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. 2016 Feb 11;18:47. doi: 10.1186/s13075-016-0942-0

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© Luo et al. 2016

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. 2 — Correlation between the frequency of programmed death ligand 1 (PD-L1)-expressing neutrophils with autoantibody. a The frequency of PD-L1-expressing neutrophils was significantly increased in systemic lupus erythematosus (SLE) patients with a high antinuclear antibodies (ANA) titer (ANA >1:320) compared to SLE patients with low-to-medium ANA titer (ANA ≤1:320) (P <0.0001). b The frequency of PD-L1-expressing neutrophils was significantly increased in SLE patients who were positive to anti ribonucleoprotein/Smith (anti-nRNP/Sm) (P = 0.007)