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Maturation increases glutathione content and peroxide-removing enzymes in skeletal muscle of hooded seals. Maturation increases glutathione content and peroxide-removing enzymes in skeletal muscle of hooded seals. (A) Total glutathione content (GSH-Eq), (B) 1-cys peroxiredoxin (PrxVI) protein expression, (C) glutathione peroxidase (GPx) and (D) catalase activities in neonates, weaned pups and adult hooded seals. One unit of GPx is defined as the amount of enzyme that oxidizes 1 μmol NADPH min–1 at 25°C. One unit of catalase is defined as the amount of enzyme needed to reduce 1 μmol H2O2 min–1 at 25°C. Data are means ± s.e.m. *, P<0.01. José Pablo Vázquez-Medina et al. J Exp Biol 2011;214: © 2011.
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