<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONDENSED
BALANCE SHEETS AND SUMMARY OF OPERATIONS AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FORM 10Q FOR THE QUARTER ENDED JUNE 30, 1997
</LEGEND>
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                      14,635,028
<SECURITIES>                                         0
<RECEIVABLES>                                    3,049
<ALLOWANCES>                                       710
<INVENTORY>                                    254,705
<CURRENT-ASSETS>                            15,045,961
<PP&E>                                       3,904,939
<DEPRECIATION>                               2,297,932
<TOTAL-ASSETS>                              16,669,809
<CURRENT-LIABILITIES>                          643,395
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                    66,489,565
<OTHER-SE>                                 (50,466,173)
<TOTAL-LIABILITY-AND-EQUITY>                16,669,809
<SALES>                                         11,403
<TOTAL-REVENUES>                                11,403
<CGS>                                          679,292
<TOTAL-COSTS>                                  679,292
<OTHER-EXPENSES>                             1,760,617
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                             (2,204,248)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                         (2,204,248)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                (2,204,248)
<EPS-PRIMARY>                                    (0.09)
<EPS-DILUTED>                                        0