TABLE 1.
Susceptibility patterns of ciprofloxacin-resistant mutants compared to wild typea
Strain (no. of isolates) | MIC (μg/ml) of:
|
|||
---|---|---|---|---|
Cip | Cip + R | EtBr | EtBr + R | |
Wild type (ATCC 49619) | 0.5 | 0.25 | 4 | 0.25 |
Efflux (8) | 4–8 | 0.25–1 | 16 | 0.125–0.25 |
Nonefflux (2) | 4 | 2 | 4 | 0.125–0.25 |
R insensitive (3) | 4–8 | 4–8 | 2–4 | 0.125–0.5 |
R, reserpine; EtBr, ethidium bromide; Cip, ciprofloxacin.