Results of Operations
Revenue

[[Image Removed]]          [[Image Removed]]      [[Image Removed]]     [[Image Removed]]
                                               Year Ended December 31,
                                   2007                  2006                  2005
Revenue from
collaborative
agreements:
HIV/AIDS vaccine - NIAID   $        5,389,000     $       1,548,000     $               -
Heart failure - Celladon            3,982,000             4,220,000               777,000
HIV/AIDS vaccine - IAVI               309,000             2,262,000             5,588,000
Huntington's                           52,000                47,000               315,000
disease - Sirna
Other                                       -                37,000               194,000
Other revenues:
License agreements - AMT              600,000             1,750,000                     -
Total revenue              $       10,332,000     $       9,864,000     $       6,874,000