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. 2015 Feb 14;15:59. doi: 10.1186/s12879-015-0796-0

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© Wyndham-Thomas et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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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Multiplex analysis of culture supernatants. A panel of cytokines and chemokines were measured in the culture supernatants of (A) PPD-stimulated peripheral blood mononuclear cells (PBMC), (B) HBHA-stimulated PBMC and (C) the TB Antigen tube of the QFT-GIT. Median concentrations with interquartile ranges are represented in the graph. Results between subjects with a positive LTBI screening (n = 11), subjects with a negative LTBI screening (n = 8) and active TB patients (n = 6) were compared using Mann–Whitney U test or Kruskall-Wallis test. Significant p values are shown.