ABH secretor status of the fetus: a genetic marker identifiable by amniocentesis.
D000017:ABO Blood-Group System; D000649:Amniocentesis; D000653:Amniotic Fluid / Q000276:immunology*; D000941:Antigens; D001789:Blood Group Antigens; D005260:Female; D006648:Histocompatibility; D006801:Humans; D011247:Pregnancy; D012463:Saliva / Q000276:immunology
D000017:ABO Blood-Group System; D000941:Antigens; D001789:Blood Group Antigens