Volume 18, Number 1—January 2012
Research
Serious Invasive Saffold Virus Infections in Children, 2009
Figure 1

Figure 1. Phylogenetic tree based on full-genome sequences of all known human picornavirus species, represented with 1 virus strain each. The tree was constructed by the neighbor-joining method by using MEGA4 software (www.megasoftware.net). Scale bar indicates nucleotide substitutions per site.
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