Table 5.:
Number of Strains Associated with Each 50% Lethal Dose Interval. These Values Presented are as Percentages
LD
50
Assay
Group
LD
50
> 10
10
LD
50
= 10
9
- 10
7
LD
50
= 10
6
- 10
5
N
100.0
0.0
0.0
S
41.7
45.8
12.5
H
0.0
100.0
0.0
O
100.0
0.0
0.0
N = commensal strains (AFEC), S = septicemia strains, H = swollen head syndrome strains, O = omphalitis strains.