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. 2016 Sep 1;14(1):254. doi: 10.1186/s12967-016-1017-3

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© The Author(s) 2016

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. 7 — Typical tracing showing inhibitory effect of a increasing concentrations of the crude extract of U. dioica (Ud.Cr) on the initial peak formation of phenylephrine in Ca²⁺-free medium. b The combined effect of Ud.Cr, its ethyl acetate (Ud.EtAc), nHexane (Ud.nHex), chloroform (Ud.Chl), and aqueous (Ud.Aq) fractions, and c the effect of verapamil on initial peak formation of PE in isolated rabbit aorta preparations, in Ca²⁺-free medium. Values shown are mean ± SEM (6–7)