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. 2010 Oct 22;5(10):e13603. doi: 10.1371/journal.pone.0013603

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Lorenzetti 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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A) Ductal breast carcinoma neoplastic nuclei show positive staining with EBNA1 (clone 1H4) monoclonal antibody, (black arrows), but no infiltrating lymphocyte gave positive signal (400X). B) EBNA1 (clone 1H4) negative ductal carcinoma tissue (400X). C) EBNA1 (clone 2B4) positive signal in nuclei of neoplastic breast cells (400X). D) EBNA1 (clone 2B4) negative ductal carcinoma tissue (400X).