entered into by Tenant with another  entity
for Building 26.

         14.8     Assignment  of Sublease  Rents.  Tenant hereby  absolutely and
irrevocably  assigns to  Landlord  any and all rights to receive  rent and other
consideration  from any  sublease  and agrees that  Landlord,  as assignee or as
attorney-in-fact  for  Tenant for  purposes  hereof,  or a  receiver  for Tenant
appointed on Landlord's  application may (but shall not be obligated to) collect
such  rents  and  other   consideration  and  apply  the  same  toward  Tenant's
obligations  to Landlord  under this Lease;  provided,  however,  that  Landlord
grants to Tenant at all times  prior to  occurrence  of any breach or default by
Tenant  a  revocable   license  to  collect  such  rents  (which  license  shall
automatically  and  without  notice be and be deemed  to have been  revoked  and
terminated immediately upon any Event of Default).

          14.9    Transfer  to    Affiliate    Notwithstanding  any   provision
contained  in the  Section  14 to the  contrary,  Tenant  shall  have the right,
without  the consent of  Landlord,  upon ten (10) days prior  written  notice to
Landlord,  to transfer Tenant's interest in this Lease to either (i) a successor
corporation  related  to  Tenant by  merger,  consolidation,  or  non-bankruptcy
reorganization,  (ii) a purchaser of at least ninety  percent  (90%) of Tenant's
assets located at the Premises as an ongoing concern, or (iii) an "Affiliate" of
Tenant,  and the provisions of Sections 14.2, 14.3 and 14.7 shall not apply with
respect to the  transfer to the  Affiliate,  but the  transfer to the  Affiliate
shall be subject to all other terms and conditions of this Lease,  including the
provisions  of this Section  14.9.  Tenant shall remain  liable under this Lease
after  any  such  transfer.  For the  purposes  of this  Article  14,  the  term
"Affiliate" of Tenant shall mean and refer to any entity controlling, controlled
by or under common control with Tenant or Tenant's  parent,  as the case may be.
"Control" as used herein shall mean the possession,  direct or indirect,  of the
power to direct or cause the  direction of the  management  and policies of such
controlled entity; and the ownership, or possession of the right to vote, in the
ordinary direction of its affairs, of at least fifty percent (50%) of the voting
interest  in any  entity.  Notwithstanding  Tenant's  right  to  Transfer  to an
Affiliate  pursuant to the  provisions  of this  Section  14.9,  Tenant may not,
through  use of its  rights  under this  Article 14 in two or more  transactions
(whether separate  transactions or steps or phases of a single transaction),  at
one time or over time, whether by first assigning this Lease to a subsidiary and
then  merging the  subsidiary  into  another  entity or selling the stock of the
subsidiary  or by other  means,  assign or sublease  the  Premises,  or transfer
control of Tenant, to any person or entity which is not a subsidiary,  affiliate
or controlling corporation of the original Tenant, as then constituted, existing
prior  to  the  commencement  of  such  transactions,  without  first  obtaining
Landlord's prior written consent pursuant to the provisions of Section 14.2. For
purposes of this  Lease,  a sale of Tenant's  capital  stock  through any public
exchange shall not be deemed an assignment, subletting or other transfer of this
Lease or the Premises requiring Landlord's consent.

15.      DEFAULT AND REMEDIES.

         15.1     Events of Default.  The occurrence of any of the following
shall constitute an "Event of Default" by Tenant:

                  (a)      Tenant fails to make any payment of rent when due, or
any amount  required to replenish the security  deposit as provided in Section 4
above,  if payment in full is not  received  by Landlord  within  three (3) days
after written notice that it is due.

                  (b)      Tenant abandons the Premises and fails to make any
payment of rent when due.

                  (c) Tenant fails timely to deliver any subordination document,
estoppel  certificate or financial  statement  requested by Landlord  within the
applicable time period specified in Sections 20 Encumbrances - and 21 - Estoppel
Certificates and Financial Statements - below.

                   (d) Tenant violates the restrictions on Transferset forth
in Section 14 - Assignment and Subletting.

                  (e) Tenant ceases doing business as a going concern;  makes an
assignment for the benefit of creditors;  is  adjudicated an insolvent,  files a
petition (or files an answer  admitting the material  allegations of a petition)
seeking relief under any under any state or federal bankruptcy or other statute,
law or regulation  affecting  creditors'  rights;  all or  substantially  all of
Tenant's  assets are  subject to  judicial  seizure  or  attachment  and are not
released  within 60 days, or Tenant consents to or acquiesces in the appointment
of a trustee,  receiver or liquidator  for Tenant or for all or any  substantial
part of Tenant's assets.

                  (f)   Tenant   fails,   within  ninety  (90)  days  after  the
commencement of any proceedings against Tenant seeking relief under any state or
federal  bankruptcy or other  statute,  law or regulation  affecting  creditors'
rights, to have such proceedings dismissed,  or Tenant fails, within ninety (90)
days after an appointment,  without  Tenant's  consent or  acquiescence,  of any
trustee, receiver or liquidator for Tenant or for all or any substantial part of
Tenant's assets, to have such appointment vacated.

                  (g)  Tenant  fails to perform or comply with any  provision of
this Lease other than those  described  in (a)  through (f) above,  and does not
fully cure such  failure  within  thirty (30) days after notice to Tenant or, if
such failure cannot be cured within such thirty  (30)-day  period,  Tenant fails
within  such thirty  (30)-day  period to  commence,  and  thereafter  diligently
proceed with,  all actions  necessary to cure such failure as soon as reasonably
possible but in all events within one hundred  twenty (120) days of such notice;
provided, however, that if Landlord in Landlord's reasonable judgment determines
that such failure  cannot or will not be cured by Tenant within such one hundred
twenty  (120)  days,  then such  failure  shall  constitute  an Event of Default
immediately upon such notice to Tenant.

         15.2     Remedies. Upon the occurrence of an Event of Default, Landlord
shall have the  following  remedies,  which shall not be exclusive  but shall be
cumulative  and shall be in  addition  to any other  remedies  now or  hereafter
allowed by law:

                  (a) Landlord may terminate Tenant's right to possession of the
Premises at any time by written notice to Tenant. Tenant expressly  acknowledges
that in the  absence  of such  written  notice  from  Landlord,  no other act of
Landlord,  including re-entry into the Premises,  efforts to relet the Premises,
reletting of the Premises for  Tenant's  account,  storage of Tenant's  personal
property and Trade  Fixtures,  acceptance of keys to the Premises from Tenant or
exercise of any other rights and remedies under this Section,  shall  constitute
an acceptance of Tenant's  surrender of the Premises or constitute a termination
of this Lease or of Tenant's  right to  possession  of the  Premises.  Upon such
termination  in writing of Tenant's  right to  possession  of the  Premises,  as
herein  provided,  this Lease shall  terminate and Landlord shall be entitled to
recover damages from Tenant as provided in California  Civil Code Section 1951.2
and any other  applicable  existing  or future Law  providing  for  recovery  of
damages for such breach,  including the worth at the time of award of the amount
by which the rent which would be payable by Tenant  hereunder  for the remainder
of the Term after the date of the award of damages, including Additional Rent as
reasonably  estimated  by  Landlord,  exceeds  the amount of such rental loss as
Tenant  proves could have been  reasonably  avoided,  discounted at the discount
rate published by the Federal  Reserve Bank of San Francisco for member banks at
the time of the award plus one percent (1%).

                  (b)  Landlord  shall have the remedy  described in  California
Civil Code Section  1951.4  (Landlord  may  continue  this Lease in effect after
Tenant's  breach and  abandonment  and recover rent as it becomes due, if Tenant
has the right to sublet or assign, subject only to reasonable limitations).

                   (c)Landlord  may  cure  the  Event  of  Default  at  Tenant's
expense.  If Landlord  pays any sum or incurs any expense in curing the Event of
Default,  Tenant  shall  reimburse  Landlord  upon demand for the amount of such
payment or expense with  interest at the Interest  Rate from the date the sum is
paid or the expense is incurred until Landlord is reimbursed by Tenant.

                  (d)  Landlord  may  remove  all  Tenant's  property  from  the
Premises,  and such property may be stored by Landlord in a public  warehouse or
elsewhere at the sole cost and for the account of Tenant.  If Landlord  does not
elect to store any or all of Tenant's  property left in the  Premises,  Landlord
may consider such property to be abandoned by Tenant, and Landlord may thereupon
dispose of such  property in any manner  deemed  appropriate  by  Landlord.  Any
proceeds  realized  by Landlord on the  disposal of any such  property  shall be
applied first to offset all expenses of storage and sale, then credited  against
Tenant's  outstanding  obligations to Landlord under this Lease, and any balance
remaining after satisfaction of all obligations of Tenant under this Lease shall
be delivered to Tenant.

16.      LATE CHARGE AND INTEREST.

         16.1     Late  Charge.  If any  payment  of  rent  is not  received  by
Landlord  within five (5) days after written notice from Landlord to Tenant that
the payment is past due, Tenant shall pay to Landlord on demand as a late charge
an  additional  amount  equal  to  four  percent  (4%) of the  overdue  payment;
provided,  however,  if Landlord has given Tenant written notice one (1) or more
times in any consecutive twelve (12) month period that a payment of rent is past
due,  then Tenant  shall pay to Landlord  on demand  commencing  with the second
(2nd) past due payment in any twelve (12) month period, and continuing with each
past due payment  thereafter in such twelve (12) month period,  as a late charge
an additional  amount equal to four percent (4%) of the overdue  payment without
any  requirement  of  additional  notice  that such  payment is past due. A late
charge shall not be imposed  more than once on any  particular  installment  not
paid when due, but  imposition of a late charge on any payment not made when due
does not eliminate or supersede late charges  imposed on other (prior)  payments
not made when due or preclude  imposition of a late charge on other installments
or payments not made when due.

