EX-2 4 a2078996zex-2.htm EXHIBIT 2
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EXHIBIT 2

TRANSACTIONS IN THE STOCK BY THE REPORTING PERSONS
DURING THE PAST SIXTY DAYS

Transaction Date
   By
   For the Account of
   PreConversion
Preferred
   Conversion Rate
   Post-Conversion
Common
   Type of Transaction
4/24/02   Partners   BVF   510,000   1:1.62   826,200   Conversion
4/24/02   Partners   ILL10   117,000   1:1.62   189,540   Conversion
4/24/02   Partners   BVF2   638,000   1:1.62   1,033,560   Conversion


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EXHIBIT 2