Abstract: A superoxide dismutase originally found in extracellular body fluids and therefore termed extracellular superoxide dismutase (EC-SOD) is prepared by growing a cell line, preferably of mammalian origin, producing EC-SOD and recovering the EC-SOD secreted from the cells or by inserting a DNA sequence encoding EC-SOD into a suitable vector, introducing the recombinant vector into a host cell, growing the cell and recovering the EC-SOD produced.EC-SOD may be used for the prophylaxis or treatment of diseases or disorders associated with the presence or formation of superoxide radicals.

Abstract: Monoclonal antibodies produced after immunization with a synthetic antigen bearing the structure Gal (beta 1-3) GalNac beta-glycosidically linked to a carrier moiety are useful as carcinoma markers. Radioimmunoimaging agents are described in which such antibodies are tagged with radiometals or radiohalogens. Radiolabeled monoclonal antibody 155H.7, elicited by this antigen, rapidly localizes and persists in tumor tissues, demonstrating its utility as a tumor imaging agent.