         16.2     Interest.  In addition to the late charges  referred to above,
which are intended to defray Landlord's costs resulting from late payments,  any
payment  from Tenant to Landlord  not paid when due shall at  Landlord's  option
bear  interest from the date due until paid to Landlord by Tenant at the rate of
fifteen  percent  (15%) per annum or the maximum  lawful rate that  Landlord may
charge to Tenant under applicable laws, whichever is less (the "Interest Rate").
Acceptance of any late charge and/or  interest  shall not constitute a waiver of
Tenant's  default  with  respect to the  overdue  sum or prevent  Landlord  from
exercising any of its other rights and remedies under this Lease.

17.      WAIVER.  No provisions of this Lease shall be deemed waived by either
party unless such waiver is in a writing signed by the waiving party. The waiver
by either party of any breach of any provision of this Lease shall not be deemed
a waiver of such provision or of any subsequent  breach of the same or any other
provision  of this Lease.  No delay or omission in the  exercise of any right or
remedy of either  party upon any default by the other  party  shall  impair such
right or  remedy  or be  construed  as a waiver.  Landlord's  acceptance  of any
payments  of rent due  under  this  Lease  shall  not be  deemed a waiver of any
default by Tenant  under this Lease  (including  Tenant's  recurrent  failure to
timely pay rent) other than  Tenant's  nonpayment of the accepted  sums,  and no
endorsement or statement on any check or on any letter accompanying any check or
payment shall be deemed an accord and  satisfaction.  The consent to or approval
by  either  party of any act by the other  party  requiring  the  first  party's
consent  or  approval  shall not be deemed  to waive or render  unnecessary  the
consenting or approving  party's consent to or approval of any subsequent act by
the other party.

18.      ENTRY,  INSPECTION AND  CLOSURE.  Upon  reasonable  oral or written
notice  to  Tenant  (and  without  notice  in  emergencies),  Landlord  and  its
authorized  representatives  may enter the Premises at all reasonable  times to:
(a) determine whether the Premises are in good condition,  (b) determine whether
Tenant is  complying  with its  obligations  under this  Lease,  (c) perform any
maintenance  or repair of the  Premises or the  Building  that  Landlord has the
right or obligation  to perform,  (d) install or repair  improvements  for other
tenants  where  access to the  Premises is  required  for such  installation  or
repair, (e) serve, post or keep posted any notices required or allowed under the
provisions of this Lease, (f) show the Premises to prospective brokers,  agents,
buyers,  transferees,  or Mortgagees, or (g) do any other act or thing necessary
for the safety or  preservation  of the Premises or the  Building.  In addition,
upon  prior  oral or written  notice to  Tenant,  Landlord  shall have the right
during  the last  twelve  (12)  months  of the  Term,  to show the  Premises  to
prospective  tenants.  Notwithstanding  the  foregoing,  any access by  Landlord
(including any of the foregoing in this  paragraph) to Tenant's  "clean room" in
the Premises shall be subject to Tenant's  reasonable  restrictions and control.
When reasonably  necessary  Landlord may  temporarily  close  entrances,  doors,
corridors,  elevators or other facilities in the Building  without  liability to
Tenant by reason of such closure.  Landlord shall conduct its  activities  under
this  Section in a manner that will  minimize  inconvenience  to Tenant  without
incurring  additional expense to Landlord.  In no event shall Tenant be entitled
to an abatement of rent on account of any entry by Landlord,  and Landlord shall
not be liable in any manner for any  inconvenience,  loss of  business  or other
damage  to  Tenant  or other  persons  arising  out of  Landlord's  entry on the
Premises in accordance with this Section. No action by Landlord pursuant to this
paragraph  shall  constitute an eviction of Tenant,  constructive  or otherwise,
entitle  Tenant to an abatement of rent or to terminate  this Lease or otherwise
release Tenant from any of Tenant's obligations under this Lease.

19.      SURRENDER AND HOLDING OVER.

         19.1     Surrender.  Upon the  expiration or termination of this Lease,
Tenant shall surrender the Premises and all Tenant  Improvements and Alterations
to Landlord  broom-clean and in their original condition,  except for reasonable
wear and tear,  damage from casualty or condemnation  and any changes  resulting
from approved  Alterations;  provided,  however, that prior to the expiration or
termination  of this Lease Tenant shall remove all  telephone  and other cabling
installed  in the  Building by Tenant and remove from the  Premises all Tenant's
personal  property and any Trade Fixtures and all Alterations  that Landlord has
elected  to  require  Tenant to  remove  as  provided  in  Section  6.1 - Tenant
Improvements  &  Alterations,  and repair any damage caused by such removal.  If
such removal is not completed  before the expiration or termination of the Term,
Landlord shall have the right (but no obligation) to remove the same, and Tenant
shall pay  Landlord on demand for all costs of removal  and storage  thereof and
for the rental  value of the  Premises  for the period  from the end of the Term
through the end of the time reasonably required for such removal. Landlord shall
also have the right to retain or dispose of all or any portion of such  property
if Tenant does not pay all such costs and retrieve the property  within ten (10)
days after  notice from  Landlord  (in which  event  title to all such  property
described in Landlord's  notice shall be  transferred  to and vest in Landlord).
Tenant  waives  all  Claims  against  Landlord  for any damage or loss to Tenant
resulting from Landlord's  removal,  storage,  retention,  or disposition of any
such  property.  Upon  expiration  or  termination  of this Lease or of Tenant's
possession,  whichever  is  earliest,  Tenant  shall  surrender  all keys to the
Premises or any other part of the  Building  and shall  deliver to Landlord  all
keys for or make  known  to  Landlord  the  combination  of locks on all  safes,
cabinets and vaults that may be located in the  Premises.  Tenant's  obligations
under this Section shall survive the expiration or termination of this Lease.

         19.2     Holding Over. If Tenant (directly or through any Transferee or
other  successor-in-interest  of Tenant)  remains in  possession of the Premises
after the expiration or termination of this Lease, Tenant's continued possession
shall be on the basis of a tenancy  at the  sufferance  of  Landlord.  No act or
omission by Landlord,  other than its specific written consent, shall constitute
permission  for Tenant to continue in possession  of the  Premises,  and if such
consent is given or  declared to have been given by a court  judgment,  Landlord
may terminate  Tenant's holdover tenancy at any time upon seven (7) days written
notice.  In such event,  Tenant shall continue to comply with or perform all the
terms and  obligations of Tenant under this Lease,  except that the monthly Base
Rent during  Tenant's  holding  over shall be twice the Base Rent payable in the
last full month prior to the termination hereof.  Acceptance by Landlord of rent
after such  termination  shall not  constitute  a renewal or  extension  of this
Lease;  and  nothing  contained  in this  provision  shall  be  deemed  to waive
Landlord's  right of  re-entry or any other right  hereunder  or at law.  Tenant
shall indemnify,  defend and hold Landlord  harmless from and against all Claims
arising or resulting  directly or  indirectly  from  Tenant's  failure to timely
surrender the Premises,  including (i) any rent payable by or any loss, cost, or
damages claimed by any prospective  tenant of the Premises,  and (ii) Landlord's
damages as a result of such prospective  tenant  rescinding or refusing to enter
into the  prospective  lease of the Premises by reason of such failure to timely
surrender the Premises.

20.      ENCUMBRANCES.

         20.1     Subordination.  This  Lease  is  expressly  made  subject  and
subordinate to any mortgage,  deed of trust,  ground lease,  underlying lease or
like encumbrance  affecting any part of the Property or any interest of Landlord
therein which is now existing or hereafter executed or recorded ("Encumbrance");
provided, however, that such subordination shall only be effective, as to future
Encumbrances,  if the holder of the  Encumbrance  agrees  that this Lease  shall
survive the  termination  of the  Encumbrance  by lapse of time,  foreclosure or
otherwise  so long as Tenant is not in  default  under  this  Lease  beyond  any
applicable  notice and cure period.  Provided the  conditions  of the  preceding
sentence are satisfied, Tenant shall execute and deliver to Landlord, within ten
(10) days after written  request  therefor by Landlord and in a form  reasonably
requested by Landlord,  any additional documents evidencing the subordination of
this Lease with respect to any such Encumbrance and the nondisturbance agreement
of the  holder of any such  Encumbrance.  If the  interest  of  Landlord  in the
Property is transferred pursuant to or in lieu of proceedings for enforcement of
any Encumbrance,  Tenant shall immediately and  automatically  attorn to the new
owner,  and this Lease shall continue in full force and effect as a direct lease
between the  transferee and Tenant on the terms and conditions set forth in this
Lease.  Landlord agrees to use reasonable good faith efforts to obtain within 60
days  after   execution  of  this  Lease,   a   Subordination,   Attornment  and
Non-Disturbance  Agreement  (the  "SNDA")  from the  holder  of any  Encumbrance
existing at the date of this Lease pursuant to the provisions  contained  above;
provided,  Landlord's failure to obtain an SNDA shall not affect the validity of
this Lease.  Tenant shall be  responsible  for all costs and fees charged by any
holder of an Encumbrance to prepare or negotiate an SNDA.

