Figure 3From: Characterization of small ruminant lentivirus A4 subtype isolates and assessment of their pathogenic potential in naturally infected goatsPhylogenetic analysis. Phylogenetic analysis of the isolated viruses based on the highly variable SU portion of env encompassing the SU4 and SU5 regions [16, 17]. The tree was constructed by the neighbor-joining method, and bootstrap values (1000 replicates) above 70% are considered to be significant. * designates the two SRLV A4 isolates described previously [14].Back to article page