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. 2023 Jul 6;13:1166549. doi: 10.3389/fonc.2023.1166549

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Copyright © 2023 Wang, Li, Wang, Ran, Zhu, Li, Jiang and Wang

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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(A) Micro signet-ring carcinoid lesion, CK showed positive expression, by En Vision method, ×200. (B) Gastric foveolar-type signet-ring cell carcinoma, CK20 showed positive expression, by En Vision method, ×200. (C) Undifferentiated adenocarcinoma with signet-ring cell differentiation, CK showed positive expression, by En Vision method, ×200. (D) Mucinous adenocarcinoma with signet-ring cell differentiation, HER2 positive 1+, by En Vision method, ×200. (E) Adenoid adenocarcinoma with signet-ring cell differentiation, villin signet-ring carcinoma and adenocarcinoma showed positive expression, by En Vision method, ×200. (F) Fundus gland adenocarcinoma with signet-ring cell differentiation, ki67 showed positive expression, by En Vision method, Hp ×200.