Frontiers The versatile utility of cysteine as a target for cancer treatment Sulfur deficiencyinduced repressor proteins optimize glucosinolate biosynthesis in plants Science Advances If supplements seem to make you feel worse instead of better, you're not imagining it! Many of the supplements most commonly recommended for detox, gut health, or methylation can actually activate mast PDF) The role of sulfhydryl compounds in mammalian melanogenesis: the effect of cysteine and glutathione upon tyrosinase and the intermediates of the pathway