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. 2014 Sep 19;9(9):e107913. doi: 10.1371/journal.pone.0107913

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© 2014 Liu et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Row 1, morphology observation with HE staining. Row 2, HBx immunochemical staining. Row 3, HNF4α immunochemical staining. Row 4, CYP2E1 immunochemical staining. All HE staining or immunochemical staining were shown as typical fields from five cases of human normal, and five cases of paracarcinoma or HCC liver tissues.