title: Ampicillin resistance in Haemophilus influenzae as determined by a rapid test for beta-lactamase production.
abstract: A rapid capillary tube method was used to demonstrate beta-lactamase production by ampicillin-resistant strains of Haemophilus influenzae.
authors.forename: C
authors.initials: C
authors.lastname: Thornsberry
authors.forename: L A
authors.initials: LA
authors.lastname: Kirven
mesh_terms: D000668:Ampicillin Resistance; D006193:Haemophilus influenzae / Q000187:drug effects* / Q000201:enzymology; D008826:Microbial Sensitivity Tests; D001618:beta-Lactamases / Q000096:biosynthesis*
chemical_list: D001618:beta-Lactamases