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. 2018 Apr 13;17(3):654–664. doi: 10.1177/1534735418766416

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© The Author(s) 2018

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 3. — The Bursera copallifera extract was cytotoxic to breast cancer cell lines. In (A), we used MTT transformation to compare the sensitivity to the extract between the MCF7 and MDA-MB-231 cell lines. The graph shows mean + SE of 4 independent experiments performed in triplicate. *Different from the other cell line, p < .05. In (B) and (C), Calcein/propidium iodide staining were used to test cytotoxic effects of the extract. In (B), graphs show the mean + SE of 3 independent experiments. *Different from vehicle-treated cells, P < .05. A representative image is shown in (C) for the different concentrations of the extract tested (μg/mL).