Fig. 1.

Hematoxylin and eosin staining of biopsies demonstrating different grades of re-epithelialization. Completely healed epidermis was seen in the group treated with HA after 24 hours (A and C). In contrast, wounds treated with saline solution (9 mg/ml) showed incomplete healing after 24 hours (B and D). At day 14, all wounds in all groups were re-epithelialized. E and G, Wounds treated with HA at day 14. F and H, Wounds treated with saline solution at day 14. Arrows indicate wound sites and wound directions. Scale bar = 500 µm.