Specific activity of catalase (A), GR (B), GPX (C), GST (D) and Nox (E) from tissue homogenates of adult rats treated with control and restricted-iron (ARI) or enriched-iron (AEI) diets and of young rats (U/mg of protein).

<p>Average and standard deviation: n = 7 (CT); n = 5 (ARI); n = 8 (AEI); n = 6 (young). Difference between control group and test groups:*p≤0.05; **p≤0.01; ***p≤0.001 (Student's t-test). GR, glutathione reductase; GPX, glutathione peroxidase; GST, glutathione-S-transferase; Nox, Nicotinamide adenine dinucleotide phosphate oxidase.