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. 2016 Jan 11;50(4):318–321. doi: 10.4132/jptm.2015.10.17

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© 2016 The Korean Society of Pathologists/The Korean Society for Cytopathology

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 3. — Photomicrographs of immunohistochemistry (IHC) for c-erbB2 in mixed adenoneuroendocrine carcinoma with trilineage histologic differentiation. IHC for c-erbB2 shows strong positivity in the adenocarcinoma component (A), and in the metastatic regional lymph nodes (B), whereas IHC for c-erbB2 is negative in neuroendocrine carcinoma (C) and squamous cell carcinoma component (D).