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. 2023 Jan 5;13:186. doi: 10.1038/s41598-022-26515-1

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© The Author(s) 2023

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Heat map of the 50 most expressed metabolites amongst our four experimental groups of workers of Lasius niger. At the top, colours indicate the age (orange: young, light blue: old) and caste (pink: nest workers, purple: foragers). The left column indicates the metabolite class. Grey means that the metabolite class remains unknown. At the bottom are the sample identifiers (F: forager, NW: nest worker, Y: young, O: old). Metabolite IDs are given in the right-hand column. Correspondence between ID and name is indicated in every table provided. All metabolites presented here have an FDR < 0.05 and |fold-change| > 2.