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. 2020 Aug 11;10:13511. doi: 10.1038/s41598-020-70371-w

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fear conditioning test. Similar mean percentage of freezing during CS presentation on the conditioning day (A) and during the 30 s preceding the first CS presentation of the first extinction day in another context (B) for both groups. pMBRT rats had a lower mean percentage of freezing than control rats during CS presentation on the first extinction day (C), but not on the second extinction day (D). The data are presented as the mean ± SEM; *p < 0.05.