NOTCH1 and non-small cell lung carcinoma: The results of immunohistochemistry and RT-PCR showed that Egf17, Notch1, E-cadherin, and vimentin protein expressions were consistent in NSCLC tissues and adjacent normal lung tissues, that is, the positive expression rate and mRNA expression of Egf17, Notch1, and vimentin in NSCLC tissues were higher than those in adjacent normal lung tissues.