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Percent survival after 4 h of challenge at the given pH
| Bacterial strain | % Survival after 4 h ata:
|
|||||
|---|---|---|---|---|---|---|
| pH 4.50 | pH 4.25 | pH 4.00 | pH 3.50 | pH 3.25 | pH 3.00 | |
| B. pertussis TIΔtox | 1.07 ± 0.94 | 0.0001 ± 0.0001 | 0 ± 0 | ND | ND | ND |
| B. bronchiseptica BB 7865 | 55.9 ± 8.1 | ND | ND | 17.4 ± 10.6 | 0.0006 ± 0.0006 | 0.0001 ± 0.0001 |
Presented values are the means of three independent experiments with the standard deviations. ND, not determined.
