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Immunohistochemical expression of p16 in non-neoplastic liver tissue and hepatocellular carcinoma. A moderately differentiated HCC is completely immunonegative for p16 (left). The non-neoplastic liver tissue shows immunostaining for p16 in scattered ductular reactions and mild cytoplasmic immunostaining in few periportal and periseptal hepatocytes (right). Anti-p16-antibody. Hematoxylin-counterstain.
