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This work describes a colorimetric glutathione (GSH) assay that is taking advantage of (a) the peroxidase-like activity of a nanocomposite prepared from platinum nanoparticles and graphene oxide (PtNP/GO), (b) the decolorizing reaction of GSH with oxidized 3,3′,5,5′-tetramethylbenzidine (TMB), and (c) the GSH-induced scavenging of hydroxy radicals produced from H2O2. The assay has a detection limit...
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