MMP2 and leukoplakia: The expression score of MMP-2 and TIMP-2 in each of the 10 cases of leukoplakia with mild dysplasia (Figures 1(e) and 1(f)), moderate dysplasia (Figures 1(g) and 1(h)), and severe dysplasia (Figures 1(i) and 1(j)) in the basal and the parabasal cells of the epithelium and in the fibroblasts of the lamina propria is shown in Table 2.