Figure 2

Histological findings of hematoxylin and eosin (H&E)-stained lungs. The 4 groups of mice were intratracheally inoculated with vehicle, CSBG, OVA, or CSBG + OVA for 4 wk. Lungs were obtained 24 h after the final intratracheal administration, and representative photographs of H&E-stained lung tissues are shown. Original magnification ×100. Polymorphonuclear leukocyte (PMN) and mononuclear cell (MON) infiltration is expressed as the average number of PMNs and MONs per millimeter of basement membrane. Values represent the mean ± SE (n = 5 in each group). * P < 0.01 vs. vehicle; ^$ P < 0.05 vs. CSBG.