The glutathione peroxidase Gpx4 prevents lipid peroxidation and ferroptosis to sustain Treg cell activation and suppression of antitumor immunity: Cell Reports Analysis of glutathione: implication in redox and detoxification ScienceDirect Science Time Glutathione Glutathione is a tri peptide, a small protein consisting of three amino acids, that functions as a principle antioxidant, scavenging free radicals and toxins that would otherwise damage and Donor sex, age and ethnicity impact stored red blood cell antioxidant metabolism through mechanisms in part explained by glucose 6 phosphate dehydrogenase levels and activity Haematologica