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. 2017 Sep 21;9:78. doi: 10.1186/s13195-017-0303-5

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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. 1 — Principal component analysis score plots of targeted and untargeted metabolomic analyses. Cerebrospinal fluid (a, d), plasma (b, e) and brain tissue samples (c, f) of controls (black squares) and transgenic rats (blue, orange and pink triangles). Grey stars represent quality control samples. PC Principal component