* Oral inoculations occurred between 4–6 mo of age. Each animal received 5 g of bovine BSEinfected brain by oral route .
† Positive in tonsil and RLN.
‡ 1+, weak signal for all three PrPres bands. 2+ PrPres bands clearly visible. Results after concentration obtained with either of the antibodies 9A2 or L42; antibody 12B2 scored negative in all samples.
¶ Weakly positive in tonsil and ileal Peyer's patches.