Fig. 7: Expression of oxidative stress-related factors in wild-type mice and PD-1−/− mice after skeletal muscle contusion.

(a) Nox2 mRNA expression at various time points after skeletal muscle contusion. (b) Prdx1 mRNA expression at various time points after skeletal muscle contusion. (c) sod1 mRNA expression at various time points after skeletal muscle contusion. (d) Gpx4 mRNA expression at various time points after skeletal muscle contusion. Data are mean ± SD, n (WT) = 8, n (PD-1−/−) = 6. aCompared with WTcon group, P < 0.05; bCompared with Pcon group, P < 0.05; cat the same time point, the PD-1−/− mice compared with wild-type mice, P < 0.05.