Table 3.
MICs of several antimicrobial agents against L. monocytogenes strains.
| Strain | MIC (μg/ml) |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| CIP | CIP + RES | AMP | ERY | KAN | CHL | TET | EtBr | EtBr + RES | BC | BC + RES | |
| HL06 | 0.5 | ND | 1 | 0.125 | 2 | 4 | 0.5 | 25 | ND | 6 | ND |
| HL06CIP1 | 1 | 1 | 1 | 0.125 | 2 | 4 | 0.5 | 50 | 25 | 6 | 2 |
| HL06CIP2 | 2 | 1 | 1 | 0.125 | 2 | 4 | 0.5 | 50 | 25 | 6 | 2 |
| HL06CIP3 | 2 | 1 | 1 | 0.125 | 2 | 4 | 0.5 | 50 | 25 | 6 | 2 |
| HL06CIP4 | 8 | 2 | 1 | 0.125 | 2 | 4 | 0.5 | 200 | 50 | 6 | 2 |
| HL06CIP4Δlde | 4 | 2 | 1 | 0.125 | 2 | 4 | 0.5 | 100 | 50 | 6 | 2 |
| HL06CIP4ΔmdrL | 8 | 2 | 1 | 0.125 | 2 | 4 | 0.5 | 200 | 50 | 6 | 2 |
| HL06CIP4ΔlexA | 8 | 2 | 1 | 0.125 | 2 | 4 | 0.5 | 200 | 50 | 6 | 2 |
| CHL06CIP4Δlde | 8 | ND | 1 | 0.125 | 2 | 4 | 0.5 | 200 | ND | 6 | ND |
| HL06CIP4Δlde-pERL3 | 4 | ND | 1 | 0.125 | 2 | 4 | 0.5 | 100 | ND | 6 | ND |
CIP, ciprofloxacin; RES, reserpine; AMP, ampicillin; ERY, erythromycin; KAN, kanamycin; CHL, chloramphenicol; TET, tetracycline; BC, benzalkonium chloride; ND, not determined.