TABLE 1.
Antibiotic tolerance of biofilms of P. aeruginosa strain PAO1
| Model system | Agenta | Log reduction in: |
Tolerance factorb | Reference | |
|---|---|---|---|---|---|
| Biofilm cells | Planktonic cells | ||||
| Drip-flow | TOB | 0.72 | 3.18 | 4.4 | 2 |
| Drip-flow | CIP | 1.37 | 4.84 | 3.5 | 2 |
| Colony biofilm | TOB | 0.52 | 5.67 | 10.9 | 3 |
| Colony biofilm | CIP | 1.13 | 5.05 | 4.5 | 3 |
| Silicone tube | TOB | 0.35 | 3.20 | 9.1 | 4 |
a
TOB, tobramycin; CIP, ciprofloxacin.
b
The tolerance factor is the log reduction in viable counts for planktonic cells divided by the log reduction in viable counts for biofilm cells.