title: Age-related temporal changes of levels of circulating progesterone in repeatedly pseudopregnant rats.
mesh_terms: D000375:Aging; D000818:Animals; D005260:Female; D011374:Progesterone / Q000097:blood*; D011555:Pseudopregnancy / Q000097:blood*; D051381:Rats; D013223:Statistics as Topic
chemical_list: D011374:Progesterone