CHICAGO, April 2, 2012 (GLOBE NEWSWIRE) -- Immunomedics, Inc. (Nasdaq:IMMU), a biopharmaceutical company primarily focused on the development of monoclonal antibody-based products for the targeted treatment of cancer, autoimmune and other serious diseases, today reported the development of two bispecific, hexavalent antibodies for treating breast, pancreatic and other solid cancers.