Characterization and Prevalence of a New Porcine Calicivirus in Swine, United States
Figure 2. Neighbor-joining phylogenetic tree of St-Valerien–like viruses based on the predicted capsid viral protein 1 sequences (516 aa). The newly identified US St-Valerien–like virus strains are in boldface. The GenBank accession number of each strain is within parentheses. Bootstrap values are shown near branches. Rhesus monkey Tulane calicivirus was an outgroup control. Scale bar indicates amino acidsubstitutions per site.