The results of RT-PCR for C-MYC in SGC7901 cell and HFE145 cell. S1, S2 were the results of RT-PCR for C-MYC, N-MYC, and β-actin control in SGC7901 cell. H1 and H2 were the results of RT-PCR for C-MYC, N-MYC, and β-actin control in HFE145 cell. The results showed that there was C-MYC expression in SGC7901 cell but no detectable expression of C-MYC gene in HFE145 cell. On the other hand, there was no detectable expression of N-MYC gene in SGC7901 or HFE145 cell