title: Bacteriophage-typing designations of Salmonella typhimurium.
abstract: The phage-typing scheme of Callow (1959) has been extended. The original number of types was 34; this has now risen to 207. Tables are presented which show the provisional type designations and the definitive designations now being introduced.
mesh_terms: D001434:Bacteriophage Typing; D012486:Salmonella typhimurium