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. 2018 Sep 4;18:106. doi: 10.1186/s12866-018-1247-z

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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. 4 — Transepithelial resistance measurements. Polarized Detroit562 monolayers were grown on transwells and infected with C. diphtheriae strains CDC-E8392 (▲) and CAM-1 (●) (a); CDC-E8392 pXMJ19_DIP0733 (◭) and CAM-1 pXMJ19_DIP0733 (◐) (b); CAM-1 pXMJ19_Cg0896 (⊙), CAM-1 pXMJ19_DIP0733-cc (◒) and CAM-1 pXMJ19_Cg0896 + cc (◑) (c). For control, cells were incubated without (Δ) bacteria and (□) S. Typhimurium (a-c). Experiments were carried out independently in triplicate and typical results are shown