         20.2     Mortgagee  Protection. Tenant agrees to give any holder of any
Encumbrance covering any part of the Property ("Mortgagee"), by registered mail,
a copy of any notice of default  served upon  Landlord,  provided  that prior to
such notice  Tenant has been notified in writing (by way of notice of assignment
of rents and leases, or otherwise) of the address of such Mortgagee. If Landlord
shall  have  failed  to cure  such  default  within  thirty  (30)  days from the
effective  date of such  notice of  default,  then the  Mortgagee  shall have an
additional thirty (30) days within which to cure such default or if such default
cannot be cured within that time,  then such additional time as may be necessary
to cure such  default  (including  the time  necessary to foreclose or otherwise
terminate  its  Encumbrance,  if necessary to effect such cure),  and this Lease
shall not be terminated so long as such remedies are being diligently pursued.

21.      ESTOPPEL CERTIFICATES AND FINANCIAL STATEMENTS.

         21.1     Estoppel  Certificates.  Within  ten (10) days  after  written
request  therefor,  Tenant  shall  execute  and deliver to  Landlord,  in a form
provided by or satisfactory to Landlord,  a certificate  stating that this Lease
is in full force and effect,  describing any amendments or modifications hereto,
acknowledging  that this Lease is subordinate  or prior,  as the case may be, to
any  Encumbrance  and  stating any other  information  Landlord  may  reasonably
request,  including the Term,  the monthly Base Rent, the date to which Rent has
been paid,  the amount of any security  deposit or prepaid rent,  whether either
party hereto is in default  under the terms of the Lease,  and whether  Landlord
has completed its construction  obligations  hereunder (if any). If Tenant fails
timely to execute and deliver such certificate as provided above,  then Landlord
and the  addressee  of such  certificate  shall  be  entitled  to rely  upon the
information  contained in the certificate  submitted to Tenant as true,  correct
and complete, and Tenant shall be estopped from later denying,  contradicting or
taking  any  position  inconsistent  with  the  information  contained  in  such
certificate.  Any  person or entity  purchasing,  acquiring  an  interest  in or
extending  financing with respect to the Property shall be entitled to rely upon
any such  certificate.  If Tenant fails to deliver such  certificate  within ten
(10) days after  Landlord's  second written  request  therefor,  Tenant shall be
liable to Landlord for any damages incurred by Landlord including any profits or
other benefits from any financing of the Property or any interest  therein which
are lost or made  unavailable as a result,  directly or indirectly,  of Tenant's
failure or refusal to timely execute or deliver such estoppel certificate.

         21.2     Financial  Statements.  Within  ten (10)  days  after  written
request  therefor,  but not more  than  once a year,  Tenant  shall  deliver  to
Landlord  a copy of the  financial  statements  (including  at  least a year end
balance  sheet  and a  statement  of profit  and  loss) of  Tenant  (and of each
guarantor of Tenant's  obligations  under this Lease) for each of the three most
recently  completed  years,  prepared  in  accordance  with  generally  accepted
accounting  principles (and, if such is Tenant's normal practice,  audited by an
independent certified public accountant),  all then available subsequent interim
statements,  and such other financial information as may reasonably be requested
by Landlord or required by any Mortgagee.  So long as Tenant is publicly  traded
on a nationally  recognized stock exchange,  Tenant can satisfy the requirements
for  financial   statements  by  providing  the  publicly  available   financial
statements.

22.      NOTICES. Any notice, demand, request,  consent or approval that either
party  desires or is  required to give to the other party under this Lease shall
be in writing and shall be served personally,  delivered by messenger or courier
service,  or sent by U.S.  certified  mail,  return receipt  requested,  postage
prepaid,  addressed  to the other party at the  party's  address for notices set
forth in the Basic Lease  Information.  Any notice required pursuant to any Laws
may be incorporated  into, given  concurrently with or given separately from any
notice required under this Lease. Notices shall be deemed to have been given and
be  effective on the earlier of (a) receipt (or refusal of delivery or receipt);
or (b) one (1) day after acceptance by the independent service for delivery,  if
sent by  independent  messenger  or  courier  service,  or three (3) days  after
mailing if sent by mail in accordance with this Section. Either party may change
its address for notices  hereunder,  effective fifteen (15) days after notice to
the other party  complying  with this Section.  If Tenant  sublets the Premises,
notices from Landlord  shall be effective on the subtenant  when given to Tenant
pursuant to this Section.

23.      ATTORNEYS' FEES.In the event of any dispute between Landlord and Tenant
in any way  related to this  Lease,  the  non-prevailing  party shall pay to the
prevailing  party all reasonable  attorneys'  fees and costs and expenses of any
type  incurred  by the  prevailing  party  in  connection  with  any  action  or
proceeding  (including any appeal and the enforcement of any judgment or award),
whether or not the dispute is litigated or  prosecuted  to final  judgment.  The
"prevailing party" shall be determined based upon an assessment of which party's
major arguments or positions  taken in the action or proceeding  could fairly be
said to have prevailed  (whether by compromise,  settlement,  abandonment by the
other party of its claim or  defense,  final  decision,  after any  appeals,  or
otherwise) over the other party's major arguments or positions on major disputed
issues.

24.      QUIET POSSESSION.  Subject to Tenant's full and timely performance of
all of  Tenant's  obligations  under this Lease and subject to the terms of this
Lease,  including  Section  20 -  Encumbrances,  Tenant  shall  have  the  quiet
possession  of the  Premises  throughout  the Term as  against  any  persons  or
entities lawfully claiming by, through or under Landlord.

25.      SECURITY  MEASURES.Tenant shall be responsible for all security
measures for the  Premises,  such as the  registration  or search of all persons
entering or leaving the  Building,  requiring  identification  for access to the
Building,  evacuation of the Building for cause,  suspected  cause, or for drill
purposes,  the issuance of magnetic  pass cards or keys for Building or elevator
access to  prevent  any threat of  property  loss or  damage,  bodily  injury or
business  interruption.  Landlord shall have no security  responsibility for the
Premises  or the  Project.  Landlord,  its  agents and  employees  shall have no
liability to Tenant or its Representatives or Visitors for the implementation or
exercise of, or the failure to implement or exercise,  any security measures for
the Premises or the Project, or for any resulting disturbance of Tenant's use or
enjoyment of the Premises.

26.      FORCE  MAJEURE.  If Landlord or Tenant is delayed,  interrupted or
prevented from performing any of their respective  obligations under this Lease,
including its obligations under the Construction Rider (if any), and such delay,
interruption  or  prevention  is due to fire,  act of God,  governmental  act or
failure to act, labor dispute,  unavailability of materials or any cause outside
the  reasonable  control of either party,  then the time for  performance of the
affected  obligations  of the  delayed  party  shall  be  extended  for a period
equivalent   to  the  period  of  such  delay,   interruption   or   prevention.
Notwithstanding the foregoing,  force majeure delays shall not apply to Tenant's
obligations to pay any monetary sums due under this Lease.

27.      RULES AND  REGULATIONS. Tenant shall be bound by and shall comply with
the rules and regulations attached to and made a part of this Lease as Exhibit C
to the extent those rules and  regulations are not in conflict with the terms of
this Lease, as well as any reasonable rules and regulations hereafter adopted by
Landlord  for all  tenants  of the  Building,  upon  notice  to  Tenant  thereof
(collectively,  the "Building  Rules").  Landlord  shall not be  responsible  to
Tenant or to any other person for any violation  of, or failure to observe,  the
Building Rules by any other tenant or other person.

28.      LANDLORD'S LIABILITY. The term "Landlord," as used in this Lease, shall
mean only the owner or owners of the  Building at the time in  question.  In the
event of any  conveyance of title to the Building,  then from and after the date
of such conveyance,  the transferor  Landlord shall be relieved of all liability
with respect to Landlord's  obligations  to be performed  under this Lease after
the date of such  conveyance  upon the  transferee  agreeing to  recognize  this
Lease.  Notwithstanding any other term or provision of this Lease, the liability
of Landlord for Landlord's breach of its obligations under this Lease is limited
solely to (a)  Landlord's  interest in the Building as the same may from time to
time be encumbered,  and (b) proceeds  received by Landlord from  Landlord's all
risk insurance  policy covering the Building  following a fire or other casualty
to the Premises or the Building,  if Landlord  materially  misappropriates  such
proceeds, and either (i) such proceeds are not used for repair or restoration in
accordance  with the provisions of Section 12 of this Lease,  or (ii) this Lease
is not terminated in accordance with the provisions of Section 12 of this Lease,
and no personal  liability shall at any time be asserted or enforceable  against
any other assets of Landlord or against Landlord's partners or members or its or
their  respective  partners,  shareholders,   members,  directors,  officers  or
managers  on  account of any of  Landlord's  obligations  or actions  under this
Lease.

29.      CONSENTS AND APPROVALS.

         29.1     Determination  in Good Faith. Wherever the consent,  approval,
judgment or determination of Landlord is required or permitted under this Lease,
Landlord  may  exercise  its  good  faith  business   judgment  in  granting  or
withholding such consent or approval or in making such judgment or determination
without  reference  to any  extrinsic  standard  of  reasonableness,  unless the
specific provision contained in this Lease providing for such consent, approval,
judgment or determination  specifies that Landlord's  consent or approval is not
to be unreasonably  withheld,  or that such judgment or  determination  is to be
reasonable,  or  otherwise  specifies  the  standards  under which  Landlord may
withhold its  consent.  If it is  determined  that  Landlord  failed to give its
consent  where  it was  required  to do so under  this  Lease,  Tenant  shall be
entitled to injunctive  relief but shall not to be entitled to monetary  damages
or to terminate this Lease for such failure.

         29.2     No  Liability Imposed on Landlord.  The review and/or approval
by Landlord  of any item or matter to be reviewed or approved by Landlord  under
the terms of this Lease or any Exhibits or Addenda  hereto shall not impose upon
Landlord  any  liability  for the  accuracy or  sufficiency  of any such item or
matter or the quality or suitability of such item for its intended use. Any such
review or approval is for the sole purpose of protecting  Landlord's interest in
the Property, and no third parties,  including Tenant or the Representatives and
Visitors of Tenant or any person or entity claiming by, through or under Tenant,
shall have any rights as a consequence thereof.

