To further explore the biological function of ARTN in non-small cell lung cancer, qRT-PCR was used to detect differences in ARTN expression in normal lung epithelial cells(HBE) and lung cancer cells(NCIH1299, PC9, NCIH292, NCIH460) (Fig. 7B), and differential expression of ARTN in clinical paired tissue samples was also detected by qRT-PCR(Fig. 7C) and immunohistochemical staining(Fig. 7D). The gene discussed is ARTN; the disease is lung carcinoma.