Neighbor-joining tree generated from a 726-bp sequence of the rpoB gene from Mycobacterium isolates from 42 cattle and selected reference strains. Bootstrap values (as a percentage of 1000 replicates) are indicated at nodes. Scale bar indicates evolutionary distance in base substitutions per site.
Higgins et al. BMC Veterinary Research 2011 7:77 doi:10.1186/1746-6148-7-77