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Growth and acid-tolerant characteristics of the wild-type strain S. mutans LT11 and acid-sensitive mutants
| Strain | Doubling time (min) | Yielda | Terminal pH during growth | Killing pHb | Lowest pH for growth initiation |
|---|---|---|---|---|---|
| Wild type | 56 ± 3 | 44.5 ± 1.2 | 4.50 ± 0.05 | 3.0 | 5.0 |
| BH97LC | 155 ± 15 | 29.2 ± 1.4 | 4.64 ± 0.08 | 3.5 | 6.5 |
| IS1A | 230 ± 15 | 23.2 ± 1.7 | 4.66 ± 0.08 | 3.5 | 6.5 |
Grams of cells (dry weight)/mole of glucose.
As measured by the absence of survivors following a 3-h incubation in TYEG.
