Streptococcus pneumonia (penicillin-intermediate) and Ampicillin (Omnipen)
Concentration
(μg/ml)
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
Ampicillin (Omnipen)
2
0.5
Ampicillin (Omnipen)
2
0.5
Ampicillin (Omnipen)
2
0.5
1
2
3
MIC50
MIC90
Strain Number