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Vaccination with the choline-free strain D39ChiplicB31 induces serotype-specific protection
| No. of mice vaccinated with 104 CFU of D39ChiplicB31 (day 1) | Day 10
|
Day 25
|
||
|---|---|---|---|---|
| Challenge with: | Survival | Challenge with: | Survival | |
| 4 | D39, 104 CFU | 3/4 | SV36, 104 CFU | 0/3 |
| 4 | D39, 106 CFU | 4/4 | SV36, 104 CFU | 0/4 |
| 4 | SV36, 104 CFU | 0/4 | ||
| 4 | SV36, 106 CFU | 0/4 | ||
