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<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<S> <C> <C> <C>
<PERIOD-TYPE> YEAR YEAR YEAR
<FISCAL-YEAR-END> DEC-31-1999 DEC-31-1998 DEC-31-1997
<PERIOD-START> JAN-01-1999 JAN-01-1998 JAN-01-1997
<PERIOD-END> DEC-31-1999 DEC-31-1998 DEC-31-1997
<CASH> 1,821,945 17,499,487 0
<SECURITIES> 5,986,918 0 0
<RECEIVABLES> 319,051 0 0
<ALLOWANCES> 0 0 0
<INVENTORY> 0 0 0
<CURRENT-ASSETS> 8,518,662 17,617,559 0
<PP&E> 2,219,435 1,580,949 0
<DEPRECIATION> (1,209,589) (715,278) 0
<TOTAL-ASSETS> 9,673,601 18,608,230 0
<CURRENT-LIABILITIES> 1,111,226 792,691 0
<BONDS> 0 0 0
0 0 0
31,476,099 31,476,099 0
<COMMON> 6,929 6,548 0
<OTHER-SE> (23,020,653) (14,146,617) 0
<TOTAL-LIABILITY-AND-EQUITY> 9,673,601 18,608,230 0
<SALES> 468,220 85,450 327,780
<TOTAL-REVENUES> 468,220 85,450 327,780
<CGS> 0 0 0
<TOTAL-COSTS> 0 0 0
<OTHER-EXPENSES> (9,986,010) (5,992,813) (5,470,334)
<LOSS-PROVISION> 0 0 0
<INTEREST-EXPENSE> (76,128) (121,946) (29,239)
<INCOME-PRETAX> (8,967,915) (5,562,383) (5,055,249)
<INCOME-TAX> 0 0 0
<INCOME-CONTINUING> (8,967,915) (5,562,383) (5,055,249)
<DISCONTINUED> 0 0 0
<EXTRAORDINARY> 0 0 0
<CHANGES> 0 0 0
<NET-INCOME> (8,967,915) (5,562,383) (5,055,249)
<EPS-BASIC> (1.65) (1.16) (1.14)
<EPS-DILUTED> (1.65) (1.16) (1.14)
</TABLE>
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