Humic Acid Enhances Wound Healing in the Rat Palate

Figure 2

The representative histological image of the wound areas. (A) Representative histological image of the humic acid treated wounds at 1st week. The red star shows the wide necrotic and severely inflamed area, while the black star points to the mucosal epithelium. (B) Representative histological image of the humic acid treated wounds at 3rd week. The red star shows the mildly inflammatory area and granulation tissue, while the black stars show the constricted mucosal epithelial layer. (C) A representative section of humic acid treated tissues at the end of the study. Black star shows complete mucosal epithelial repair and healing.