BERKELEY, Calif., Dec. 13, 2012 (GLOBE NEWSWIRE) -- XOMA Corporation (Nasdaq:XOMA), a leader in the discovery and development of therapeutic antibodies, today announced that Joseph M. Limber has been appointed to its Board of Directors. Mr. Limber brings over 30 years of unparalleled biotechnology and corporate leadership experience to XOMA’s Board, including from his current position as President and Chief Executive Officer of Prometheus Laboratories, a Nestlé Health Science company.