title: Elemental isotopic abundance determinations of magnesium in biological materials by secondary ion mass spectrometry.
mesh_terms: D006801:Humans; D007554:Isotopes / Q000032:analysis; D008274:Magnesium / Q000097:blood* / Q000652:urine; D013058:Mass Spectrometry / Q000379:methods
chemical_list: D007554:Isotopes; D008274:Magnesium