Figure 5. Effects of PHC on rI/R-induced lung oxidative stress in rats. (A, B) Myeloperoxidase (MPO) production in the lungs was analyzed using immunohistochemistry and an ELISA. (C–E) ELISAs were used to analyze malondialdehyde (MDA), glutathione (GSH) and SOD concentrations in lung homogenates. Data are presented as the mean ± S.D. (n = 8, Scale bar: 50 μm). *P < 0.05, **P < 0.01 vs. the sham group. #P < 0.05, ##P < 0.01 vs. the rI/R group.