title: Tetracyclin-stimulated expression of ampicillin resistance in Haemophilus influenzae.
abstract: Tetracycline at a low concentration stimulated the expression of ampicillin resistance in certain strains of Haemophilus influenzae.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology*; D006193:Haemophilus influenzae / Q000187:drug effects* / Q000235:genetics / Q000502:physiology; D010403:Penicillin Resistance; D010957:Plasmids; D013752:Tetracycline / Q000494:pharmacology*; D001618:beta-Lactamases / Q000096:biosynthesis
chemical_list: D000667:Ampicillin; D001618:beta-Lactamases; D013752:Tetracycline