Fig. 6.

Histological examination of skin wound healing was observed by H&E staining of the whole skin wound (A) and the center of skin wound (B) wound engrafted by blank (a), plasma gel scaffold (b), non-vascularized (c), and pre-vascularized skin (d) under 20× magnification at 7 and 14 days post-surgery. Green dashed rectangle marks the wound center on the dorsal area of nude mice, and the magnification presented as (B) on the right side of images. The epidermal layer could not be found in the blank group. Scale bars = 100 μm. N indicates normal skin. W indicates wound bed. Black triangles in the images indicate the boundaries between the wound and the surrounding normal skin. Red arrows indicate micro-vessels. n = 6 for each group.