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. 2018 Dec 11;3(2):277–292. doi: 10.1002/hep4.1295

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© 2018 The Authors. Hepatology Communications published by Wiley Periodicals, Inc., on behalf of the American Association for the Study of Liver Diseases.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Cytokines IL‐33 and IL‐6 are expressed in human EHBDs. (A,B) Human extrahepatic cholangiocarcinoma and adjacent noncancerous tissue were examined for expression of (A) IL‐33 and (B) IL‐6R by immunohistochemistry (arrows, epithelial cells; arrowheads, stromal cells; asterisks, BD lumen; scale bars, 100 µm).