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. 2018 Feb 5;18:50. doi: 10.1186/s12906-018-2110-3

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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 — Photomicrograph of vital organs in acute oral toxicity (H & E Stain, ×100). Liver: black arrow – portal vein; white arrow – portal triad. Kidney: black arrow – cortex; white arrow – medulla. Heart: black arrow – myocardium; white arrow – blood vessel. Lung: Black arrow – alveoli; white arrow – bronchiole. Spleen: Black arrow – white pulp, white arrow – red pulp