1. SAC Veterinary Services; Drummondhill, Stratherrick Road Inverness IV2 4JZ
2. FAO/WHO Centre for Brucellosis Reference and Research; OIE Brucella Reference Laboratory; Central Veterinary Laboratory; New Haw, Weybridge Surrey KT15 3NB
3. Aberdeen University; Department of Zoology; Lighthouse Field Station, Cromarty Ross-shire IV11 8YJ