Figure 1
From: Comparative study of codon substitution patterns in foot-and-mouth disease virus (serotype O)

Phylogenetic tree based on the VP1 genes of FMDVs (serotype O) isolated from 34 countries. Branch lengths are drawn to scale, with the bar indicating 0.1 nucleotide replacements per site, and bootstrap values (%) based on the Neighbor-Joining method of 1,000 re-sampled datasets that are not 100% are shown in each node. VP1 sequences which were selected for the visualization of the codon substitution patterns in Figure 3 are marked in bold italic.