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. 2020 Apr 3;10:5913. doi: 10.1038/s41598-020-62699-0

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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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Analysis of NPY-KO and wild-type zebrafish behaviour. (A) Apparatus used in the mirror test. (B) Tracking of wild-type (left) and NPY-KO (right) zebrafish during analysis. (C) Total distance travelled. (D) Total number of interaction with the mirror. (E) Total time of interaction with the mirror. N = 15. Results are shown as means ± standard errors of three independent experiments. Columns having the same letter were not statistically different, vice versa.