The role of the fetus and placenta in maintenance of plasma progesterone.
D005260:Female; D005333:Fetus / Q000502:physiology*; D006801:Humans; D010920:Placenta / Q000378:metabolism*; D011247:Pregnancy; D011374:Progesterone / Q000096:biosynthesis* / Q000097:blood*
D011374:Progesterone