<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM (A) AUDITED
FINANCIAL STATEMENTS FOR THE YEAR ENDED DECEMBER 31, 1995 AND UNAUDITED
FINANCIAL STATEMENTS FOR THE QUARTER ENDED MARCH 31, 1996 AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH (B) REGISTRATION STATEMENT ON FORM S-1.
</LEGEND>


<MULTIPLIER> 1,000
       
                                                  
<PERIOD-TYPE>                   YEAR                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1995             MAR-31-1996
<PERIOD-START>                             JAN-01-1995             JAN-01-1996
<PERIOD-END>                               DEC-31-1995             MAR-31-1996
<CASH>                                             468                     310
<SECURITIES>                                     11024                    9343
<RECEIVABLES>                                      815                     783
<ALLOWANCES>                                         0                       0
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                                 12409                   10539
<PP&E>                                            5428                    5572
<DEPRECIATION>                                    3418                    3686
<TOTAL-ASSETS>                                   14455                   12461
<CURRENT-LIABILITIES>                             1040                     889
<BONDS>                                           1701                    1382
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                         47359                   47400
<OTHER-SE>                                      (35645)                 (37210)
<TOTAL-LIABILITY-AND-EQUITY>                     14455                   12461
<SALES>                                              0                       0
<TOTAL-REVENUES>                                  3001                     783
<CGS>                                                0                       0
<TOTAL-COSTS>                                     8322                    1895
<OTHER-EXPENSES>                                  1976                     503
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                 322                      55
<INCOME-PRETAX>                                  (7086)                  (1531)
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                              (7086)                  (1531)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                     (7086)                  (1531)
<EPS-PRIMARY>                                    (0.55)                  (0.10)
<EPS-DILUTED>                                    (0.55)                  (0.10)