TABLE 2.
In vitro growth rates of pneumococcal strains
| Strain | Growth rate for conditiona: |
|||
|---|---|---|---|---|
| Glucose aerobic | Glucose anaerobic | Galactose aerobic | Galactose anaerobic | |
| D39 | 0.63 (0.02) | 0.45 (0.02) | 0.41 (0.01) | 0.33 (0.02) |
| SPD0420 M | 0.56 (0.06) | 0.4 (0.04) | 0.4 (0.03) | 0.1 (0) |
| SPD0420Comp | 0.55 (0.03) | 0.47 (0) | 0.35 (0.02) | 0.2 (0.03) |
| SPD1774 M | 0.6 (0) | 0.41 (0.008) | 0.22 (0.01) | 0.3 (0) |
| SPD0229 M | 0.6 (0) | 0.45 (0) | 0.41 (0.03) | 0.3 (0.03) |
| SPD0235 M | 0.62 (0.06) | 0.44 (0.07) | 0.43 (0.04) | 0.35 (0.03) |
a
Pneumococcal strains were grown in CDM containing the indicated sugars as the sole carbon source in aerobiosis or anaerobiosis. The mean rate, where rate is defined as the increase in optical density per hour, was calculated from three independent experiments. Values are the mean rate, with the standard deviation given in parentheses.