title: The fetus and birth. Introduction: a historical perspective.
mesh_terms: D000818:Animals; D002417:Cattle; D005260:Female; D005333:Fetus / Q000502:physiology*; D049673:History, 20th Century; D006801:Humans; D007743:Labor, Obstetric; D011247:Pregnancy; D012106:Research / Q000266:history