The levels of ErbB3 and miR-125a-5p in hepatitis B virus (HBV) tissues and cells. (A) The mRNA and protein expressions of ErbB3 in normal liver tissues (n = 10) and HBV-HCC tissues (n = 10) were detected by quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot, respectively. (B) The mRNA and protein expressions of ErbB3 in HepG2, HepG2.2.15, HepG3, and HepG3X cells. (C) The levels of miR-125a-5p and miR-4319 in normal liver tissues (n = 10) and HBV-HCC tissues (n = 10) were detected by qRT-PCR. (D) The levels of miR-125a-5p and miR-4319 in HepG2, HepG2.2.15, HepG3, and HepG3X cells. The data shown are the means ± standard error of the mean (SEM), n = 4. ***p < 0.001 versus normal liver tissues; ##p < 0.01, ###p < 0.001 versus HepG2 or HepG3.