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. 2019 Jul 17;10:796. doi: 10.3389/fphar.2019.00796

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Copyright © 2019 Zheng, Liu, Liu, Zheng, Sun, Ji, Sun, Yang, Zhao, Qi, Li, Li, Zhang, Fan and Wang

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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Base peak ion chromatogram of plasma samples in negative ion mode by UPLC-MS/MS. (A) Bu Shen Yi Sui formula (BSYS) group; (B) Bu Shen formula (BS) group; (C) Hua Tan Huo Xue formula (HTHX) group. (1) Forsythoside E; (2) echinacoside; (3) rehmaionoside B; (4) 2,3,5,4′-tetrahydroxyl diphenylethylene-2-O-glucoside; (5) forsythin.