title: Reproductive aging in C57BL/6J mice: plasma progesterone, viable embryos and resorption frequency throughout pregnancy.
mesh_terms: D000818:Animals; D004622:Embryo, Mammalian / Q000502:physiology; D005260:Female; D005313:Fetal Death; D051379:Mice; D008810:Mice, Inbred C57BL; D009929:Organ Size; D010920:Placenta / Q000502:physiology; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000097:blood*; D014599:Uterus / Q000502:physiology
chemical_list: D011374:Progesterone