1. Agriculture
and Agri-Food Canada, Lethbridge Research Centre, Lethbridge, Alberta T1J 4B1, Canada
2. Alberta Agriculture and Rural Development, Lethbridge, Alberta T1J
4V6, Canada
3. School
of Environmental Sciences, University of Guelph Ridgetown Campus, Ridgetown, Ontario N0P 2C0, Canada
4. National
and OIE Reference Laboratory for Scrapie and CWD, Canadian Food Inspection Agency, Ottawa, Ontario K2H 8P9, Canada
5. School
of Public Health, University of Alberta, Edmonton, Alberta T6G 1C9, Canada
6. Canadian
and OIE Reference Laboratories for BSE, Canadian Food Inspection Agency Lethbridge Laboratory, Lethbridge, Alberta T1J 3Z4, Canada
7. Department
of Agriculture, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
8. Department
of Biological Science, University of Alberta, Edmonton, Alberta T6G 2E9, Canada