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. 2020 Nov 18;11:558471. doi: 10.3389/fphar.2020.558471

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Copyright © 2020 Wang, Wu, Xie, Ding, Lv, Bian, Chen, Nisma Lena, Wang, Ye and Sun

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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Representative base peak intensity (BPI) chromatograms of WFC in positive mode (A) and in negative mode (B) and total ions chromatogram (TIC) in positive mode (C) and in negative mode (D) by UHPLC-ESI-Q-TOF/MS.