Figure 2 from Oxidative stress in asthma and COPD: antioxidants as a therapeutic strategy. Semantic Scholar Glutathione reductase Wikipedia Figure 2. Antioxidant enzyme activity in tissues. A, glutathione reductase (GR); B, glutathione peroxidase (GPx); C, superoxide dismutase (SOD); D, catalase (CAT) Values are mean S.D of 10 parallel measurements. * Glutathione reductase modulates endogenous oxidative stress and affects growth and virulence in Avibacterium paragallinarum Veterinary Research Springer Nature Link Insights of Antioxidants as Molecules for Drug Discovery