Figure 4From: Keratin 19 marks poor differentiation and a more aggressive behaviour in canine and human hepatocellular tumoursExamples of K19 negative human hepatocellular tumours. Immunohistochemical staining of K19 negative cells is shown in (A), positive bile-ducts at the periphery of the tumour indicated by arrow. HE staining, moderately differentiated hepatocytes with trabecular growth pattern is shown in (B), absence of immunohistochemical staining for Glypican-3 is shown in (C). Positive immunohistochemical staining for HepPar-1 is shown in (E).Back to article page