Figure 3.

Gene content tree constructed for 66 species included in the COG database on the basis of the patterns of presence-absence in the COGs. The Thermus-Deinococcus clade is marked by bold type. Black, bacteria; yellow, archaea; blue, eukaryotes.

Omelchenko et al. BMC Evolutionary Biology 2005 5:57   doi:10.1186/1471-2148-5-57
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