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. 2017 Aug 22;17:415. doi: 10.1186/s12906-017-1921-y

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© The Author(s). 2017

Open AccessThis 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 — EE extract inhibited cell viability in B16 cells. The cytotoxic effect of EE extract was performed using the MTT assay. (a) B16 and (b) Vero cells were treated with various concentrations of EE extract at different time points for 24 h. Results are mean values ± SD of three independent experiments (n = 3). *p < 0.05 shows significant difference compared with control (0 μg/ml)