title: A comparative study of serum progesterone levels in pregnancy and in various types of pseudopregnancy in the rat.
mesh_terms: D000818:Animals; D005260:Female; D007044:Hysterectomy; D007774:Lactation; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000097:blood*; D011555:Pseudopregnancy; D051381:Rats; D013997:Time Factors
chemical_list: D011374:Progesterone