Streptococci (β-hemolytic) and Tetracycline (Sumycin, Achromycin V, Steclin)
Concentration
(μg/ml)
8
7.2
6.4
5.6
4.8
4
3.2
2.4
1.6
0.8
Tetracycline (Sumycin, Achromycin V, Steclin)
8
2
Tetracycline (Sumycin, Achromycin V, Steclin)
8
8
Tetracycline (Sumycin, Achromycin V, Steclin)
8
8
1
2
3
MIC50
MIC90
Strain Number