30.      BROKERS.  Landlord shall pay the fee or commission of the broker or
brokers  identified in the Basic Lease  Information (the "Broker") in accordance
with  Landlord's  separate  written  agreement with the Broker,  if any.  Tenant
warrants and  represents to Landlord that in the  negotiating  or making of this
Lease  neither  Tenant nor anyone  acting on Tenant's  behalf has dealt with any
broker or finder who might be  entitled  to a fee or  commission  for this Lease
other than the Broker.  Tenant shall  indemnify and hold Landlord  harmless from
any claim or claims,  including costs,  expenses and attorney's fees incurred by
Landlord  asserted by any other broker or finder for a fee or  commission  based
upon any dealings with or statements made by Tenant or Tenant's Representatives.
Landlord  shall  indemnify  and hold Tenant  harmless  from any claim or claims,
including costs, expenses and attorney's fees incurred by Tenant asserted by any
other broker or finder for a fee or  commission  based upon any dealings with or
statements made by Landlord or Landlord's Representatives.

31.      RELOCATION OF PREMISES.  [Intentionally Deleted].

32.      ENTIRE  AGREEMENT.  This  Lease,  including  the  Exhibits  and any
Addenda  attached  hereto,  and  the  documents  referred  to  herein,  if  any,
constitute the entire agreement  between Landlord and Tenant with respect to the
leasing  of  space  by  Tenant  in the  Building,  and  supersede  all  prior or
contemporaneous agreements, understandings,  proposals and other representations
by or between  Landlord and Tenant,  whether  written or oral,  all of which are
merged  herein.   Neither   Landlord  nor   Landlord's   agents  have  made  any
representations  or warranties with respect to the Premises,  the Building,  the
Project or this  Lease  except as  expressly  set forth  herein,  and no rights,
easements or licenses  shall be acquired by Tenant by  implication  or otherwise
unless expressly set forth herein.  The submission of this Lease for examination
does not  constitute  an option for the  Premises  and this Lease  shall  become
effective as a binding  agreement  only upon  execution and delivery  thereof by
Landlord to Tenant.

33.      MISCELLANEOUS. This Lease may not be amended or modified except by a
writing  signed by Landlord and Tenant.  Subject to Section 14 - Assignment  and
Subletting and Section 28 - Landlord's Liability, this Lease shall be binding on
and shall inure to the benefit of the parties and their  respective  successors,
assigns and legal representatives.  The determination that any provisions hereof
may be void,  invalid,  illegal  or  unenforceable  shall not  impair  any other
provisions  hereof and all such other  provisions  of this Lease shall remain in
full force and effect.  The  unenforceability,  invalidity  or illegality of any
provision  of  this  Lease  under  particular  circumstances  shall  not  render
unenforceable,  invalid or illegal other  provisions of this Lease,  or the same
provisions  under  other  circumstances.  This  Lease  shall  be  construed  and
interpreted in accordance with the laws (excluding  conflict of laws principles)
of the State in which the  Building is  located.  The  provisions  of this Lease
shall be construed in accordance  with the fair meaning of the language used and
shall not be strictly construed against either party, even if such party drafted
the  provision  in  question.  When  required by the context of this Lease,  the
singular  includes  the plural.  Wherever the term  "including"  is used in this
Lease,  it shall be interpreted as meaning  "including,  but not limited to" the
matter or matters  thereafter  enumerated.  The captions contained in this Lease
are for  purposes of  convenience  only and are not to be used to  interpret  or
construe  this Lease.  If more than one person or entity is identified as Tenant
hereunder,  the  obligations  of each and all of them under this Lease  shall be
joint and several.  Time is of the essence with respect to this Lease, except as
to the  conditions  relating to the  delivery of  possession  of the Premises to
Tenant. Neither Landlord nor Tenant shall record this Lease.

34.      AUTHORITY.    If   Tenant   is a  corporation,  partnership,  limited
liability  company  or  other  form of  business  entity,  each  of the  persons
executing this Lease on behalf of Tenant  warrants and represents that Tenant is
a duly  organized and validly  existing  entity,  that Tenant has full right and
authority  to enter  into this Lease and that the  persons  signing on behalf of
Tenant are  authorized to do so and have the power to bind Tenant to this Lease.
Tenant shall provide Landlord upon request with evidence reasonably satisfactory
to Landlord confirming the foregoing representations.

         IN WITNESS WHEREOF, Landlord and Tenant have entered into this Lease as
of the date first above written.

TENANT:                             LANDLORD:

PERCLOSE, INC.,                     SEAPORT CENTRE ASSOCIATES, LLC
a Delaware corporation              a California limited liability company

                                    By:  OPPORTUNITY CAPITAL PARTNERS IV, LLC,
By: /S/KEN LUDLUM                        a California limited liability company
    --------------------------           Manager
    Name:  Ken Ludlum
    Title: Chief Financial Officer

                                          By: /S/ R. MATTHEW MORAN
                                          Name:  R. Matthew Moran
                                          Title: Manager

By:  /S/ HANK PLAIN
      --------------------------
     Name: Hank Plain
     Title:Chief Executive Officer        By: /S/ STEPHEN J. PILCH
                                          -------------------------------
                                          Name:  Stephen J. Pilch
                                          Title: Authorized Signatory


<PAGE>



                                    EXHIBIT A

                        ATTACHED TO AND FORMING A PART OF
                                 LEASE AGREEMENT
                           DATED AS OF APRIL 16, 1998
                                     BETWEEN
                  SEAPORT CENTRE ASSOCIATES, LLC, AS LANDLORD,
                                       AND
                       PERCLOSE, INC., AS TENANT ("LEASE")


                                  THE PREMISES



                                 300 Saginaw
                                 400 Saginaw



                          [Floor plan showing location
                          and configuration of Premises.]


                                                         INITIALS:

                                                         Landlord ______

                                                         Tenant ______


<PAGE>

                                    EXHIBIT B

                        ATTACHED TO AND FORMING A PART OF
                                 LEASE AGREEMENT
                           DATED AS OF APRIL 16, 1998
                                     BETWEEN
                  SEAPORT CENTRE ASSOCIATES, LLC, AS LANDLORD,
                                       AND
                       PERCLOSE, INC., AS TENANT ("LEASE")


                               CONSTRUCTION RIDER


         1. No Work to be  Performed  by  Landlord.  Tenant  has  inspected  and
examined  the  Premises and has elected to lease the Premises as provided in the
Lease on a  strictly  "AS IS" basis  (subject  to  Landlord's  obligations  with
respect to MEP Systems  contained in Section 7.1 of the Lease).  Landlord  shall
have no  obligation  to perform  any work to  prepare  the  Premises  for use or
occupancy  by  Tenant.  Tenant  shall  be  solely  responsible  for  making  any
alterations  or  improvements  to the  Premises  required  or desired by Tenant,
subject to and in accordance with the provisions of Article 6 - Alterations - of
the Lease.  Upon  request by  Landlord,  Tenant  shall  designate  in writing an
individual  authorized  to act as Tenant's  Representative  with  respect to all
approvals, directions and authorizations pursuant to this Construction Rider.

         Tenant shall with reasonable  diligence  through San Jose  Construction
construct and install in the Premises the improvements and fixtures provided for
in this  Construction  Rider  ("Tenant  Improvements").  Tenant  agrees to offer
Commercial   Interior   Contractors  ("CIC")  the  opportunity  to  bid  on  the
construction of Tenant Improvements. Tenant recognizes and agrees that CIC is an
affiliate of Landlord.

         Tenant  agrees  that if CIC is not awarded  the  contract to  construct
Tenant  Improvements  in the  Premises,  then  Landlord  shall be  entitled to a
supervision fee (the "Supervision Fee") equal to the lesser of (a) three percent
(3%) of the total cost to construct the Tenant Improvements in the Premises,  or
(b)  Thirty  Thousand  and  00/100  Dollars  ($30,000.00)  for  supervising  the
contractor constructing the Tenant Improvements.  Tenant agrees that, while such
supervision  is for the  benefit of both  parties,  such  supervision  shall not
constitute a  representation  or warranty by Landlord that the  construction  of
Tenant  Improvements  does in fact  comply  either  with the final  Construction
Documents   (as   hereinafter   defined),   or  with   applicable   governmental
requirements.  Tenant shall pay the  Supervision  Fee to Landlord  within thirty
(30) days following Substantial Completion of the Tenant Improvements.

                   1.1.   Plans.   Landlord   acknowledges   that   the   Tenant
Improvements  shall be constructed on a  design/build  basis in accordance  with
plans and specifications for the Premises to be prepared by Arctec ("Designer").

                   As soon as may be reasonably  practicable after execution and
delivery of the Lease,  the  Designer  will  prepare and deliver to Landlord and
Tenant detailed plans and  specifications  sufficient to permit the construction
of the Tenant  Improvements by Tenant's contractor  ("Construction  Documents").
Such  Construction  Documents  shall be  subject  to  Landlord's  prior  written
approval,  which approval  shall not be  unreasonably  withheld.  Landlord shall
approve or disapprove,  with detailed written comments and proposed changes, the
Construction  Documents  within Five (5) Business Days after  Landlord  receives
such Construction Documents from the Designer. The Designer will then revise the
Construction  Documents  and  resubmit  them to  Landlord  and  Tenant for their
approval,  which approval  shall not be  unreasonably  withheld or  conditioned.
Landlord and Tenant shall have Five (5) Business Days after receipt within which
to approve  or  disapprove  the  revised  Construction  Documents.  The  revised
Construction  Documents,  as approved by Tenant and  Landlord,  are  hereinafter
referred to as the "Final Construction Documents".

