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. 2017 Jan 25;48:3. doi: 10.1186/s13567-016-0407-0

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© The Author(s) 2017

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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Gastrointestinal tract colonization in adult mice. The mice were gavaged with 1.5 × 10⁸ CFU of E. coli K46 (tetracycline resistant) or the reference strain UPEC strain CFT073-Clm^R (chloramphenicol resistant). The colonization was assessed at each of the indicated time points by enumerating CFU per gram feces of the inoculated strains. Data represent CFU/g feces ± SEM (n = 5 mice).