Expression of SIRT6 and miR-34a in four pairs of NSCLC tissues and normal tissues. N1, N2, N3 and N4 represent four normal tissues. C1, C2, C3, and C4 represent four NSCLC tissues. A. The mRNA expression of SIRT6 in NSCLC tissues and normal tissues, which were detected by RT-PCR. B. The mRNA expression of miR-34a in NSCLC tissues and normal tissues, which were detected by RT-PCR. C. The protein expression of SIRT6 in NSCLC tissues and normal tissues, which were detected by WB.