Apparent violation of "Landsteiner's law".
D000017:ABO Blood-Group System / Q000032:analysis*; D000917:Antibody Formation; D000939:Epitopes; D005260:Female; D005826:Genetics, Medical; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000097:blood*; D007518:Isoantibodies / Q000032:analysis*
D000017:ABO Blood-Group System; D000939:Epitopes; D007518:Isoantibodies