Figure 3
Phylogenetic tree of a 380bp region of Npro. All field isolates are denoted by “Farm Number – PI Number”. Twenty five reference strains are included (underlined) each beginning with the genotype and sub-genotype to which they belong (1a-1m and 2) followed by their name; further details can be found in Table 3. Bootstrap figures supported by >70% of 1000 replicates are indicated.