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. 2014 Aug 27;9(8):e105886. doi: 10.1371/journal.pone.0105886

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© 2014 Zhou 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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Lung metastasis H&E at 5X (A) and 20X (C) objective magnification; lymph node metastasis H&E at 5X (B) and 20X (D) objective magnification; pan-cytokeratin immunohistochemistry of lung (E) and lymph node (F) metastases.