Figure 2.

A. Expression level of CHRNA7 in NSCLC tissue specimens by qRT-PCR. Total RNA was isolated from normal and lung cancer tissues. CHRNA7 expression was analyzed by qRT-PCR and normalized to GAPDH expression. B. Expression status of α7 nAChR in NSCLC via IHC. (Left) Low expression of α7 nAChR; (Right) High expression of α7 nAChR. C. (Left) Survival curve of patients with low and high α7 nAChR expression; (Right) Recurrence free survival curve of patients with low and high α7 nAChR expression. IHC = immunohistochemistry , nAChR = nicotinic acetylcholine receptors, NSCLC = non-small cell lung cancer, qRT-PCR = quantitative real-time polymerase chain reaction.