Transfer of steroids between mother and fetus.
D004967:Estrogens; D005260:Female; D005333:Fetus; D006801:Humans; D008431:Maternal-Fetal Exchange; D009035:Mothers; D011247:Pregnancy; D013256:Steroids
D004967:Estrogens; D013256:Steroids
ESTROGENS; MATERNAL-FETAL EXCHANGE