BRATISLAVA MEDICAL JOURNAL-BRATISLAVSKE LEKARSKE LISTY, vol.120, no.11, pp.839-842, 2019 (SCI-Expanded)
INTRODUCTION: Although the immunohistochemical staining with cytokeratin 7 (CK7) is an adjuvant method for identifying various components of the intrahepatic biliary system, the expression of CK7 does not occur in hepatocytes. In the literature, some studies suggest that a group of cells having dual morphologic and immunophenotypic characteristics of bile duct epithelium and hepatocytes, referred to as progenitor stem cells, was stained positive with CK7.