Fig. 2

Chelidonium majus reduced pulmonary lesions and serum inflammatory cytokines levels. A H&E staining (magnifcation × 200), blue arrows indicate inflammatory cell infiltration. B Masson staining (magnifcation × 200). C PAS staining (magnifcation × 200), red arrows indicate goblet cell proliferation. D inflammation score. E Masson score. F PAS score. G–I Inflammatory cytokines assay. Data are represented by mean ± SEM (n = 8). ##P < 0.01 versus the Control group; *P < 0.05, **P < 0.01 versus the Model group