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. 2013 May 21;4(3):e00039-13. doi: 10.1128/mBio.00039-13

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Copyright © 2013 Chuang et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-ShareAlike 3.0 Unported license, which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original author and source are credited.

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FIG 4 — M. tuberculosis ppk2 deficiency alters cytokine and chemokine release by naive macrophages by immunobead cytokine assays. Cytokines and chemokines released by naive macrophages 72 h after infection with the wild-type, ppk2::Tn, and ppk2::Tn Comp strains. Cytokine levels were normalized to total protein content of the culture supernatant. The values for all cytokines were significantly different (P < 0.05) comparing the value for the ppk2::Tn mutant with the value of the wild type. Three biological replicate samples were used for each strain in each experiment.