title: Serum relaxin concentrations in pigs with parturition delayed by progesterone administration.
mesh_terms: D000818:Animals; D005260:Female; D005865:Gestational Age / Q000187:drug effects*; D007774:Lactation / Q000187:drug effects; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000187:drug effects*; D011374:Progesterone / Q000494:pharmacology*; D012065:Relaxin / Q000097:blood*; D013552:Swine
chemical_list: D011374:Progesterone; D012065:Relaxin