title: Naturally occurring ABO antibodies in Kanpur (U.P.).
mesh_terms: D000017:ABO Blood-Group System / Q000276:immunology*; D006801:Humans; D007194:India; D007518:Isoantibodies / Q000276:immunology*
chemical_list: D000017:ABO Blood-Group System; D007518:Isoantibodies