title: Comparison of serum progesterone, 20 alpha-dihydroprogesterone, and estradiol-17 beta in pregnant and pseudopregnant rabbits: evidence for postimplantation recognition of pregnancy.
mesh_terms: D004092:20-alpha-Dihydroprogesterone / Q000097:blood*; D000818:Animals; D047108:Embryonic Development; D004958:Estradiol / Q000097:blood*; D005260:Female; D007700:Kinetics; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000031:analogs & derivatives* / Q000097:blood*; D011555:Pseudopregnancy / Q000097:blood*; D011817:Rabbits
chemical_list: D004092:20-alpha-Dihydroprogesterone; D011374:Progesterone; D004958:Estradiol