title: Blood selenium levels of sheep in some districts of the Northern Orange Free State: the Bultfontein area.
abstract: Blood selenium levels of apparantly healthy, adult sheep from the Bultfontein area, as determined by neutron activation, varied between 0,165 and 0,500 micrograms/ml. Due to the absence of anaemia, a symptom which could be taken as one of the earliest signs of chronic selenosis, these values suggest the intake of high but non-toxic amounts of selenium.
mesh_terms: D000818:Animals; D012643:Selenium / Q000097:blood*; D012756:Sheep / Q000097:blood*; D013019:South Africa
chemical_list: D012643:Selenium