Changes in lung pathology and lung injury score. A: Representative lung pathological graphs (a: control group, b: paraquat group, c: Xuebijing + paraquat group, d: dexamethasone + paraquat group). B: Statistical analysis of lung injury score. Data are expressed as mean ± SEM. **P < 0.01 compared with control group; #
P < 0.05 compared with paraquat group; P > 0.05 Xuebijing + paraquat group compared with dexamethasone + paraquat group.