title: Defective synthesis of IgM antibodies in macroglobulinemia.
mesh_terms: D000818:Animals; D000906:Antibodies; D000917:Antibody Formation; D000937:Antigen-Antibody Reactions; D000941:Antigens; D002002:Brucella / Q000276:immunology; D004912:Erythrocytes / Q000276:immunology; D006801:Humans; D007075:Immunoglobulin M; D012756:Sheep; D008258:Waldenstrom Macroglobulinemia / Q000276:immunology*
chemical_list: D000906:Antibodies; D000941:Antigens; D007075:Immunoglobulin M