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. 2017 Nov 30;10:252. doi: 10.1186/s13068-017-0937-3

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© The Author(s) 2017

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. 4 — CSLM micrographs of solids produced by CELF (left) and DA (right) pretreatment of corn stover (top) and Populus (bottom). Micrographs are of oblique tissue cross sections. Arrows indicate regions of dislocation and fracturing and arrowheads point out coalesced lignin