Fig. 2

PK susceptibility ratio for the mild and stringent digestion conditions of samples from the pre-1975 scrapie pool compared to BSE. Controls comprise a UK classical BSE (C-type) sample (two analyses of the same sample and mean) and a UK L-type BSE sample (two analyses of the same sample and mean). Detection with mAbs Sha31 and 6H4. The case that provided the inoculum for bank voles and mice is underlined.