Advancement of behavioral estrus by subcutaneous injection of progesterone in the 4-day cyclic rat.
D000818:Animals; D004357:Drug Synergism; D004967:Estrogens / Q000502:physiology; D004971:Estrus; D005260:Female; D011247:Pregnancy; D011374:Progesterone / Q000008:administration & dosage / Q000494:pharmacology* / Q000502:physiology; D051381:Rats; D012726:Sexual Behavior, Animal / Q000187:drug effects; D013997:Time Factors
D004967:Estrogens; D011374:Progesterone