glutathione peroxidases role in hepatic detoxification Frontiers Glutathione peroxidase - Wikipedia
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doi:10.1111/j.1464-410X.2008.08162.x Dan Spinu A, Gabriel Bratu O, Cristina Diaconu C, et al
6166, DOI: 10.1002/cbf.937, PMID: 11835271 (ang.).
It is cysteine that gives GSH its antioxidant activity
Without adequate B12, these processes begin to function sub-optimally and the effects, while not always dramatic in the early stages, accumulate in ways that many people experience as persistent tiredness, reduced mental sharpness, lower mood and a general lack of the vitality they feel they should have
