Fig. 2. A histologic photomicrograph of hematoxylin and eosin stained sections of surgical wound at 7 days after the operation. (A) Approach of regenerated epithelial cells
(Epi) as amoderate epithelialization, marked decrease of inflammatory response, and remarkable increase in the amount of newarranged collagen fibers (Nco) (magnification
4×). (B) Material B treated wound. Complete epithelialization (Epi) with rete process under the granulation tissue with significant decreased inflammatory response and a
marked increase of well-aligned collagen fibers (Nco) indicating complete healing of the wound (magnification 4×). (C) Hyaluronic acid wound treated infiltration of chronic
inflammatory cells among the rete process and in depth of connective tissue shows persisting inflammatory response. Approach of Epi as a moderate epithelialization, and
moderate increase in the amount of Nco (magnification 4×). (Control) Untreated wound of control group. A more intense inflammatory response with infiltration of chronic
inflammatory cells in the granulation tissue, extensive extravasated erythrocytes (Ac) and haemosiderin-laden macrophage, mild increase in the amount of Nco, and scant
proliferated epithelial cells (Epi) on the wound surface (magnification 10×).