BERKELEY, Calif., Nov. 3, 2011 (GLOBE NEWSWIRE) -- XOMA Ltd. (Nasdaq:XOMA), a leader in the discovery and development of antibody therapeutics, announced that the company will host a webcast conference call on Wednesday, November 9, 2011 at 4:30 p.m. Eastern time to discuss third quarter 2011 financial results and provide a general business update.