Citrobacter koseri and Zosyn
Concentration
(μg/ml)
32
28.8
25.6
22.4
19.2
16
12.8
9.6
6.4
3.2
Zosyn
16
2
Zosyn
32
2
Zosyn
32
8
1
2
3
MIC50
MIC90
Strain Number