Streptococcus pneumonia and Chloramphenicol (Chloromycetin)
Concentration
(μg/ml)
4
3.6
3.2
2.8
2.4
2
1.6
1.2
0.8
0.4
Chloramphenicol (Chloromycetin)
4
0.25
Chloramphenicol (Chloromycetin)
4
4
1
2
MIC50
MIC90
Strain Number