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. 2017 Dec 11;7:17352. doi: 10.1038/s41598-017-17402-1

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Positive ion LC-MS data from lipid standard mixture of PG(18:1/18:1) and BMP(18:1/18:1). (a) Extracted ion chromatogram displaying the retention times of m/z 781.55. (b) MS/MS spectrum from the peak eluting first at 21.6 minutes indicating fragments corresponding to the BMP lipid standard. (c) MS/MS spectrum from the peak eluting second at 22.3 minutes indicating fragments corresponding to the PG lipid species