title: Blood selenium of sheep in some districts of the Northern Orange Free State: a preliminary report.
abstract: Blood selenium concentrations of clinically healthy sheep were determined using a neutron activation technique. Although the number of samples were relatively small, the selenium concentration in the blood of sheep in the Kroonstad district appeared to be fairly normal. In the Bethlehem and Fouriesburg districts on the other hand, the blood selenium levels indicated the possible appearance of selenium responsive diseases.
mesh_terms: D000818:Animals; D012643:Selenium / Q000097:blood*; D012756:Sheep / Q000097:blood*
chemical_list: D012643:Selenium