Fig. 2

Phylogenetic relationships among cardioviruses based on the alignment of the nucleotide sequences of the P1, and P2 + P3 coding regions. a Phylogenetic analysis based on the P1 region. b Phylogenetic analysis based on the P2 and P3 regions. An unrooted tree was reconstructed using the neighbor-joining algorithm implemented in MEGA 6.0. Strain names and GenBank accession numbers of cardioviruses were shown. Scale bar indicated nucleotide substitution per site. Bootstrap valued (based on 1000 replicates) for each node are given