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English proof was kindly done by Barbara Metzler from Chiang Mai University English Language Team (CELT) and Ryan Gentry Williams

[DOI] [PMC free article] [PubMed] [Google Scholar] 58.Ni F., Li C., Liao J., Wang G., Lin S., Xia Y., Wen J

This is why our team at Real Peptides emphasizes rigorous third-party testing to ensure purity and eliminate these variables

For example, NMR-titration experiments of non-glutathionylated poplar GrxC4 or ScGrx8 with GSH required high glutathione concentrations to detect chemical shifts 47,48 (and titrations of active site serine mutants with GSSG cannot discriminate between both glutathionyl moieties)

Digestive discomfort such as bloating or cramps 3