Citrobacter koseri and Imipenem
Concentration
(μg/ml)
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Imipenem
0.25
0.25
Imipenem
1
0.25
Imipenem
1
0.5
Imipenem
1
1
1
2
3
4
MIC50
MIC90
Strain Number