                   1.2 Construction. Upon approval by Landlord and Tenant of the
Final Construction Documents,  Tenant shall proceed with reasonable diligence to
cause  the  Tenant  Improvements  to  be  Substantially  Completed.  The  Tenant
Improvements shall be deemed to be "Substantially Completed" when they have been
completed  in  accordance  with the  Final  Construction  Documents  except  for
finishing details,  minor omissions,  decorations and mechanical  adjustments of
the type normally found on an  architectural  "punch list".  (The  definition of
Substantially Completed shall also define the terms "Substantial Completion" and
"Substantially Complete.")

                   1.3.  Cost of Tenant  Improvements.  Tenant  is taking  the
Premises in their existing "AS IS" condition (subject to Landlord's  obligations
with respect to MEP Systems  contained in Section 7.1 of the Lease),  and Tenant
shall be responsible for the entire cost of the design (including preparation of
space plans and  Construction  Documents),  construction and installation of the
Tenant Improvements.  Notwithstanding anything to the contrary contained in this
Lease,  Tenant shall have no  responsibility  for the Costs  attributable to (A)
improvements  installed  outside the demising  walls of the Premises  unless (1)
necessitated  by Tenant  Improvements  made  inside  the  demising  walls of the
Premises;  or (2)  requested  by  Tenant  or as  shown in the  approved  working
drawings;  and (B) improvements  installed  "off-site" (such as streets,  curbs,
gutters, traffic lights, lights for parking and street lighting);

         3.   Access  to Premises.  Landlord shall allow Tenant and Tenant's
Representatives  to enter the Premises prior to the Commencement Date to inspect
the  Premises;  provided,  however,  that prior to such  entry of the  Premises,
Tenant shall provide evidence reasonably  satisfactory to Landlord that Tenant's
insurance, as described in Section 11.1 - Tenant's Insurance of the Lease, shall
be in effect as of the time of such entry.

         Tenant  agrees  that  Landlord  shall  not be liable in any way for any
injury,  loss or damage which may occur to any of Tenant's  property placed upon
or installed in the Premises prior to the  Commencement  Date, the same being at
Tenant's sole risk, and Tenant shall be liable for all injury, loss or damage to
persons or  property  arising as a result of such  entry  into the  Premises  by
Tenant or its Representatives.

         4. Ownership of Tenant Improvements.  All Tenant Improvements,  whether
installed by Landlord or Tenant,  shall become a part of the Premises,  shall be
the property of Landlord and,  subject to the provisions of the Lease,  shall be
surrendered by Tenant with the Premises,  without any compensation to Tenant, at
the expiration or termination of the Lease in accordance  with the provisions of
the Lease.  In no event shall Tenant be required to remove Tenant  Improvements,
except those Tenant  Improvements  identified by Landlord when Landlord approves
the Construction Documents.

                                                       INITIALS:

                                                       Landlord ______
                                                       Tenant ______


<PAGE>



                                    EXHIBIT C

                        ATTACHED TO AND FORMING A PART OF
                                 LEASE AGREEMENT
                           DATED AS OF APRIL 16, 1998
                                     BETWEEN
                  SEAPORT CENTRE ASSOCIATES, LLC, AS LANDLORD,
                                       AND
                       PERCLOSE, INC., AS TENANT ("LEASE")


                                 BUILDING RULES

         The following Building Rules are additional provisions of the foregoing
Lease to which they are  attached.  The  capitalized  terms used herein have the
same meanings as these terms are given in the Lease.

         1. Use of Common Areas. Tenant will not obstruct the sidewalks,  halls,
passages,  exits,  entrances,  elevators or  stairways of the Building  ("Common
Areas"),  and Tenant will not use the Common  Areas for any  purpose  other than
ingress and egress to and from the Premises.  The Common  Areas,  except for the
sidewalks, are not open to the general public and Landlord reserves the right to
control and prevent access to the Common Areas of any person whose presence,  in
Landlord's opinion, would be prejudicial to the safety, reputation and interests
of the Building and its tenants.

         2.  Limited  Access to Roof.  Tenant  shall have the  limited  right of
access to the roofs of the  Buildings in order to repair or replace any antenna,
aerial,  aerial wires, fan,  air-conditioner or other device on the roofs of the
Buildings,  without the prior written consent of Landlord.  If Tenant desires to
have access to the roofs of the Buildings in order to install any new devices to
the roofs,  other than to replace any existing  devices,  Tenant  shall  request
Landlord's consent, which consent shall not be unreasonably withheld or delayed.
Any such device installed  without such written consent is subject to removal at
Tenant's  expense without notice at any time. In any event Tenant will be liable
for any damages or repairs incurred or required as a result of its installation,
use,  repair,  maintenance or removal of such devices on the roofs and agrees to
indemnify and hold harmless Landlord from any liability,  loss, damage,  cost or
expense,  including  reasonable  attorneys' fees, arising from any activities of
Tenant or of Tenant's Representatives on the roof of the Buildings.

         3.  Signage.  Tenant  shall have the right,  at Tenant's  sole cost and
expense,  to install a sign upon a monument to be located  near the  entrance to
each of the Buildings, subject to Landlord's reasonable approval, and subject to
ordinances, regulations and any approval from the City of Redwood City. Landlord
shall,  at  Landlord's  sole cost and  expense,  construct  a monument  near the
entrance  to each of the  Buildings,  subject to approval of the City of Redwood
City. No sign, placard,  picture, name, advertisement or notice visible from the
exterior  of the  Premises  will be  inscribed,  painted,  affixed or  otherwise
displayed by Tenant on or in any part of the Buildings without the prior written
consent of Landlord.  Landlord  reserves  the right to adopt and furnish  Tenant
with general guidelines  relating to signs in or on the Buildings.  All approved
signage will be  inscribed,  painted or affixed at Tenant's  expense by a person
approved by Landlord, which approval will not be unreasonably withheld.

         4.  Prohibited  Uses.  The Premises will not be used for the storage of
merchandise held for sale to the general public,  for lodging or for the sale of
goods to the general public.  Tenant will not permit any food preparation on the
Premises except that Tenant may use Underwriters' Laboratory approved microwaves
for cooking and  equipment  for brewing  coffee,  tea, hot chocolate and similar
beverages  so long as such use is in  accordance  with all  applicable  federal,
state and city laws, codes, ordinances, rules and regulations.

         5.  Janitorial  Services.  Tenant  will  be  responsible,  at  Tenant's
expense, to keep the Premises clean, including daily janitorial service.  Tenant
shall enter into an agreement  with a  janitorial  service to clean the Premises
during week-days.

         6. Keys and Locks.  Landlord will furnish Tenant,  free of charge,  two
keys to each door or lock in the Premises. Landlord may make a reasonable charge
for any  additional  or  replacement  keys.  Tenant will not duplicate any keys,
alter any locks or install any new or additional lock or bolt on any door of its
Premises or on any other part of the Building  without the prior written consent
of Landlord and, in any event,  Tenant will provide  Landlord with a key for any
such lock. On the termination of the Lease,  Tenant will deliver to Landlord all
keys to any locks or doors in the Building which have been obtained by Tenant.

         7. Freight.  Landlord reserves the right to prescribe the weight,  size
and position of all equipment,  materials,  furniture or other property  brought
into the  Buildings.  Landlord  reserves the right to require that heavy objects
will  stand on wood  strips of such  length and  thickness  as is  necessary  to
properly distribute the weight.  Landlord will not be responsible for loss of or
damage to any such  property  from any cause,  and Tenant will be liable for all
damage or injuries caused by moving or maintaining such property.

         8. Nuisances and Dangerous  Substances.  Tenant will not conduct itself
or permit Tenant's  Representatives  or Visitors to conduct  themselves,  in the
Premises or anywhere on or in the  Property in a manner  which is  offensive  or
unduly annoying to any other Tenant or Landlord's property managers. Tenant will
not install or operate any phonograph,  radio receiver,  musical instrument,  or
television or other similar device in any part of the Common Areas and shall not
operate any such device  installed  in the Premises in such manner as to disturb
or  annoy  other  tenants  of the  Project.  Tenant  will not use or keep in the
Premises or the Property any kerosene,  gasoline or other  combustible  fluid or
material  other than limited  quantities  thereof  reasonably  necessary for the
maintenance of office equipment,  or, without Landlord's prior written approval,
use any method of  heating  or air  conditioning  other  than that  supplied  by
Landlord.  Tenant will not use or keep any foul or noxious gas or  substance  in
the Premises or permit or suffer the Premises to be occupied or used in a manner
offensive  or  objectionable  to Landlord or other  occupants  of the Project by
reason of noise, odors or vibrations, or interfere in any way with other tenants
or those having business  therein.  Tenant will not bring or keep any animals in
or about the  Premises or the  Project,  except for animals  assisting  Tenant's
disabled Visitors.

         9. Building Name and Address. Without Landlord's prior written consent,
Tenant will not use the name of the Building in connection  with or in promoting
or advertising Tenant's business except as Tenant's address.

         10. Building  Directory.  A directory for the Building will be provided
for the display of the name and location of tenants. Landlord reserves the right
to approve any additional names Tenant desires to place in the directory and, if
so approved,  Landlord may assess a reasonable charge for adding such additional
names.

