Atypical/Nor98 scrapie: properties of the agent, genetics, and epidemiology Sylvie L. Benestad, Jean-Noël Arsac, Wilfred Goldmann and Maria Nöremark Vet. Res., 39 4 (2008) 19 Published online: 11 January 2008 DOI: 10.1051/vetres:2007056