Phylogenetic analysis of VGI isolates.
2013-09-03T02:17:37Z (GMT) by
<p>The neighbor-joining tree was constructed using the maximum-likelihood model and reveals three well supported clades among VGI isolates. Bootstrap values (1000 replicates) are shown next to the branches. CA isolates are blue, Pacific Northwest isolates are red and Southeast US isolates are green.</p>