         11. Window Coverings. No curtains, draperies, blinds, shutters, shades,
awnings, screens or other coverings, window ventilators,  hangings,  decorations
or similar equipment shall be attached to, hung or placed in, or used in or with
any window of the Building  without the prior written  consent of Landlord,  and
Landlord  shall have the right to control all lighting  within the Premises that
may be visible from the exterior of the Building.

         12. Floor  Coverings.  Tenant will not lay or otherwise affix linoleum,
tile,  carpet or any other floor  covering  to the floor of the  Premises in any
manner except as approved in writing by Landlord.  Tenant will be liable for the
cost of repair of any damage  resulting  from the  violation of this rule or the
removal  of any  floor  covering  by  Tenant or its  contractors,  employees  or
invitees.

         13.  Wiring and  Cabling  Installations.  Tenant will be liable for the
cost of repair of any damage  resulting from (a) Tenant's  installation of data,
telephone  and  electrical  wires and cables in the  Premises,  or (b)  Tenant's
boring or cutting for wires or cables.  The  location of burglar  alarms,  smoke
detectors,  and call boxes shall be subject to the written  approval of Landlord
which shall not be unreasonably withheld or delayed.

         14. Office  Closing  Procedures.  Tenant will see that the doors of the
Premises  are closed and locked and that all water  faucets and water  apparatus
are not left on  unnecessarily  when Tenant or its employees leave the Premises,
so as to  prevent  waste or  damage.  Tenant  will be liable  for all  damage or
injuries  sustained by Landlord  resulting  from Tenant's  carelessness  in this
regard or  violation of this rule.  Tenant will keep the doors to the  Buildings
corridors closed at all times except for ingress and egress.

         15. Plumbing Facilities. The toilet rooms, toilets, urinals, wash bowls
and other  apparatus shall not be used for any purpose other than that for which
they were  constructed and no foreign  substance of any kind whatsoever shall be
disposed of therein. Tenant will be liable for any breakage,  stoppage or damage
resulting from the violation of this rule by Tenant, its employees or invitees.

         16.      Use of Hand Trucks.  [Intentionally Deleted].

         17.  Refuse.  Tenant shall store all Tenant's  trash and garbage within
the Premises or in other  facilities  designated  By Landlord for such  purpose.
Tenant shall not place in any trash box or receptacle  any material which cannot
be disposed of in the ordinary and customary manner of removing and disposing of
trash and garbage in the city in which the Building is located  without being in
violation of any law or ordinance governing such disposal. All trash and garbage
removal shall be made in accordance with directions  issued from time to time by
Landlord,  only through such Common Areas provided for such purposes and at such
times as Landlord may designate.  Tenant shall be responsible for removing trash
from the Premises.  Tenant shall comply with the  requirements  of any recycling
program adopted by Landlord for the Building.

         18. Soliciting.  Canvassing,  peddling,  soliciting and distribution of
handbills or any other  written  materials in the Building are  prohibited,  and
Tenant will cooperate to prevent the same.

         19. Parking.  Tenant will use, and cause Tenant's  Representatives  and
Visitors to use, any parking  spaces to which Tenant is entitled under the Lease
in a manner  consistent  with Landlord's  directional  signs and markings in the
Parking Facility. Specifically, but without limitation, Tenant will not park, or
permit  Tenant's  Representatives  or Visitors to park, in a manner that impedes
access to and from the Building or the Parking  Facility or that violates  space
reservations  for  handicapped  drivers  registered as such with the  California
Department of Motor Vehicles.  Landlord may use such reasonable  means as may be
necessary to enforce the directional signs and markings in the Parking Facility,
including  but not limited to towing  services,  and Landlord will not be liable
for any damage to vehicles towed as a result of non-compliance with such parking
regulations.

         20. Fire, Security and Safety Regulations.  Tenant will comply with all
safety,  security,  fire  protection  and  evacuation  measures  and  procedures
established by Landlord or any governmental agency.

         21. Responsibility for Theft. Tenant assumes any and all responsibility
for  protecting the Premises from theft,  robbery and pilferage,  which includes
keeping doors locked and other means of entry to the Premises closed.

         22.  Sales  and  Auctions.  Tenant  will not  conduct  or  permit to be
conducted  any sale by auction in, upon or from the Premises or elsewhere in the
Property,  whether  said  auction be  voluntary,  involuntary,  pursuant  to any
assignment  for the payment of creditors or pursuant to any  bankruptcy or other
insolvency proceeding.

         23.  Waiver  of  Rules.  Landlord  may  waive  any one or more of these
Building Rules for the benefit of any particular tenant or tenants,  but no such
waiver by Landlord will be construed as a waiver of such Building Rules in favor
of any other tenant or tenants nor prevent  Landlord from  thereafter  enforcing
these Building Rules against any or all of the tenants of the Building.

         24. Effect on Lease. These Building Rules are in addition to, and shall
not be construed to in any way modify or amend,  in whole or in part, the terms,
covenants,  agreements and conditions of the Lease.  Violation of these Building
Rules  constitutes  a failure to fully perform the  provisions of the Lease,  as
referred to in Section 15.1 - "Events of Default".

         25.  Non-Discriminatory  Enforcement.  Subject to the provisions of the
Lease (and the  provisions  of other  leases  with  respect  to other  tenants),
Landlord  shall use  reasonable  efforts to enforce  these  Building  Rules in a
non-discriminatory manner, but in no event shall Landlord have any liability for
any failure or refusal to do so (and Tenant's sole and exclusive  remedy for any
such failure or refusal  shall be  injunctive  relief  preventing  Landlord from
enforcing  any  of  the  Building   Rules  against   Tenant  in  a  manner  that
discriminates against Tenant).

         26.  Additional  and  Amended  Rules.  Landlord  reserves  the right to
rescind or amend these  Building  Rules  and/or  adopt any other and  reasonable
rules and regulations as in its judgment may from time to time be needed for the
safety,  care and  cleanliness of the Building and for the  preservation of good
order therein.
                                                          INITIALS:

                                                          Landlord ______
                                                          Tenant ______


<PAGE>





                                    EXHIBIT D

                        ATTACHED TO AND FORMING A PART OF
                                 LEASE AGREEMENT
                           DATED AS OF APRIL 16, 1998
                                     BETWEEN
                  SEAPORT CENTRE ASSOCIATES, LLC, AS LANDLORD,
                                       AND
                       PERCLOSE, INC., AS TENANT ("LEASE")


                           ADDITIONAL PROVISIONS RIDER



35.      ANNUAL COST OF LIVING ADJUSTMENTS TO BASE RENT.

         (a) The monthly Base Rent shall be adjusted annually,  effective on the
first  anniversary  of the  Commencement  Date  and on each  anniversary  of the
Commencement  Date thereafter (each an "Adjustment  Date"), to reflect increases
in the cost of living.  The adjustment  shall be calculated by  multiplying  the
monthly Base Rent for the year  immediately  preceding the Adjustment  Date (the
"Prior Period") by the percentage increase in the Consumer Price Index, measured
(using the same calendar  month for the comparing  and compared  Consumer  Price
Index) from (i) the last calendar  month for which the Consumer  Price Index was
published  at least  one  hundred  twenty  (120)  days  immediately  before  the
commencement  of the Prior  Period to (ii) the same  calendar  month which is at
least one hundred twenty (120) days  immediately  prior to the Adjustment  Date;
provided,  however,  that on each Adjustment Date the monthly Base Rent shall be
increased  by a minimum of three  percent (3%) per annum,  cumulative,  from the
Commencement Date or the prior Adjustment Date, as applicable,  and by a maximum
of six percent (6%) per annum,  cumulative,  from the  Commencement  Date or the
prior Adjustment Date, as applicable. The monthly Base Rent for each twelve (12)
month period after the first  Adjustment Date shall be the monthly Base Rent for
the Prior Period plus the increase  calculated in accordance  with the preceding
sentence.  In no event shall the monthly Base Rent following any such adjustment
be  less  than  the  monthly  Base  Rent in  effect  immediately  prior  to such
adjustment.

         (b) The term "Consumer Price Index" means the United States  Department
of  Labor's  Bureau  of  Labor  Statistics'  Consumer  Price  Index,  All  Urban
Consumers, All Items, San Francisco-Oakland-San  Jose, California (1982-84=100),
or the successor of such index.

         (c) If the Consumer Price Index is not published by the Bureau of Labor
Statistics or another  governmental agency for any month for which an adjustment
in the Consumer Price Index is to be measured,  then the foregoing  calculations
shall be made using the most closely  comparable  statistics  on the  purchasing
power of the consumer dollar as published by a responsible  financial  authority
selected by Landlord.

         (d) If the adjustment provided for in this Section has not been made by
any Adjustment Date,  Tenant shall continue to pay monthly Base Rent at the rate
applicable  to the Prior  Period.  Within  the  earlier  of (a) the later of (i)
twenty (20) days after  Tenant's  receipt of Landlord's  statement,  or (ii) the
first  (1st) day of the month when  Tenant's  next  installment  of Base Rent is
payable to  Landlord,  or (b)  thirty-one  (31) days after  Tenant's  receipt of
Landlord's  written  notice  of the  adjusted  Base  Rent  for the  then-current
Adjustment Date, Tenant shall pay to Landlord the shortfall between the old Base
Rent, as paid by Tenant to date for the then-current  Lease period,  and the new
Base Rent payable from the beginning of the  then-current  Lease period  through
the date of Landlord's notice. Thereafter during such Lease period, Tenant shall
pay monthly Base Rent at the new rate set forth in Landlord's notice.

