title: QUANTITATIVE STUDIES ON THE EFFECT OF THE SUCKLING STIMULUS ON BLASTOCYST IMPLANTATION IN THE RAT.
mesh_terms: D001942:Breast Feeding; D010064:Embryo Implantation; D005260:Female; D006801:Humans; D007774:Lactation; D010063:Ovum; D010600:Pharmacology; D010828:Physiology, Comparative; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone; D051381:Rats; D012106:Research
chemical_list: D011374:Progesterone
keywords: EXPERIMENTAL LAB STUDY; LACTATION; OVUM; PHARMACOLOGY; PHYSIOLOGY, COMPARATIVE; PREGNANCY; PREGNANCY, ANIMAL; PROGESTERONE; RATS