Fig. 6

Histological evaluation of epidermal growth factor (EGF) combined with vacuum sealing drainage (VSD) in the treatment of wounds. a. HE staining of the wound 10 d after operation; the following picture is an enlargement of the local area from the above picture. b. Masson staining of the wound 10 d after the operation; the following picture is the enlargement of the local area from the above picture. The scale bar in the global image above is 500 μm, and the scale bar in the enlarged image below is 70 μm