Vascular injury caused by 6 s electrical burns in rats.

<p>(A) Hematoxylin and eosin staining of muscle and vascular tissues. In the electrical burn group, vascular endothelial cells form protrusions into the lumen; some endothelial cells are stripped from the lumen and thrombi appear in parts of the blood vessels (arrow). In the sham electrical burn group, endothelial cells are intact and organized (arrow). Images on the left are 200 × magnification. Images on the right are 400 × magnification. (B) CD31 immunohistochemical staining of muscle and vascular tissues. CD31 staining is brown. The nuclei are counterstained in blue. The inner layer of CD31+ blood vessels is detached and the lumens are narrow in the electrical burn compared to the sham group (arrow). Images on the left are 200 × magnification. Images on the right are 400 × magnification.