Fig. 3

Effects of SSTW on recruitment of leukocytes and mucus production in lung tissue. Lung tissues were stained with (a) H&E and (b) periodic acid–Schiff (PAS) solution (magnification 200 ×). a and b Representative photomicrographs of lung sections are shown (n = 6 per group). c Inflammation index and (d) mucus production index were determined using an image analyzer. NC, normal control group (PBS only); OVA, OVA-induced group; Mon, montelukast (30 mg/kg) + OVA-induced group; SSTW-100, SSTW (100 mg/kg) + OVA-induced group; SSTW-200, SSTW (200 mg/kg) + OVA-induced group. Each bar represents the mean ± SEM (n = 6 per group). Significant differences at ^##P < 0.01 compared with the NC group. Significant differences at ^*P < 0.05 and ^**P < 0.01 compared with the OVA-induced group