SOUTH SAN FRANCISCO, Calif.--(BUSINESS WIRE)--Cell Genesys, Inc. (Nasdaq:CEGE) today announced that Stephen A. Sherwin, M.D., chairman and chief executive officer, and Sharon E. Tetlow, senior vice president and chief financial officer of Cell Genesys, will host a conference call relating to the company’s first quarter financial results that will be broadcast live over the internet on Thursday, May 1, 2008 at 2:00 p.m. PT/ 5:00 p.m. ET.