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. 2016 Dec 15;11:57. doi: 10.1186/s12995-016-0145-2

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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. 2 — TEM images of AM after 1-h exposure of AM to (a) Coarse particles at 6,000x magnification, (b) UF particles at 6,000x magnification, and (c) UF particles at 20,000x magnification. In the higher magnification micrograph, the silica particles are marked S, the mitochondria are marked M, and W denotes a white area resulting from particles falling out of the resin. Figures present a representative image of the differences in AM uptake and handling of different sized crystalline silica particles