Table 1.
Inoculum | Treatment | Initiate dosing, dpi | Mean incubation period ± SEM, d | n/n0* | Survival index ± SEM |
RML | Vehicle | — | 118 ± 1 | 12/12 | 100† |
IND24 | 1 | 204 ± 5 | 12/12 | 173 ± 4 | |
IND24 | 60 | 211 ± 1 | 6/6 | 179 ± 1 | |
RML | IND81 | 1 | 193 ± 3 | 11/11 | 164 ± 3 |
RML[IND24]‡ | Vehicle | — | 187 ± 13 | 9/9 | 158 ± 13 |
IND24 | 1 | 166 ± 5 | 8/8 | 141 ± 5 | |
RML[IND24]‡ | Vehicle | — | 188 ± 0 | 3/3 | 159 ± 1 |
IND24 | 1 | 165 ± 5 | 5/5 | 140 ± 5 | |
RML[IND24;IND24] | IND24 | 1 | 158 ± 0 | 5/5§ | 134 ± 1 |
RML[IND24;V] | Vehicle | — | 113 ± 5 | 7/7 | 96 ± 5 |
ME7 | Vehicle | — | 126 ± 2 | 5/5 | 100† |
IND24 | 1 | 214 ± 4 | 9/9 | 170 ± 4 | |
IND24 | 60 | 158 ± 5 | 7/7 | 125 ± 5 | |
ME7[IND24] | Vehicle | — | 123 ± 1 | 8/8 | 98 ± 2 |
IND24 | 1 | 183 ± 3 | 6/6 | 145 ± 3 |
n, number of ill mice; n0, number of inoculated mice.
Vehicle-treated control used to calculate survival index.
Inocula from two independent treatment experiments.
All mice showed clinical signs of prion disease, but were also suffering from an intercurrent peritonitis when euthanized.