RT-PCR to detect the expression of candidate genes in five human NSCLC cells lines treated by 1 µM 5-aza-dC. Downregulation of the ABL2 and upregulation of the CAF1, DVL1, Hint/PKCI-1, TIMP-1, and TRP-1 genes were found in three, three, three, two, two, and three of five cell lines, respectively. The expression of GAPDH was used as quantitative standard.