MIAMI BEACH, Fla., June 13, 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 initial clinical experience with a combination of epratuzumab, the Company’s humanized anti-CD22 antibody, labeled with the radioisotope, yttrium-90 (90Y), and veltuzumab, the Company’s humanized anti-CD20 antibody, in patients with relapsed aggressive non-Hodgkin lymphoma (NHL).