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. 2019 Dec 3;19:348. doi: 10.1186/s12906-019-2759-2

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© The Author(s). 2019

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. 2 — 3D-structures of protein targets: a adrenergic α₁ receptor, b muscranic M₁, c muscranic M₃, d dopaminergic D₂, e calmodulin, f mu-opioid, g voltage gated L-Type calcium channel, h histaminergic H₁, i histaminergic H₂, and (j) H⁺/K⁺ ATPase pump