Streptococcus pneumonia and Ampicillin (Omnipen)
Concentration
(μg/ml)
100
90
80
70
60
50
40
30
20
10
Ampicillin (Omnipen)
2
0.06
Ampicillin (Omnipen)
100
0.78
Ampicillin (Omnipen)
2
2
1
2
3
MIC50
MIC90
Strain Number