Altered profiles of estradiol and progesterone associated with prolonged estrous cycles and persistent vaginal cornification in aging C57BL/6J mice.
D000375:Aging; D000818:Animals; D004958:Estradiol / Q000097:blood*; D004971:Estrus; D005260:Female; D051379:Mice; D008810:Mice, Inbred C57BL / Q000502:physiology; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*; D012377:Rodentia / Q000502:physiology*; D014621:Vagina / Q000166:cytology*
D011374:Progesterone; D004958:Estradiol