title: Uprooting the tree of life.
authors.affiliation: Dalhousie University, Halifax, Nova Scotia.
authors.forename: W F
authors.initials: WF
authors.lastname: Doolittle
mesh_terms: D001105:Archaea / Q000145:classification; D001419:Bacteria / Q000145:classification; D005075:Biological Evolution; D005057:Eukaryotic Cells / Q000145:classification; D008954:Models, Biological; D010802:Phylogeny; D011387:Prokaryotic Cells / Q000145:classification; D013559:Symbiosis