Glutathione Peroxidase 3 Deficiency Promotes Platelet Dependent Thrombosis In Vivo Circulation Queuosine (Q) is a molecule that humans can only get from foods and gut bacteria. It's been known to microbiologists for decades, who know it plays a role in protein synthesis Measurement of superoxide dismutase, catalase and glutathione peroxidase in cultured cells and tissue Nature Protocols Studies show children with autism have significantly lower levels of glutathione, the body's master antioxidant. Without enough glutathione, the body struggles to eliminate toxins, making it harder to cope with everyday