highly significantp < 0.001
TGF-β1 versus TGF-β3 expression in NOM, OSF (stage 1 to stage 4), and OSCC with and without OSF TGF-β3 expression showed a highly significant increase in both epithelial and connective tissue compared to TGF-β1 in all groups (p < 0.001) (Table 3 , Figure 3 ).