Fig. 2

Maximum likelihood phylogenetic tree of BLV env partial sequences from different geographical locations worldwide. A maximum likelihood phylogenetic tree was constructed from 35 distinct 475 bp BLV env sequences (submitted to the GenBank nucleotide sequence database and assigned accession numbers LC075543–LC075577) and with 74 sequences from known BLV strains, representing eight different BLV genotypes from other South American countries, including Argentina, Brazil, Chile, and Uruguay, and other parts of the world. These 74 nucleotide sequences were obtained from the GenBank nucleotide sequence database. The South American BLV strains in this study are indicated by sample ID and location of collection. Other isolates are shown in the tree by accession number and country of origin. South American BLV strains in this study are marked according to the country of origin as follows: Peru (filled triangle), Paraguay (filled circle), and Bolivia (filled diamond). Genotypes are indicated by numbers to the right of the figure. Genotypes-1, -2, -3, -4, -5, -6, -7, -8 and -9 are shown in pastel blue, violet, sea green, blue, pink, twilight violet, avocado green, brown and orange, respectively. The bar at the bottom of the figure denotes distance