In vitro secretion of progestins: changes dependent on the postovulatory age of the ovaries.
D000818:Animals; D005260:Female; D066298:In Vitro Techniques; D010053:Ovary / Q000378:metabolism*; D010060:Ovulation; D011374:Progesterone / Q000378:metabolism*; D011555:Pseudopregnancy; D051381:Rats; D013997:Time Factors
D011374:Progesterone