Shuanji et al. showed that TTT could significantly increase the expression of the vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF), epidermal growth factor (EGF), and the platelet derived growth factor (PDGF) in ulcer tissue, which may be the repair mechanism underlying DF wound healing [25]. Here, EGF is linked to ulcer disease.