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doi: 10.1038/nprot.2018.020 84 NiaHTMunnLLJainRK

While GHK-Cu delivers copper in a chelated form that prevents oxidative damage, extended continuous use could theoretically affect copper homeostasis

A Phase IIb Vanguard Study Characterizing the Occurrence of Recurrent or Second Primary Tumors in Patients With a Prior History of a Definitively Treated StageI/II Head and Neck or Non-Small-Cell Lung Cancer Who Are Current or Former Smokers

For the quantification of these metabolites in TIF samples, 5 l samples were extracted in 45 l ice-cold extraction solvent (75% acetonitrile, 25% methanol and 0.1% formic acid) containing isotope-labelled internal standards (36 M 13 C 2 , 15 N-GSH, 0.92 M 13 C 4 , 15 N 2 -GSSG and 10 M D 4 -cystine)