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. 2017 Mar 15;7:44466. doi: 10.1038/srep44466

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Copyright © 2017, The Author(s)

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/

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MALDI-TOF MS spectra of a mixture of four standard phospholipid species in positive mode using (a) DHB and (b) GO as matrix. Among the mixture, the molar ratio of PC (20:1/20:1), PE (16:0/16:0), PG (18:1/18:1) and PS (16:0/18:2) was 8:4:1:2.