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. 2021 Jun 21;12:645354. doi: 10.3389/fphar.2021.645354

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Copyright © 2021 Ma, Chen, Liu, Zhao, Wang, Zhou, Xu, Zhu, Wang and Ma.

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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Hematoxylin and eosin staining of thyroid tissue from rats (A) control group (B) model group (C) YH 5 g crude drug/kG group (D) YH 15 g crude drug/kG group (E) selenious group. Magnification times, ×20.