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. 2023 Sep 14;13:912168. doi: 10.3389/fonc.2023.912168

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Copyright © 2023 Li, Li, Chen, Su, Wang and Zhou

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The biopsy of the right supraclavicular lymph node. (A–D) The first biopsy of the right supraclavicular lymph node. (A) Hematoxylin and eosin-stained staining of the right supraclavicular lymph node. (B) Immunohistochemical staining of CK. (C) Immunohistochemical staining of p63. (D) Immunohistochemical staining of TTF-1. (E–H) The second biopsy of the right supraclavicular lymph nodes. (E) Hematoxylin and eosin-stained section of the right supraclavicular lymph node. (F) Immunohistochemical staining of CK. (G) Immunohistochemical staining of p63. (H) Immunohistochemical staining of TTF-1.