Activity of Superoxide Dismutase, Catalase, Glutathione Peroxidase, and Glutathione Reductase in Different Stages of Colorectal Carcinoma Digestive Diseases and Sciences Springer Nature Link First line defence antioxidants superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX): Their fundamental role in the entire antioxidant defence grid ScienceDirect SOD Creative Enzymes Figure 1 from Comparing glutathione peroxidase and glutathione reductase activity and their associations with cardiovascular measures in Africans and Caucasians : the SABPA study Semantic Scholar Enhancing the skin's natural antioxidant enzyme system by the supplementation or Upregulation of Superoxide Dismutase, Catalase, Glutathione Peroxidase glisodin sod gliadin complex