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Aortic NADPH oxidase (p67 subunit) in young (Y) and old (O) cage control (CC) and voluntary wheel running (VR) mice. A, summary graphs for protein expression (left panel) and enzyme activity (right panel) (protein expression normalized to GAPDH). *P < 0.05 vs. Y CC, †P < 0.05 vs. O CC; values are mean ±s.e.m. B, representative blots. From Durrant et al. (2009).
