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. 2021 Nov 15;15:785265. doi: 10.3389/fncel.2021.785265

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Copyright © 2021 Lipovsek, Marcovich and Elgoyhen.

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(s) 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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Phylogenetic tree showing the relationships between vertebrate nicotinic subunits. The branches corresponding to the same subunits of different species were collapsed to their respective node. The length of each triangle denotes sequence divergence from the corresponding node. Triangle shades depict the average sequence identity within the branch. Numbers in each branch indicate bootstrap values obtained during phylogeny construction. The scale bar indicates the number of amino acid substitutions per site. Modified from Marcovich et al. (2020), under the Creative Commons license (http://creativecommons.org/licenses/by/4.0/).