<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS INCLUDED IN THE REGISTRANT'S QUARTERLY REPORT ON FORM 10-Q
FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 10,408,434
<SECURITIES> 4,797,394
<RECEIVABLES> 324,461
<ALLOWANCES> 0
<INVENTORY> 16,514
<CURRENT-ASSETS> 14,372,270
<PP&E> 6,769,812
<DEPRECIATION> 5,985,969
<TOTAL-ASSETS> 17,634,832
<CURRENT-LIABILITIES> 1,439,940
<BONDS> 0
0
22,962,211
<COMMON> 90,549
<OTHER-SE> 73,687,928
<TOTAL-LIABILITY-AND-EQUITY> 17,634,832
<SALES> 0
<TOTAL-REVENUES> 687,201
<CGS> 0
<TOTAL-COSTS> 4,781,453
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> (4,094,252)
<INCOME-TAX> 0
<INCOME-CONTINUING> (4,094,252)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (4,094,252)
<EPS-BASIC> (0.83)
<EPS-DILUTED> (0.83)
</TABLE>