| Microorganism |
MIC50
(μg/ml) |
MIC90
(μg/ml) |
Range
(μg/ml) |
Antimicrobial |
Reference |
| Streptococci (β-hemolytic) |
>2 |
>8 |
<2 － >8 |
Tetracycline (Sumycin, Achromycin V, Steclin) |
6 |
| Streptococci (β-hemolytic) |
>8 |
>8 |
≤2 － >8 |
Tetracycline (Sumycin, Achromycin V, Steclin) |
472 |
| Streptococci (β-hemolytic) |
>8 |
>8 |
? － ? |
Tetracycline (Sumycin, Achromycin V, Steclin) |
39 |