AXRL - Ligios,C.; Maestrale,C.; Attene,S.; Sechi,S.; Galistu,A.; Santucciu,C.; Cancedda,M.G.; Saba,M.; Patta,C.; Bandino,E.; Demontis,F.; Uras,P.; Carta,A. - Mutations at Codons 137, 141, 154 and 176 of the PRNP Gene Significantly Decrease the Susceptibility to Scrapie in ARQ/ARQ Sheep - International Conference - Prion 2007 (26.-28.9.2007) Edinburgh International Conference Centre, Edinburgh, Scotland, UK - Book of Abstracts: Epidemiology, Risk Assessment and Transmission P04.23