SOX9 and non-small cell lung carcinoma: Western blotting and real-time PCR analyses were performed to determine the levels of SOX9 protein and mRNA, respectively, in primary normal lung epithelial cells (NLEC) and seven NSCLC cell lines: SK-MES-1, NCI-H460, NCI-H358, NCI-H1650, NCI-H1975, NCI-H596, and PAa.