Table 1 Determination of the LD50 in PmCQ2 and PmCQ2Δ4555–4580
From: Attenuated vaccine PmCQ2Δ4555–4580 effectively protects mice against Pasteurella multocida infection
PmCQ2 | Infection dose (CFU) | 75 | 19 | 5 | 2 | 1 |
|---|---|---|---|---|---|---|
Euthanized/total mice | 8/8 | 8/8 | 7/8 | 6/8 | 5/8 | |
LD50 = 0.692 CFU | ||||||
PmCQ2Δ4555–4580 | Infection dose (CFU) | 7.57 × 109 | 3.79 × 109 | 1.89 × 109 | 9.46 × 108 | 4.73 × 108 |
Euthanized/total mice | 8/8 | 7/8 | 5/8 | 0/8 | 0/8 | |