[Diagnosis and treatment of colorectal cancer using monoclonal antibodies]

The clinical usefulness of monoclonal antibodies was discussed from the viewpoint of serodiagnosis, immunohistochemistry, radio immunodetection and therapy. Monoclonal antibodies against carcinoembryonic antigen (CEA) were shown to be more beneficial than polyclonal antibodies. Carbohydrate antigens such as CA 19-9 or CA 50 were also available as tumor markers of colorectal cancer to a certain extent.