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. 2015 Dec 23;6:1425. doi: 10.3389/fmicb.2015.01425

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Copyright © 2015 Skennerton, Ward, Michel, Metcalfe, Valiente, Mullin, Chan, Gradinaru and Orphan.

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) or licensor 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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Maximum likelihood phylogenetic tree of NirK from reference genomes and B42. Nodes with greater than 70 or 90% bootstrap support are indicated with a gray or black circle, respectively. Scale bar indicates substitutions per site.