title: Blood vitamin E, selenium and glutathione peroxidase concentrations in heifers fed either on grass or on winter feed.
mesh_terms: D000821:Animal Feed; D000818:Animals; D002417:Cattle / Q000097:blood*; D005260:Female; D005979:Glutathione Peroxidase / Q000097:blood*; D011247:Pregnancy; D012643:Selenium / Q000097:blood*; D014810:Vitamin E / Q000097:blood*
chemical_list: D014810:Vitamin E; D005979:Glutathione Peroxidase; D012643:Selenium