title: [Measurement of the sodium ion concentration in biological fluids].
mesh_terms: D000818:Animals; D007477:Ions; D010783:Photometry; D011199:Potentiometry; D012417:Rumen; D012756:Sheep; D012964:Sodium / Q000032:analysis*
chemical_list: D007477:Ions; D012964:Sodium
vernacular_title: Izmerenie kontsentratsii ionov natriia v biologicheskikh zhidkostiakh