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[Google Scholar] 113.Thompson AA et al

Whether this association reflects cause or effect is unknown, but it has also been reported that excessive exposure to oxidant stress via pollutants or UV irradiation is associated with depleted vitamin C levels in the epidermal layer

Comparative study of subacute combined degeneration of the spinal cord due to nitrous oxide abuse and vitamin B12 deficiency

Cells were then harvested, fixed with electron microscopy fixative, processed for sectioning, and stained prior to examination by transmission electron microscopy

Once in the extracellular space, GSH can be degraded by the membrane-bound ectoenzyme gamma-glutamyltransferase (GGT, also known as -GT), which cleaves the -glutamyl bond, releasing cysteinyl-glycine (Cys-Gly) 26,27