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. 2022 Feb 24;12:775745. doi: 10.3389/fphar.2021.775745

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Copyright © 2022 Feng, Li, Wang, Gu, Zhang, Li, Chen, Ma, Lin, Zhang and Zhao.

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 total ion chromatogram of YQHXD. (A) The total ion chromatogram in positive ion mode of YQHXD; (B) The total ion chromatogram in negative ion mode of YQHXD.