<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                           5,189
<SECURITIES>                                    12,903
<RECEIVABLES>                                        5
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                18,400
<PP&E>                                           2,886
<DEPRECIATION>                                   2,015
<TOTAL-ASSETS>                                  19,362
<CURRENT-LIABILITIES>                            5,520
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                           0
<TOTAL-LIABILITY-AND-EQUITY>                    19,362
<SALES>                                              0
<TOTAL-REVENUES>                                 2,357
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                20,148
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                               (17,228)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (17,228)
<EPS-PRIMARY>                                   (1.86)
<EPS-DILUTED>                                   (1.86)