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Aortic expression (n= 4–8 per group) and activity (n= 7–10 per group) of xanthine oxidase (XO) in young (Y) and old (O) cage control (CC) and voluntary wheel running (VR) mice
| YCC | OCC | YVR | OVR | |
|---|---|---|---|---|
| Expression (norm to YCC AUs) | 1.00 ± 0.07 | 0.93 ± 0.12 | 0.96 ± 0.19 | 0.90 ± 0.10 |
| Activity (×100 mU ml−1 min−1) | 2.6 ± 0.5 | 2.5 ± 0.2 | 2.7 ± 0.5 | 2.3 ± 0.1 |
