Fig. 1

Representative microscopic images of low and high c-Met and HGF immunohistochemical staining. a c-Met low expression; the representative case shown was completely negative for c-Met immunoreactivity. b c-Met high expression; the representative case demonstrated c-Met immunoreactivity in the cytoplasm of carcinoma cells. c HGF low expression; the representative case shown was completely negative for HGF immunoreactivity. d HGF high expression; the representative case demonstrated HGF immunoreactivity in the cytoplasm of carcinoma cells. HGF, hepatocyte growth factor