FIG 2.

Phylogenetic analysis was performed based on the nucleotide sequences of ALV-J gp85 gene. (A) Two radial trees were constructed based on the gp85 sequences (n = 572) to identify the first-order clades with IQ-TREE (right) and RAxML (left) software, respectively. (B) Two radial trees were constructed based on the gp85 sequences (n = 530) to identify the second-order clades of Clade 1 with IQ-TREE (right) and RAxML (left) software, respectively. The trees were drawn to scale, with branch lengths measured in the number of substitutions per site.