In this study, we examined expressions of EMT biomarkers including E-cadherin, Snail, β-catenin, and fibronectin in 25 paired lung tumor and adjacent normal tissues by RT-PCR and found that tumor tissues had lower E-cadherin and β-catenin expressions and higher Snail and fibronectin expressions than adjacent normal tissues (Figure 4A). Here, SNAI1 is linked to neoplasm.