36.      LETTER OF CREDIT.

         (a)  Tenant   shall   deliver  to  Landlord  a  clean,   unconditional,
irrevocable, transferable letter of credit (the "Letter of Credit") in form, and
issued by a financial  institution  ("Issuer")  satisfactory  to  Landlord.  The
Letter of Credit  shall be  provided  to  Landlord  as set forth in Section  (b)
below,  and  shall be in the  amount  of  $1,000,000.00,  name  Landlord  as the
beneficiary  thereunder,  and provide that draws thereunder will be honored upon
receipt  by Issuer  of a written  statement  signed  by an  authorized  agent of
Landlord  stating  that the person who is signing has the  authority  to sign on
behalf of Landlord  and that  Landlord is entitled to draw down on the Letter of
Credit. Landlord shall be entitled to draw the entire amount under the Letter of
Credit if either (i) Tenant does not deliver to Landlord a replacement letter of
credit from Issuer or another financial institution  satisfactory to Landlord in
the  amount  and form of the  initial  Letter of Credit no later  than one month
before the expiration date of the then existing Letter of Credit, or (ii) upon a
proposed  sale or lease of the  Building  Tenant  does  not  deliver  to the new
landlord a replacement Letter of Credit pursuant to the provisions of (d) below.
If Tenant is in default  under the Lease beyond any  applicable  notice and cure
period,  Landlord  shall be  entitled to draw under the Letter of Credit only an
amount equal to the amount of any monetary default as defined below (or, only if
partial draws are not permitted,  the entire amount of the Letter of Credit). As
used herein,  "monetary default" means any delinquent  installment of Base Rent,
Additional  Rent or Rent under this Lease (as and when  Tenant  fails to pay the
same beyond any applicable notice and cure period contained in this Lease), plus
any damages to which Landlord is entitled under the Lease.  Landlord agrees that
the Letter of Credit may also  provide for  partial  draws by  Landlord.  To the
extent not  applied by  Landlord  pursuant  to the  provisions  of the Lease any
amount  drawn under the Letter of Credit shall be held or applied by Landlord as
a Security Deposit, subject to the terms of Section 4 of this Lease.

         (b) The Letter of Credit  shall be issued  and  delivered  to  Landlord
within fifteen (15) days after complete  execution of this Lease by Landlord and
Tenant.  If Tenant  Fails to  deliver  to  Landlord  the  Letter of Credit  when
required, such failure shall constitute an Event of Default under the Lease.

         (c) If, and only if,  (x) there has been no Event of Default  under the
Lease  during the eighteen  (18) months  prior to Release  Date (as  hereinafter
defined) and (y) both (i)  Tenant's  publicly  traded  common stock has a market
value of at least  $250  million,  as  averaged  over the last  five [5] days of
public  trading of Tenant's  common  stock ending  thirty (30) days  immediately
prior to the Release Date, and (ii) during each of Tenant's four (4) most recent
accounting  quarters  immediately  prior to the Release Date Tenant has publicly
reported  positive net income  (before  federal and state income taxes) equal to
three (3) times the sum of (A) the Base Rent, and (B) the actual Additional Rent
(as such Base Rent and Additional Rent may from time to time change) for each of
the same four (4)  accounting  quarters for which net income is being  compared,
then when all of the preceding  conditions contained in this subsection (c) have
been satisfied (the "Release  Date"),  Landlord  shall,  within thirty (30) days
after the Release Date, return the Letter of Credit to Tenant.

         (d) If  Landlord  shall be holding  the  Letter of Credit as  security,
then,  in the event of a proposed  sale or lease of the  Building  by  Landlord,
Tenant will, upon ten (10) Business Days' notice,  at its sole cost and expense,
cause the issuing  bank to consent to the  assignment  or to issue a  substitute
letter of credit on  identical  terms  except for the stated  beneficiary,  from
either (i) the same  issuing  bank or (ii) a  national  money  center  bank with
shareholder's equity of at least $500,000,000, having a branch in San Francisco,
California,  naming the new landlord as the beneficiary thereof upon delivery by
Landlord of the then outstanding Letter of Credit.

37.      PARKING.

         (a) Tenant's  Parking Rights.  Landlord shall provide  Tenant,  without
charge or fee, on an unassigned and  non-exclusive  basis, for use by Tenant and
Tenant's  Representatives and Visitors, at the users' sole risk, one (1) parking
space in the Parking Facility  (including parking on the public street) for each
three hundred thirty-three (333) rentable square feet of space leased to Tenant.
The  parking  spaces to be made  available  to Tenant  hereunder  may  contain a
reasonable  mix of spaces for compact  cars and up to ten  percent  (10%) of the
unassigned  spaces may also be  designated  by Landlord  as  Building  visitors'
parking.

         (b)  Availability  of Parking  Spaces.  Landlord shall take  reasonable
actions to ensure the  availability of the parking spaces leased by Tenant,  but
Landlord  does not  guarantee  the  availability  of those  spaces  at all times
against the actions of other  tenants of the  Building  and users of the Parking
Facility. Access to the Parking Facility may, at Landlord's option, be regulated
by card, pass, bumper sticker, decal or other appropriate  identification issued
by Landlord.  Landlord retains the right to revoke the parking privileges of any
user of the Parking  Facility who violates the rules and  regulations  governing
use of the Parking  Facility  (and Tenant shall be  responsible  for causing any
employee of Tenant or other person using parking  spaces  allocated to Tenant to
comply with all parking rules and regulations).

         (c) Assignment and Subletting.  Notwithstanding  any other provision of
the Lease to the  contrary,  Tenant  shall not assign its rights to the  parking
spaces or any interest therein, or sublease or otherwise allow the use of all or
any part of the parking spaces to or by any other person, except either (i) to a
Permitted Transferee,  or (ii) with Landlord's prior written consent,  which may
be granted or withheld by Landlord in its sole  discretion.  In the event of any
separate  assignment  or  sublease of parking  space  rights that is approved by
Landlord,  Landlord shall be entitled to receive,  as additional Rent hereunder,
one hundred  percent (100%) of any profit  received by Tenant in connection with
such assignment or sublease of parking spaces.

         (d)  Condemnation,  Damage or  Destruction.  In the  event the  Parking
Facility is the subject of a Condemnation,  or is damaged or destroyed, and this
Lease is not  terminated,  and if in such event the available  number of parking
spaces in the Parking Facility is permanently  reduced,  then Tenant's rights to
use parking  spaces  hereunder  may, at the election of Landlord,  thereafter be
reduced in proportion to the reduction of the total number of parking  spaces in
the Parking Facility.  In such event,  Landlord reserves the right to reduce the
number of parking  spaces to which Tenant is entitled or to relocate some or all
of the parking  spaces to which Tenant is entitled to other areas in the Parking
Facility.

38.      RIGHT OF FIRST OFFER.

         (a) Provided that Perclose,  Inc. has not assigned this Lease or sublet
any or all of the  Premises  other  than to either (i) an  Affiliate,  or (ii) a
sublessee  of Building 26 pursuant  to the  provisions  of Section  14.7 of this
Lease (it being  intended  that all rights  pursuant to this  provision  are and
shall be personal to the original Tenant under this Lease and its Affiliates and
shall not be transferable or exercisable for the benefit of any Transferee), and
provided Tenant is not in default under this Lease beyond any applicable  notice
and cure  periods at the time of the  exercise  of any such right or at any time
thereafter  until delivery of possession of the space to Tenant,  and subject to
any and all rights of other  tenants in the Project  with  respect to such space
(including  renewal  and  extension  rights  and  rights of first  offer,  first
negotiation, first refusal or other expansion rights) existing as of the date of
this Lease,  and  Landlord's  right to initially  lease the Right of First Offer
Building,  Tenant  shall  have a  one-time  right  of first  offer to lease  the
following building: The two story building in the Project located at 500 Saginaw
Drive,  identified  as Building 24 (the  "Right of First  Offer  Building")  and
containing approximately 41,350 rentable square feet.

         (b) Such  right  of first  offer  (i) may only be  exercised  if a then
existing  tenant of the Right of First Offer  Building has elected not to extend
its lease or re-lease such space and (ii) may only be exercised  with respect to
the entire  Right of First Offer  Building  when  offered by Landlord  after the
initial leasing of the Right of First Offer Building. Tenant desires to have the
right to lease the Right of First Offer  Building  pursuant to the provisions of
this Section 38 only at a future date after  Landlord has initially  leased such
building to another tenant.  Notwithstanding any other provision of this Section
to the  contrary,  Landlord  shall  have the right to enter  into a lease with a
prospective  tenant  for the  Right of First  Offer  Building  under  any  terms
Landlord  desires.  If the Right of First Offer Building becomes available after
the  initial  leasing,  Landlord  shall offer to lease such Right of First Offer
Building to Tenant at the same  market rent and on the same terms that  Landlord
intends  to offer to other  prospective  tenants.  Tenant  shall  have  five (5)
Business Days following receipt of Landlord's offer with respect to the Right of
First Offer Building within which to notify Landlord in writing of its intention
to lease  such  Right of First  Offer  Building,  and such  notice,  if given by
Tenant,  shall constitute an acceptance of Landlord's terms for the lease of the
Right of First Offer  Building.  If Tenant  exercises such right of right offer,
the Right of First  Offer  Building  shall be leased by Tenant on the same terms
and  conditions as are contained in this Lease except for the economic and other
terms specifically set forth in Landlord's notice, and the parties shall execute
an amendment  to this Lease to include the Right of First Offer  Building in the
Premises  and  otherwise to provide for the leasing of such space on such terms.
If Tenant  fails so to exercise  Tenant's  right of first offer within such five
(5)  Business  Day period,  Landlord  may  thereafter  lease such space to other
prospective tenants.

         (c) If Tenant  does not lease the Right of First  Offer  Building  from
Landlord  when it is first  offered  to Tenant by  Landlord,  then this right of
first offer shall terminate and Tenant shall have no further rights to lease any
of the Right of First Offer Building.

