PROGESTINS AND THE OVARY.
D000375:Aging; D000818:Animals; D003270:Contraceptive Agents; D003276:Contraceptives, Oral; D005260:Female; D005853:Geriatrics; D006801:Humans; D008593:Menopause; D009640:Norethindrone; D010053:Ovary; D010600:Pharmacology; D011200:Poultry; D011247:Pregnancy; D011372:Progestins; D012106:Research
D003270:Contraceptive Agents; D003276:Contraceptives, Oral; D011372:Progestins; D009640:Norethindrone
AGING; CONTRACEPTIVES, ORAL; EXPERIMENTAL LAB STUDY; GERIATRICS; MENOPAUSE; NORETHINDRONE; OVARY; PHARMACOLOGY; POULTRY; PREGNANCY