title: In-vitro selection of ampicillin-resistant non-beta-lactamase-producing Haemophilus influenzae strains.
authors.forename: F
authors.initials: F
authors.lastname: Espinasse
authors.forename: P
authors.initials: P
authors.lastname: Nordmann
authors.forename: M C
authors.initials: MC
authors.lastname: Commare
mesh_terms: D000668:Ampicillin Resistance / Q000502:physiology*; D001431:Bacteriological Techniques; D006193:Haemophilus influenzae / Q000187:drug effects* / Q000201:enzymology; D001618:beta-Lactamases / Q000096:biosynthesis*
chemical_list: D001618:beta-Lactamases