<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-Q
FOR THE PERIOD ENDED JUNE 30, 1997 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                       4,761,957
<SECURITIES>                                 8,393,008
<RECEIVABLES>                                2,524,930
<ALLOWANCES>                                         0
<INVENTORY>                                     11,045
<CURRENT-ASSETS>                            15,858,872
<PP&E>                                       7,294,804
<DEPRECIATION>                               2,345,307
<TOTAL-ASSETS>                              25,075,412
<CURRENT-LIABILITIES>                        2,663,936
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         7,966
<OTHER-SE>                                  21,667,825
<TOTAL-LIABILITY-AND-EQUITY>                25,075,412
<SALES>                                        450,200
<TOTAL-REVENUES>                             1,193,919
<CGS>                                          140,165
<TOTAL-COSTS>                                  140,165
<OTHER-EXPENSES>                             4,265,176
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                             (3,086,138)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                         (3,086,138)
<DISCONTINUED>                                 150,486
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                (2,935,652)
<EPS-PRIMARY>                                     (.40)
<EPS-DILUTED>                                     (.40)