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GSH levels were measured in whole blood, red blood cells, plasma, lymphocytes, and buccal mucosal cells

After GPx consumes part of the initial H 2 O 2 substrate, the remaining H 2 O 2 interacts with ferrous ions (Fe 2+ ), proceeding through a classic Fenton-type redox reaction that oxidizes Fe 2+ ions to ferric ions (Fe + )

At present, the industrial production of vitamin B12 is mainly carried out by anaerobic fermentation using Propionibacterium fischeri and Propionibacterium spp