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. 2021 Oct 21;11:20866. doi: 10.1038/s41598-021-00286-7

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© The Author(s) 2021

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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COVID-19 infection and abundance of selected metabolites. A comprehensive over view of levels, as measured by peak area, of metabolites in COVID-19-infected and control samples as measured by LC–MS/MS IDA analysis utilizing the m/z inclusion list provided from the loading component of PCA analysis. Each spot represents a metabolite as defined in the inclusion list, the Y axis represents the peak area detected for each m/z ion across the analyzed uninfected and COVID-19-infected samples X- axis.