<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED BALANCE SHEETS AND CONDENSED CONSOLIDATED STATEMENTS OF
OPERATIONS CONTAINED IN THE COMPANY'S QUARTERLY REPORT ON FORM 10-Q FOR
THE QUARTER ENDED SEPTEMBER 30, 1996 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS AND THE NOTE THERETO
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               JUN-30-1996
<CASH>                                          53,105
<SECURITIES>                                    22,971
<RECEIVABLES>                                    3,611
<ALLOWANCES>                                         0
<INVENTORY>                                      1,729
<CURRENT-ASSETS>                                84,360
<PP&E>                                          25,803
<DEPRECIATION>                                   7,882
<TOTAL-ASSETS>                                 103,294
<CURRENT-LIABILITIES>                            9,052
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                     26,586
<COMMON>                                       142,426
<OTHER-SE>                                    (82,558)
<TOTAL-LIABILITY-AND-EQUITY>                   103,294
<SALES>                                          1,505
<TOTAL-REVENUES>                                19,907
<CGS>                                            1,384
<TOTAL-COSTS>                                    1,134
<OTHER-EXPENSES>                                19,011
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 354
<INCOME-PRETAX>                                      0
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (6,147)
<EPS-PRIMARY>                                   (0.38)
<EPS-DILUTED>                                        0