title: Concept of a bacterium still valid in prokaryote debate.
authors.forename: Thomas
authors.initials: T
authors.lastname: Cavalier-Smith
mesh_terms: D001419:Bacteria / Q000145:classification* / Q000166:cytology / Q000235:genetics; D002965:Classification; D019143:Evolution, Molecular; D022761:Gene Transfer, Horizontal; D011387:Prokaryotic Cells / Q000145:classification* / Q000166:cytology; D015203:Reproducibility of Results; D013045:Species Specificity; D009626:Terminology as Topic