The use of blood groups in the study of populations.
D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D001803:Blood Transfusion; D004899:Erythroblastosis, Fetal / Q000276:immunology; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D005826:Genetics, Medical; D005828:Genetics, Population; D006648:Histocompatibility; D006801:Humans; D007114:Immunization; D007519:Isoantigens; D008967:Molecular Biology; D009154:Mutation; D011247:Pregnancy; D012204:Rh-Hr Blood-Group System
D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D007519:Isoantigens; D012204:Rh-Hr Blood-Group System