Fig. 6

Histological changes of lungs. Lung tissue section of PBS, OVA, and OVA/rTs-chit group was stained with hematoxylin and eosin (H&E) or periodic acid shiff (PAS). Perivascular and peribronchial infiltration was scored. The yellow arrow represents inflammatory infiltrating cells, and the green arrow represents goblet cells. *P < 0.05 significant difference compared with the PBS group, #P < 0.05 compared with the OVA group. Scale bars: 100 μm (magnification 200 ×)