[Retracted] The Effect of Qingre Huayu Recipe on Wound Healing after Anal Fistulotomy in Sprague-Dawley Rats

Figure 4

Ultrastructure analysis by transmission electron microscopy. Tight junctions of vascular endothelial cells and collagen were observed under TEM in wound healing. The microvascular endothelial cells and the distribution of collagen fibers were observed after treatment for 14 days (×5000 magnification and ×10000 magnification).