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. 2018 Nov 5;1:184. doi: 10.1038/s42003-018-0189-1

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© The Author(s) 2018

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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Fig. 3 — Analysis of molecular features shared among all coral samples and their elemental composition. a A schematic Venn diagram of detected molecular features using the LC-QToF-MS at 0, 5, and 50 cm from Acropora sp. (green) or Platygyra sp. (purple). b Bar chart showing the elemental diversity in chemical formulae at the three-distance sample sets of Acropora sp. as predicted by their FT-ICR-MS exact masses and isotopic fine-structure patterns. The bar graphs show the total number of compounds and their predicted elemental composition. c, d Van Krevelen diagrams showing H/C vs O/C ratios of specific compounds unique to 0 and 5 cm only (c) or common to 0, 5, and 50 cm (d). Size of dots corresponds to compound abundance extracted from measured total ion current. Colors correspond to the elemental composition in panel (b)