Fig. 7From: Crocin attenuates cigarette smoke-induced lung injury and cardiac dysfunction by anti-oxidative effects: the role of Nrf2 antioxidant system in preventing oxidative stressLung wet-to-dry ratio in Control, Crocin, COPD and COPD plus crocin (CO + CR) rats. ***P < 0.001 vs. the Control group; ††P < 0.001 vs. the COPD group. All the groups were statistically compared by ANOVA followed by Tukey’s multiple comparison. Data are expressed as the mean + SEM, n = 8Back to article page