title: Selenium kidney/liver ratios in rock squirrel populations from grassland and pinyon-juniper ecosystems.
mesh_terms: D000531:Altitude; D000818:Animals; D004463:Ecology; D007668:Kidney / Q000032:analysis*; D008099:Liver / Q000032:analysis*; D012589:Sciuridae; D012643:Selenium / Q000032:analysis*
chemical_list: D012643:Selenium