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. 2016 Aug 23;7:1306. doi: 10.3389/fmicb.2016.01306

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Copyright © 2016 Abbadi, Fusaro, Ceolin, Casarotto, Quartesan, Dalla Pozza, Cattoli, Toffan, Holmes and Panzarin.

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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ML phylogenetic tree of IHNV based on the complete G gene. The Italian strains are highlighted in yellow and labeled according to their water basin of origin as indicated in the “Water catchments” column. IHNV genotype subdivision is designated by vertical bars. The colored box represents the identified genetic group (A) within genogroup E. For the Italian strains under investigation, the water basin of origin has been indicated. The numbers at nodes represent bootstrap values (only values >70% are reported), while branch lengths are scaled according to the number of nucleotide substitutions per site. The scale bar is reported. The numbers within the red boxes represent the amino acid substitutions occurring along the branches. The tree is mid-point rooted for clarity only.