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. 2012 Jul 29;5:390. doi: 10.1186/1756-0500-5-390

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Copyright ©2012 Guimei et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Cases of hepatitis, cirrhosis and HCC stained for CK19. A case of chronic hepatitis showing (a) single scattered CK19-positive cells in the lobule (arrow) (×100). (b) A case of cirrhosis showing a higher grade of CK19-positive ductular reaction and individual positive cells in the lobule (arrow). (CK19, ×100). (c) A case of HCC showing negativity for CK19 in tumor cells. (Streptavidin-peroxidase technique, anti-CK19 monoclonal antibody, ×200).In right panels: Line graphs show significant correlations between CK19 and each (d) grade, (e) stage and (f) ductular reaction.