sentence: [ 1213 ] These proteins , especially VEGF , can induce endothelial cell proliferation , migration and vascular permeability at different levels ( Maharaj and D ’ Amore , 2007 ) [ 14 ] leading to increased angiogenesis and microvessel formation.In this study , we observed a highly significant difference on inter-comparison of the VEGF expression in the epithelium between KCOT and RC ( 0.00156 ) where as a nonsignificant difference was observed on inter - comparison of the VEGF expression in the connective tissue between KCOT and RC ( 0.1281 ) .