<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENTS OF OPERATIONS AND BALANCE SHEETS FOR THE SIX MONTHS ENDED JUNE 30,
1998, AND IS QUALFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</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>                                          10,146
<SECURITIES>                                    33,524
<RECEIVABLES>                                    1,189
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                44,859
<PP&E>                                           6,571
<DEPRECIATION>                                   4,626
<TOTAL-ASSETS>                                  48,187
<CURRENT-LIABILITIES>                            2,806
<BONDS>                                          1,000
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           158
<OTHER-SE>                                      44,224
<TOTAL-LIABILITY-AND-EQUITY>                    48,187
<SALES>                                              0
<TOTAL-REVENUES>                                 3,292
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                 6,153
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  85
<INCOME-PRETAX>                                (3,656)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                            (3,656)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (3,656)
<EPS-PRIMARY>                                    (.23)
<EPS-DILUTED>                                    (.23)