l Cysteine Glutathione Mixed Disulfide, a Novel Bioavailable Sulfhydryl Modified Glutathione Precursor, Protects against Early Liver Injury Induced by Short Term Hypercholesterolemia Chemical Research in Toxicology Cysteine, Glutathione, and Thiol Redox Balance in Astrocytes Glutathione: pharmacological aspects and implications for clinical use Geriatric Care Disulfide bond formation by exported glutaredoxin indicates glutathione's presence in the E. coli periplasm PNAS Cysteine Wikipedia