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. 2017 Nov 23;8:870. doi: 10.3389/fphar.2017.00870

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Copyright © 2017 Chen, Wang, Qi, Ge, Tian, Li, Zhang, Wang, Huang and Tang.

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) or licensor 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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Base peak ion (BPI) chromatogram of extracts from Rhaponticum uniflorum roots in negative ion mode determined by ultra-performance liquid chromatography-Q/-time-of-flight-mass spectrometry (UPLC-Q/TOF-MS).