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Table 2 Calculations of the LD50 values of the WT and A.H.Δalr strains tested in common carp

From: Knockout of alanine racemase gene attenuates the pathogenicity of Aeromonas hydrophila

Dose of challenge (CFUs) Number of deaths Survival rate (%)
WT A.H.Δalr WT A.H.Δalr
8 × 108 6 5 0 17
5 × 108 6 3 0 50
3 × 108 5 1 16 83
1.5 × 108 3 0 50 100
1 × 108 2 0 67 100
LD50 (108) 1.4 5.1