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. 2018 Apr 10;18:128. doi: 10.1186/s12906-018-2157-1

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© The Author(s). 2018

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 — Effects of the four extract fractions on cell viability (a), catalase activity (b), and levels of glutathione (GSH) (c), Nitric Oxide(NO) (d) and malondialdehyde (MDA) (e) in human umbilical vein endothelial cells subjected to H₂O₂-induced oxidative stress. *P < 0.05 vs. control. ^#P < 0.05 vs. H₂O₂ alone. n = 12. Con: control; PEF: petroleum ether fraction; EAF: ethyl acetate fraction; NBF: n-butanol fraction; AQF: aqueous fraction