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14. Genetic and molecular characterization of beta-lactamase-negative ampicillin-resistant Haemophilus influenzae with unusually high resistance to ampicillin. Kaczmarek FS; Gootz TD; Dib-Hajj F; Shang W; Hallowell S; Cronan M Antimicrob Agents Chemother; 2004 May; 48(5):1630-9. PubMed ID: 15105114 [TBL] [Abstract][Full Text] [Related]
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