Fig. 9

Mean linear intercept (MLI) is reported as a measurement of alveolar airspace enlargement in Control, COPD and COPD plus crocin (CO + CR) rats. ***P < 0.001 vs. the control group and †††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 = 8