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.
BMC Evol Biol. 2005; 5: 57.
Published online 2005 October 20. doi: 10.1186/1471-2148-5-57.
