SAN DIEGO, June 27, 2011 (GLOBE NEWSWIRE) -- XOMA Ltd. (Nasdaq: XOMA), a leader in the discovery and development of therapeutic antibodies, announced the first presentation of results from its discovery of two new classes of fully human monoclonal antibodies that activate or sensitize the insulin receptor in vivo, each representing a distinct new therapeutic approach to the treatment of patients with diabetes. The data were presented at the American Diabetes Association 71st Scientific Sessions in San Diego.