title: Pregnancy diagnosis in sows based on serum oestrone sulphate concentration.
mesh_terms: D000818:Animals; D004970:Estrone / Q000031:analogs & derivatives* / Q000097:blood; D005260:Female; D011247:Pregnancy; D011258:Pregnancy Tests / Q000662:veterinary*; D011863:Radioimmunoassay; D013552:Swine / Q000502:physiology*
chemical_list: D004970:Estrone; C017296:estrone sulfate