Fig. 1

Low expression level of miR-663a in lung cancer patients. a Paired bar chart showing relative expression of 62 fresh NSCLC tissues and paired normal tissues. b Boxplot indicates mean miR-663a levels in NSCLC tissues and paired normal tissues. c Bar chart showing correlation between miR-663a expression level and TNM stage, lymph node status of 62 fresh paired samples. In stageI NSCLC, the percentage of high miR-663a expression was 60 % and in stageII-III NSCLC, the percentage was 37.1 %. In NSCLC without nodal metastasis, the percentage of high miR-663a was 59.6 % and in NSCLC without nodal metastasis, the percentage was 30 %. d Boxplot indicates mean cancer/normal miR-663a ratio in stageI and stageII-III NSCLC tissues. e Boxplot indicates mean cancer/normal miR-663a ratio in NSCLC tissues with or without nodal metastasis. f Relationship between miR-663a and JunD mRNA expression in NSCLC tissues (p = 0.005)