<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM (A) THE
QUARTERLY REPORT ON FORM 10-Q FOR THE NINE MONTH PERIOD ENDED SEPTEMBER 30,
1996
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH (B) FINANCIAL STATEMENTS.
</LEGEND>
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               SEP-30-1996
<CASH>                                      27,336,831
<SECURITIES>                                         0
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                            27,873,944
<PP&E>                                       6,836,470
<DEPRECIATION>                             (5,541,638)
<TOTAL-ASSETS>                              29,168,776
<CURRENT-LIABILITIES>                        8,586,914
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        14,814
<OTHER-SE>                                  20,567,048
<TOTAL-LIABILITY-AND-EQUITY>                29,168,776
<SALES>                                              0
<TOTAL-REVENUES>                             1,897,135
<CGS>                                                0
<TOTAL-COSTS>                               11,622,424
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                            (8,903,380)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                        (8,903,380)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               (8,903,380)
<EPS-PRIMARY>                                   (0.65)
<EPS-DILUTED>                                   (0.65)