An unrooted phylogenetic tree of Proteobacteria and related bacteria. This tree shows the left half of Figure 1, including a number of additional genomes. The numbers associated with edges give bootstrap support as before; the best supported alternative choices are shown dashed. This tree slightly favors breaking the Spirochaetes/Chlamydiales clade of Figure 1.
Bern and Goldberg BMC Evolutionary Biology 2005 5:34 doi:10.1186/1471-2148-5-34