Fig. 3.
A, Immunohistochemistry for hepatocyte-specific biomarker HEPPAR. Hepatocytes in the cluster stain positive (black arrows). HEPPAR-positive cells are also seen in cells embedded in ductules (red arrows). (Original magnification ×100.) B, Immunohistochemistry for hepatocyte-specific transcription factor HNF4α. Nuclei of cells recognizable as hepatocytes in the periphery of the cluster stain positive (black arrow). Positive nuclei are also seen, however, in biliary ductules in the periphery (red arrow). (Original magnification ×100.)