Inoculum N/N0a Survival rate (%) Mean time of survival (days)
Sterilized distilled water 0/6 100 >453
1% SBH without heat treatment 4/4 0 168.5
1% SBH* 6/6 0 255.7
1% SBH* + 2 μg/mL Tk-subtilisin 6/6 0 262.7
1% SBH* + 1 % SDS 1/6 83.3 >420
1% SBH* + 2 μg/mL Tk-subtilisin + 1% SDS 0/6 100 >453
aN/N0, number of mice that developed infection per number of inoculated mice.
*Samples were heat treated at 100°C for 1 hr.
Table 1: Survival times for mice infected with scrapie (Chandler strain).