Table 2.
FIC indices of some combinations of ampicillin and 9EA-FC-B for MRSA.
| Ampicillin (μg mL−1) | 9EA-FC-B (mg mL−1) | ||
|---|---|---|---|
| 1/4 × MIC (0.75) | 1/8 × MIC (0.38) | 1/16 × MIC (0.19) | |
| 1/2 × MIC (25) | 0.75 | 0.65 | 0.56 |
| 1/4 × MIC (12.5) | 0.43 | 0.36 | 0.31 |
| 1/8 × MIC (6.25) | 0.38 | 0.25 | — |
| 1/16 × MIC (3.125) | 0.31 | 0.19 | — |
| 1/32 × MIC (1.563) | 0.28 | — | — |
| 1/64 × MIC (0.781) | — | — | — |
Values represent triplicates of three independent experiments. Index interpretation: ≤0.5 = synergy, >0.5 but ≤4.0 = indifference, and >4 = antagonism. (MIC = minimum inhibitory concentrations; — = no activity.)