title: Elements of blood group nomenclature with special reference to the Rh-Hr blood types.
mesh_terms: D001789:Blood Group Antigens / Q000145:classification*; D006801:Humans; D012204:Rh-Hr Blood-Group System; D009626:Terminology as Topic
chemical_list: D001789:Blood Group Antigens; D012204:Rh-Hr Blood-Group System