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Phenotypic comparisons between hemolytic and nonhemolytic GAS
| Strain | Assay result
|
||
|---|---|---|---|
| Caseinase (mm)a | DNase (mm)a | Hyaluronic acid (fg/CFU) | |
| MGAS166s | 12.8 ± 1.3 | 15.1 ± 0.9 | 2 |
| SBNH5 | 12.2 ± 1.1 | 16.3 ± 1.3 | 3.1 |
| T18Ps | 0 | 16.1 ± 1.6 | 68 |
| SB30-2 | 0 | 17.4 ± 2.0 | 54 |
Results are diameters of zones surrounding the inoculum after overnight anaerobic incubation of assay plates at 37°C. Measurements are means ± SD of three experiments.
