| Mean MIC μg ml-1 ± SE | |||
---|---|---|---|---|
 | P. aeruginosa ATCC 9027 | P. aeruginosa 867 | ||
 | Rifampicin | Imipenem | Rifampicin | Imipenem |
Progenitor strain | 13.3 ± 2.6 | 2.6 ± 0.6 | 8 ± 0 | 13.3 ± 2.6 |
Recovered isolate | 32 ± 0 | 13.3 ± 2.6 | 21.3 ± 5.3 | 32 ± 0 |
p- value | <0.05 | <0.05 | <0.05 | <0.05 |