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Aortic nitrotyrosine abundance in young (Y) and old (O) cage control (CC) and voluntary wheel running (VR) mice. A, summary graphs (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 blot. From Durrant et al. (2009).
