<ARTICLE>                     5
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES  EXCHANGE ACT
OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1998.
</LEGEND>
<MULTIPLIER>                                   1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                              DEC-31-1998
<PERIOD-START>                                 JAN-01-1998
<PERIOD-END>                                   JUN-30-1998
<CASH>                                         5,669
<SECURITIES>                                   15,824
<RECEIVABLES>                                  108
<ALLOWANCES>                                   0
<INVENTORY>                                    0
<CURRENT-ASSETS>                               21,919
<PP&E>                                         7,204
<DEPRECIATION>                                 3,007
<TOTAL-ASSETS>                                 27,033
<CURRENT-LIABILITIES>                          2,354
<BONDS>                                        0
<PREFERRED-MANDATORY>                          0
<PREFERRED>                                    0
<COMMON>                                       74,587
<OTHER-SE>                                     (50,102)
<TOTAL-LIABILITY-AND-EQUITY>                   27,033
<SALES>                                        0
<TOTAL-REVENUES>                               1,505
<CGS>                                          0
<TOTAL-COSTS>                                  0
<OTHER-EXPENSES>                               7,914
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             0
<INCOME-PRETAX>                                (2,573)
<INCOME-TAX>                                   0
<INCOME-CONTINUING>                            (2,573)
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   (2,573)
<EPS-PRIMARY>                                  (0.31)
<EPS-DILUTED>                                  (0.31)