title: Spectrophotometric microdetermination of copper in biological samples by an improved version of Matsuba and Takahashi's method.
mesh_terms: D001842:Bone and Bones / Q000032:analysis*; D003300:Copper / Q000032:analysis* / Q000097:blood / Q000652:urine; D007202:Indicators and Reagents; D008099:Liver / Q000032:analysis*; D008722:Methods; D008832:Microchemistry; D013053:Spectrophotometry / Q000379:methods
chemical_list: D007202:Indicators and Reagents; D003300:Copper