Reproductive decline in aged female rats.
D000375:Aging; D000818:Animals; D003656:Decidua; D004958:Estradiol / Q000502:physiology; D005260:Female; D007962:Leukocytes; D010060:Ovulation; D010063:Ovum / Q000166:cytology; D011247:Pregnancy; D011374:Progesterone / Q000502:physiology; D051381:Rats; D012098:Reproduction
D011374:Progesterone; D004958:Estradiol