title: Monoclonal IgM kappa with rheumatoid factor activity and cryoprecipitability identified only by immunofixation electrophoresis after 2-mercaptoethanol treatment.
mesh_terms: D000368:Aged; D000911:Antibodies, Monoclonal / Q000032:analysis*; D003450:Cryoglobulins / Q000032:analysis*; D006801:Humans; D007122:Immunoelectrophoresis / Q000379:methods*; D007075:Immunoglobulin M / Q000032:analysis*; D007145:Immunoglobulin kappa-Chains / Q000032:analysis*; D008297:Male; D008623:Mercaptoethanol / Q000494:pharmacology*; D012217:Rheumatoid Factor / Q000032:analysis*; D008258:Waldenstrom Macroglobulinemia / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal; D003450:Cryoglobulins; D007075:Immunoglobulin M; D007145:Immunoglobulin kappa-Chains; D008623:Mercaptoethanol; D012217:Rheumatoid Factor