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. 2019 Jan 17;24(2):323. doi: 10.3390/molecules24020323

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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High-performance liquid chromatography with evaporative light scattering detection (HPLC-ELSD) chromatograms of multi-standards (A) and samples (B). 1, rosmarinic acid; 2, carnosol; 3, carnosic acid; 4, oleanolic acid; 5, ursolic acid.