title: Determination of the source of equine relaxin.
mesh_terms: D000818:Animals; D002369:Castration; D005260:Female; D006736:Horses; D010053:Ovary / Q000378:metabolism; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000097:blood; D012065:Relaxin / Q000097:blood*
chemical_list: D011374:Progesterone; D012065:Relaxin