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. 2021 Jun 17;8:653312. doi: 10.3389/fcvm.2021.653312

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Copyright © 2021 Tan, Yu, Han, Liu, Yang, Xia and Yin.

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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Enhanced sST2 production in atria from persistent AF patients. Representative images of Masson, HE, and immunohistochemistry (IHC) staining (α-SMA and sST2) in atria from persistent AF patients and sinus rhythm (SR) controls at low and high magnifications (A). IHC staining showing that sST2 and fibrotic tissues are restricted in the similar areas (indicated by red squares) (A). The content of ST2 in atria was measured by Western blotting (B). Quantitation is shown in (C). PeAF, persistent AF. ***P < 0.001 vs. Baseline.