[Research on the placental passage of fetal blood elements].
D000818:Animals; D005260:Female; D005312:Fetal Blood; D005333:Fetus / Q000097:blood*; D006801:Humans; D008322:Mammals; D010920:Placenta / Q000502:physiology*; D011247:Pregnancy; D012106:Research
FETUS/blood; PLACENTA/physiology