PCV-2 Neighbor-Joining phylogenetic tree.

Neighbor-Joining phylogenetic tree reconstructed based on row genetic distances (i.e. pairwise p-distance) calculated on a collection of strains representative of the proposed PCV-2 genotypes. Both the cluster and genotype nomenclature are reported. Bootstrap support is displayed near the corresponding node. A tree reconstructed based on a more extensive sequence collection (n = 2610) is provided as S1 Fig.