Fig. 1

Expressions of miR-30b in paired NSCLC and adjacent normal tissues. a Relative expression levels of miR-30b in paired NSCLC and adjacent normal tissues. There is a statistically significant difference (P < 0.05). b On the basis of differentiation, NSCLC tissues were divided into two groups (Well and Moderate & Poor). The down-regulation of miR-30b was notably in Moderate & Poor group (P < 0.05). c In TNM stage of tumor tissues, the expression of miR-30b was successively declined (P < 0.05). d On the basis of lymph node metastases, the expression of miR-30b was significantly lower in N0 group than N1–N3 group (P < 0.05)