Figure 4.

An unrooted phylogenetic tree of Firmicutes, Actinobacteria, and Cyanobacteria. Chlorobium and Bacteroides were included here and in Figure 2 in order to orient the trees relative to each other.

Bern and Goldberg BMC Evolutionary Biology 2005 5:34   doi:10.1186/1471-2148-5-34
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