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. 2015 Oct 23;6:880. doi: 10.3389/fpls.2015.00880

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Copyright © 2015 Nikonorova, Vu, Czyzewicz, Gevaert and De Smet.

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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Phylogenetic tree of CR4 family. The CR4 family clades are indicated, in addition to the EFR outgroup and possibly proteins “ancestral” to the CR4 family.