title: Selective testing of ß-galactosidase activity in the laboratory identification of Salmonella and Shigella species.
authors.affiliation: Department of Clinical Microbiology, University College London Hospital, London, UK. samuel.boadi@uclh.nhs.uk
authors.forename: Samuel
authors.initials: S
authors.lastname: Boadi
authors.forename: Mike W D
authors.initials: MW
authors.lastname: Wren
authors.forename: Stephen
authors.initials: S
authors.lastname: Morris-Jones