AGREEMENT REGARDING JOINT FILINGJoint Filing Agreement • November 20th, 2006 • Efficacy Capital, Ltd. • Pharmaceutical preparations
The undersigned, Efficacy Capital Ltd., Efficacy Biotech Fund, L.P., Efficacy Biotech Fund Ltd., Efficacy Biotech Master Fund Ltd., Jon Faiz Kayyem and Mark Lappe, hereby agree and acknowledge that the information required by the Schedule 13D to which this Agreement is attached as an exhibit, is filed on behalf of each of them. The undersigned further agree that any amendments or supplements thereto shall also be filed on behalf of each of them.
