Suppressor cells may help prevent fetal rejection.
D000941:Antigens; D005260:Female; D005333:Fetus / Q000276:immunology*; D006801:Humans; D007165:Immunosuppression Therapy; D007231:Infant, Newborn; D008214:Lymphocytes / Q000276:immunology*; D008297:Male; D008431:Maternal-Fetal Exchange; D010298:Parity; D011247:Pregnancy; D011374:Progesterone / Q000276:immunology
D000941:Antigens; D011374:Progesterone