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. 2013 Sep 24;13:436. doi: 10.1186/1471-2407-13-436

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Copyright © 2013 Tewari 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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Expression of CD20 in pancreatic ductal adenocarcinoma. Representative photomicrographs of CD20 expression. a: moderate number of B lymphocytes in the stroma (red arrow head) in pancreatic carcinoma. b: Lymphoid follicle (red arrow head) rich in CD20 lymphocytes from patient with pancreatic carcinoma. c: absence of CD20 in both epithelial component (red arrow head) and stroma (green arrow head) in poorly differentiated pancreatic adenocarcinoma (G3). Photomicrographs are at 5× magnification.