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. 2015 Oct 15;5:15223. doi: 10.1038/srep15223

Figure 1. Hierarchical clustering with complete linkage of 40 strains based on the first four principal components.

Figure 1

Clades or Lineages were defined previously on the basis of a partial VP1 sequence and a 5′UTR region sequence2,3. The five main clusters are shown in numbers, and Cluster 5 is indicated as a new clade on the basis of our whole-genome sequence analysis.