title: Selenium and cancer: meaning of serum selenium levels.
mesh_terms: D000818:Animals; D004032:Diet; D006801:Humans; D009369:Neoplasms / Q000517:prevention & control*; D009374:Neoplasms, Experimental / Q000517:prevention & control; D012643:Selenium / Q000008:administration & dosage / Q000097:blood*; D012645:Selenomethionine / Q000378:metabolism
chemical_list: D012645:Selenomethionine; D012643:Selenium