Staphylococcus epidermidis and Ampicillin (Omnipen)
Concentration
(μg/ml)
25
22.5
20
17.5
15
12.5
10
7.5
5
2.5
Ampicillin (Omnipen)
25
1.56
Ampicillin (Omnipen)
16
16
1
2
MIC50
MIC90
Strain Number