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. 2019 Mar 12;20:54. doi: 10.1186/s12931-019-1011-4

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 4 — CXCR5 + CD8+ T cells could have diagnostic value when assessing the severity of bacterial respiratory infections. The optimal PCT, ratio of CXCR5 + CD8 + T cell and combination indicating exacerbation of CAP and HAP was analyzed