Resu lts The experssion of EGF, EGF-R, NGF,NGF-R CD68 and CD3 w ere observed in the experimental group, especially at 5 and 9 days, no expressio n of those six items in the control group.

• 结果六项免疫组织化学检测结果，在各实验组均见有不同程度的表达，且第5和第9天两时间点较为明显。