title: Some observations on the T, Tn and Sda antigens and the antibodies that define them.
mesh_terms: D000017:ABO Blood-Group System; D000906:Antibodies; D000941:Antigens; D001665:Binding Sites; D001789:Blood Group Antigens; D010450:Endopeptidases / Q000494:pharmacology; D004912:Erythrocytes / Q000276:immunology*; D006384:Hemagglutination; D006386:Hemagglutination Tests; D006801:Humans; D010206:Papain / Q000494:pharmacology; D012204:Rh-Hr Blood-Group System; D013296:Streptococcus pneumoniae / Q000276:immunology
chemical_list: D000017:ABO Blood-Group System; D000906:Antibodies; D000941:Antigens; D001789:Blood Group Antigens; D012204:Rh-Hr Blood-Group System; D010450:Endopeptidases; D010206:Papain