Scanning electron microscopy
Sinonasal mucosa from preoperative patients in the three groups were poorly ciliated(Figure3A,D,G). 2 weeks after ESS, the mucociliary coverage of rh-bFGF experimental groups was significantly higher than control group(Figure 3B,E,H). The ciliary coverage in the control group increased at 1 month. However, it was still lower than the rh-bFGF experimental groups(Figure3C,F,I).