Figure 4. Blocking SFRP1 in palatal wounds. (A) Epithelial and connective tissue gaps, (B) area of new connective tissue formation, (C) percentage of new connective tissue formation relative to the area of original excisional defect, (D) the number of PMNs, and (E) mononuclear inflammatory cells, (F) the percentage of apoptotic inflammatory cells and (G) fibroblasts, and (H) SFRP1 expression in uninjected (palatal group on day 10) and anti-SFRP1 antibody-injected groups. Each value represents the mean ± SEM (n = 5). *i.e., p < 0.05 by Student’s t test.