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Classifications of cellular antioxidants. GSH, glutathione; SOD, superoxide dismutase.
| Enzymatic | Non-enzymatic |
|---|---|
| SOD Catalase GSH peroxidase |
GSH Ascorbic acid Vitamin E Beta-carotene Uric acid |
| Endogenous | Exogenous (dietary) |
| SOD Catalase GSH peroxidase Uric acid Bilirubin |
Ascorbic acid Vitamin E Beta-carotene |
