Maternal Rh-immunization.
D000017:ABO Blood-Group System; D000917:Antibody Formation; D004899:Erythroblastosis, Fetal / Q000209:etiology*; D005260:Female; D005826:Genetics, Medical; D006801:Humans; D008297:Male; D011247:Pregnancy; D012204:Rh-Hr Blood-Group System
D000017:ABO Blood-Group System; D012204:Rh-Hr Blood-Group System