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. 2020 Jan 17;10:2971. doi: 10.3389/fimmu.2019.02971

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Copyright © 2020 De Picker, Fransen, Coppens, Timmers, de Boer, Oberacher, Fuchs, Verkerk, Sabbe and Morrens.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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IDO and GTP-CH1 neuroendocrine pathways. Both IDO and GTP-CH1 neuroendocrine pathways are upregulated by proinflammatory cytokines. Biological compounds indicated in orange are included as biomarkers in this study.