EZH2 and non-small cell lung carcinoma: Relative to the three SCLC cell lines, EZH2 mRNA expression levels decreased in most NSCLC cells other than RERF‐LC‐AI and NCI‐H1975 cells, whereas those of E‐cadherin mRNA increased in most NSCLC cells other than RERF‐LC‐AI, Sq‐5 PC3, and NCI‐H1299 cells.