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. 2018 Apr 9;12:216. doi: 10.3389/fnins.2018.00216

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Copyright © 2018 Jaglin, Rhimi, Philippe, Pons, Bruneau, Goustard, Daugé, Maguin, Naudon and Rabot.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Elevated plus maze test in gnotobiotic rats mono-associated with the WT E. coli strain (“I+” rats) or with the mutant inactivated for the tnaA gene (“I−” rats). (A) Ratio of the time spent in open arms divided by the time spent in all arms, (B) Ratio of the number of visits in open arms divided by the number of visits in all arms, (C) Number of visits at the end of open arms, (D) Number of head dippings, (E) Number of self-groomings (n = 5–7 rats/group, Mann-Whitney test). Data are medians with interquartile ranges. ^*P < 0.05, ^**P < 0.01.