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. 2019 Jan 10;19:15. doi: 10.1186/s12906-018-2422-3

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© The Author(s). 2019

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Fingerprinting of eCS. a The representative chromatogram used as standard markers is shown: chlorogenic acid (1) of Xanthii Fructus, rosmarinic acid (2) of Menthae Herba, eugenol (3) of Syzygii Flos, 6-gingerol (4) of Zingiberis Rhizoma Crudus, and aristolochic acid I (5) of Asiasari Radix. The key marker compounds detected in the 50% ethanol extract of CS (eCS) are shown in (b)