39.      EXTENSION OPTION.

         Provided that Perclose, Inc., has not assigned this Lease or sublet any
or all of the Premises  other than to an Affiliate  (it being  intended that all
rights  pursuant to this  provision  are and shall be  personal to the  original
Tenant  under this Lease and its  Affiliates  and shall not be  transferable  or
exercisable  for the benefit of any  Transferee),  and provided Tenant is not in
default  under this Lease beyond any  applicable  notice and cure periods at the
time of  exercise  or at any time  thereafter  until the  beginning  of any such
extension of the Term, Tenant shall have the option (the "Extension  Option") to
extend the Term for one (1) additional consecutive period of five (5) years (the
"Extension Period"), by giving written notice to Landlord of the exercise of any
such  Extension  Option at least twelve (12) months,  but not more than eighteen
(18) months,  prior to the  expiration of the initial Term.  The exercise of any
Extension  Option by Tenant  shall be  irrevocable  and shall  cover the  entire
Premises leased by Tenant pursuant to this Lease.  Upon such exercise,  the term
of the Lease shall automatically be extended for the applicable Extension Period
without the execution of any further  instrument  by the parties;  provided that
Landlord and Tenant shall, if requested by either party, execute and acknowledge
an instrument  confirming  the exercise of the Extension  Option.  Any Extension
Option shall terminate if not exercised precisely in the manner provided herein.
Any extension of the Term shall be upon all the terms and  conditions  set forth
in this Lease and all Exhibits  thereto,  except that:  (i) Tenant shall have no
further option to extend the Term of the Lease,  other than as specifically  set
forth herein;  (ii) Landlord  shall not be obligated to contribute  funds toward
the cost of any remodeling,  renovation,  alteration or improvement  work in the
Premises;  and (iii) Base Rent for any such  Extension  Period shall be the then
Fair Market Base Rental (as defined  below) for the  Premises  for the space and
term involved, which shall be determined as set forth below.

                  (a) "Fair  Market Base  Rental"  shall mean the "fair  market"
Base Rent at the time or times in question for the applicable Building, based on
the prevailing  rentals then being charged to tenants in other buildings located
in the  general  vicinity  of the  Buildings,  which  buildings  being  used for
comparison  are  (i) of a type  similar  to the  applicable  Building  and  (ii)
comparable in size,  location,  quality and age as the  applicable  Building for
leases  with terms  equal to the  Extension  Period,  taking  into  account  the
creditworthiness  and financial strength of the tenant, the financial guaranties
provided by the tenant (if any), the value of market concessions  (including the
value of construction, renovation, moving and other allowances or rent credits),
the  desirability,  location  in the  building,  size and  quality of the space,
tenant finish allowance and/or tenant improvements, included services, operating
expenses and tax and expense stops or other  escalation  clauses,  and brokerage
commissions,  for the space in the Building for which Fair Market Base Rental is
being  determined and for comparable space in the buildings which are being used
for  comparison.  Fair Market Base Rental shall also reflect the then prevailing
rental  structure  for  comparable  buildings  in the  general  vicinity  of the
Property,  so that if, for example, at the time Fair Market Base Rental is being
determined  the  prevailing  rental  structure  for  comparable  space  and  for
comparable lease terms includes periodic rental adjustments or escalations, Fair
Market Base Rental shall reflect such rental structure.

                  (b) Landlord and Tenant shall  endeavor to agree upon the Fair
Market Base Rental. If they are unable to so agree within thirty (30) days after
receipt by  Landlord of Tenant's  notice of  exercise of the  Extension  Option,
Landlord and Tenant shall  mutually  select a licensed  real estate  broker.  If
Landlord and Tenant are unable to agree upon the name of a licensed  real estate
broker within such thirty (30) day period,  then within  fifteen (15) days after
the  expiration of the thirty (30) day period,  Landlord shall select a licensed
real estate broker,  and Tenant shall select a licensed real estate broker.  The
two (2)  licensed  real  estate  brokers  shall then  within  fifteen  (15) days
thereafter   mutually   select  a  third   licensed   real  estate  broker  (the
"Arbitrator").  All  licensed  real  estate  brokers  selected  pursuant  to the
provisions  of this  paragraph  must be actively  leasing  space  similar to the
Building in the  general  vicinity  of the  Project,  and have at least five (5)
years  experience in the leasing of space similar to the Building in the general
vicinity of the Project.  After selection of the broker or brokers in accordance
with  the  provisions  of  this  paragraph,  Landlord  shall  submit  Landlord's
determination  of Fair  Market  Base  Rental and Tenant  shall  submit  Tenant's
determination  of Fair Market Base Rental to such  broker,  or brokers,  at such
time or times and in such  manner as  Landlord  and  Tenant  shall  agree (or as
directed by the broker; or if Landlord and Tenant do not agree on one broker and
an Arbitrator is appointed,  then as directed by the Arbitrator, if Landlord and
Tenant do not  promptly  agree).  If  Landlord  and Tenant  have agreed upon one
broker,  the broker shall select either Landlord's or Tenant's  determination as
the Fair Market Base Rental, and such determination shall be binding on Landlord
and  Tenant.  If  Tenant's  determination  is  selected  as the Fair Market Base
Rental,  then  Landlord  shall  bear  all of the  broker's  cost  and  fees.  If
Landlord's determination is selected as the Fair Market Base Rental, then Tenant
shall bear all of the  broker's  cost and fees.  If Landlord and Tenant have not
agreed  upon  one  broker,  and  there  is an  Arbitrator  appointed,  then  the
Arbitrator shall select either Landlord's or Tenant's  determination as the Fair
Market Base  Rental,  and such  determination  shall be binding on Landlord  and
Tenant.  If Tenant's  determination  is selected as the Fair Market Base Rental,
then Landlord shall bear all costs and fees of all of the brokers (including the
Arbitrator).  If  Landlord's  determination  is selected as the Fair Market Base
Rental,  then Tenant  shall bear all of all costs and fees of all of the brokers
(including the Arbitrator). The broker or Arbitrator may select only between the
two (2)  determinations  of Fair Market Base Rental  submitted  by Landlord  and
Tenant,  and shall not have the right to average the two  determinations of Fair
Market  Base  Rental,  or to make any  determination  of Fair Market Base Rental
other than between the two determinations submitted by Landlord and Tenant.

                  (c) In the event the Fair Market Base Rental for any Extension
Period has not been  determined  at such time as Tenant is obligated to pay Base
Rent for such  Extension  Period,  Tenant  shall pay as Base Rent  pending  such
determination,  the Base Rent in effect for such space  immediately prior to the
Extension Period;  provided,  that upon the determination of the applicable Fair
Market Base Rental,  any shortage of Base Rent paid,  together  with interest at
the rate specified in the Lease, shall be paid to Landlord by Tenant.

                  (d) In no event  shall  the Base  Rent  during  any  Extension
Period be less than the Base Rent in effect  immediately prior to such Extension
Period.

                  (e) The term of this Lease,  whether consisting of the Initial
Term alone or the  Initial  Term as  extended  by any  Extension  Period (if any
Extension Option is exercised), is referred to in this Lease as the "Term."

40. LANDLORD'S IMPROVEMENTS.

         Notwithstanding  any provision in the Lease to the  contrary,  Landlord
shall, at Landlord's  sole cost and expense,  if required by applicable Law, (i)
install two (2) ramps to each Building  (unless  caused by Tenant adding any new
doors to the  Building,  in addition  to all doors  existing at the date of this
Lease),  and (ii) bring in to compliance  with the Americans  with  Disabilities
Act,  the Property  outside the  exterior of the  Building . Landlord  shall use
commercially  reasonable efforts to promptly complete such work. Any work to the
Building  required to be made by Landlord  to comply  with the  requirements  of
either (i) any Laws not in effect as of the  Commencement  Date or (ii) any Laws
in effect as of the  Commencement  Date as such  Laws may be  amended,  changed,
added to, interpreted or re-interpreted by applicable  governmental authority or
court decision,  or  administrative  ruling  subsequent to the Commencement Date
shall be included in Operating  Costs  pursuant to the provisions of Section 3.2
of the Lease.


                                                         INITIALS:

                                                         Landlord ______
                                                         Tenant ______


<TABLE> <S> <C>


<ARTICLE>                     5

                
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                              MAR-31-1999
<PERIOD-START>                                 APR-1-1998
<PERIOD-END>                                   JUN-30-1998
<CASH>                                         11,092
<SECURITIES>                                   19,247
<RECEIVABLES>                                   4,465
<ALLOWANCES>                                      316  
<INVENTORY>                                     2,126
<CURRENT-ASSETS>                               37,138
<PP&E>                                          5,136
<DEPRECIATION>                                  2,622
<TOTAL-ASSETS>                                 40,932
<CURRENT-LIABILITIES>                           3,409
<BONDS>                                             0
                               0
                                         0
<COMMON>                                           11
<OTHER-SE>                                     37,512
<TOTAL-LIABILITY-AND-EQUITY>                   40,932
<SALES>                                         8,364
<TOTAL-REVENUES>                                8,364
<CGS>                                           3,190
<TOTAL-COSTS>                                   3,190
<OTHER-EXPENSES>                                   39
<LOSS-PROVISION>                                    0
<INTEREST-EXPENSE>                                 13
<INCOME-PRETAX>                                   298
<INCOME-TAX>                                       15
<INCOME-CONTINUING>                               283
<DISCONTINUED>                                      0
<EXTRAORDINARY>                                     0
<CHANGES>                                           0
<NET-INCOME>                                      283
<EPS-PRIMARY>                                    0.03
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