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. 2018 Mar 16;18:133. doi: 10.1186/s12879-018-3007-y

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© The Author(s). 2018

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. 3 — TMK host specific IgM levels among the NTB controls and TB exposed house-hold contacts. This figure shows TMKmt host specific IgM levels among the 9 NTB controls (American donors) and 40 TB exposed house-hold contacts. IgM levels were found to be within the same range across both categories. This is consistent with TB epidemiology and immune-pathogenesis wherein exposure occurs early and is followed by M.tb host-specific IgM responses that last only about 1 to 3 months; being replaced by IgG antibodies