Fig. 6

BALF contents of interleukine-6 (IL-6) and tumor necrosis factor-a (TNF-a) 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 = 8