Systems of life No 109. Setting up the systems-9.
D004622:Embryo, Mammalian / Q000502:physiology*; D005260:Female; D005333:Fetus / Q000502:physiology*; D006801:Humans; D010920:Placenta / Q000502:physiology*; D011247:Pregnancy; D014470:Umbilical Cord / Q000502:physiology*