1. Animal and Bioscience Research Department; Teagasc, Moorepark, Fermoy; Co. Cork Ireland
2. School of Veterinary Medicine; University College Dublin; Dublin 4 Ireland
3. Surveillance; Animal By Products and TSE Division; Department of Agriculture, Food and the Marine; Backweston Celbridge Co. Kildare Ireland
4. Blood Testing Laboratory; Department of Agriculture, Food and the Marine; Model Farm Road Cork Ireland