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. 2019 Aug 5;20:26. doi: 10.1186/s12865-019-0308-x

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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 — The frequency of cTfr cells, cTfh to cTfr ratio and the expression of ICOS between DSA positive group and stable group. Squares refer to donor specific antibody (DSA) group, cycles refer to stable renal function group; a cTfr: CXCR5⁺Foxp3⁺ on CD4⁺ cells; b cTfh to cTfr ratio; c CXCR5⁺ICOS⁺ on CD4⁺ cells; d ICOS⁺ on CXCR5⁺CD4⁺