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. Author manuscript; available in PMC: 2006 Jun 28.
Published in final edited form as: Anal Bioanal Chem. 2006 Mar 18;385(1):105–113. doi: 10.1007/s00216-006-0375-8

Scheme 1.

Scheme 1

The enzymatic recycling method for quantitation of GSH and/or GSSG. GSSG, oxidized glutathione; GSH, reduced glutathione; GR, glutathione reductase; DTNB, 5,5′-dithiobis(2-nitrobenzoic acid); TNB, 5-thio-2-nitrobenzoic acid; GSTNB, the disulfide product of reaction of GSH with DTNB.