The expression levels of miR-126-3p in HCC tissues and HCC cell lines. (A) The level of miR-126-3p in 70 HCC tumors was much lower than corresponding non-tumor tissues. (B) Compared to L02, most HCC cell lines displayed much lower expressions of miR-126-3p. Expression levels of miR-126-3p were determined by qRT-PCR and normalized to an endogenous control (U6 RNA). **P < 0.01.