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. 2017 May 23;15:112. doi: 10.1186/s12967-017-1215-7

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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 — Resonance assignment of a representative ¹H-NMR spectrum of a plasma extract. Peaks 2-hydroxybutyrate (2-HB), 3-hydroxybutyrate (3-HB), acetate (Ac), alanine (Ala), citrate (Cit), creatine/phosphocreatine (Cr/CrP), creatinine (Crn), fucose (Fuc), glucose (Glc), glutamate (Glu), glutamine (Gln), isobutyrate (IsoB), isoleucine (Ile), isopropanol (IsoP), lactate (Lac), leucine (Leu), lysine (Lys), and N-acetyl group (A-g)