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. 1999 Apr;43(4):862–867. doi: 10.1128/aac.43.4.862

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FIG. 1

Comparative distributions of ampicillin-sulbactam (a and b) and amoxicillin-clavulanate (c, d, and e) MICs for E. coli isolates with different β-lactam susceptibility phenotypes. □, S; ▨, TL; ▩, TI; █, TH-IRT; ▥, ESβL; Inline graphic, CP. (a) Ampicillin-sulbactam agar dilution (fixed concentration, 8 μg/ml). (b) Ampicillin-sulbactam agar dilution (fixed ratio, 2:1). (c) Amoxicillin-clavulanate agar dilution (fixed concentration, 2 μg/ml). (d) Amoxicillin-clavulanate agar dilution (fixed concentration, 4 μg/ml). (e) Amoxicillin-clavulanate agar dilution (fixed ratio, 2:1).