title: A possible correlation between antigens of the HL-A system and P system.
mesh_terms: D000941:Antigens; D000961:Antilymphocyte Serum; D001789:Blood Group Antigens; D004912:Erythrocytes / Q000276:immunology; D006801:Humans; D007106:Immune Sera; D007962:Leukocytes / Q000276:immunology; D012204:Rh-Hr Blood-Group System; D014181:Transplantation Immunology
chemical_list: D000941:Antigens; D000961:Antilymphocyte Serum; D001789:Blood Group Antigens; D007106:Immune Sera; D012204:Rh-Hr Blood-Group System