Representative expression in the hNHeps and HCC cell lines of various tyrosine kinases, including Alex, HuH7, Li-7, Hep3B, HLE and HLF. As compared to the hNHeps cell line, ErbB2, ErbB3, ErbB4, insulin R, ROR2, TrkA, EphA1, Tie-1, FGFR2α, FGFR3, PDGFRβ, EphA4, c-Ret, Mer and VEGFR3 were up-regulated in some of the cancer cell lines studied. The up-regulation of ErbB2 (•) was detected in all of the HCC cell lines examined in this study, while it was not detected in the hNHeps cell line.