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. 2018 Feb 27;18:63. doi: 10.1186/s12886-018-0729-y

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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 — Metabolic variation between the controls and patients after PPV. a Heat map representation of 263 metabolites detected in 20 AH samples, showing 6 classes by clustering analysis. Each line represents one metabolite. The deeper the green color, the lowest its content in the AH sample; similarly, the deeper the red color, the highest its content in the AH sample. b PLS-DA score plot for the first two components (t[2] / t[1]) model for the controls and patients after PPV. c PLS-DA S loading plot for the two first components (w*c[2] / w*c[1]) for the controls and patients after PPV. Metabolites responsible for separation are labeled with red triangle