Fig. 7

Effects of NBP on the oxidative stress of rats under conditions of acute and chronic hypoxia after the shuttle-box experiment. Levels of MDA, H2O2, SOD, and GSH-Px in the serum of acute (a) and chronic (b) hypoxia rats were detected. *P < 0.05 compared with control group; ∆P < 0.05 compared with 120 mg/kg group