1. Bacterial Diseases of Livestock Research Unit (Palmer, Kanipe), Animal Resources Unit (Cox), National Animal Disease Center, Agricultural Research Service
2. National Veterinary Services Laboratories, Animal and Plant Health Inspection Service, U.S. Department of Agriculture, Ames, IA (Robbe-Austerman, Thacker)
3. Immunobiology Graduate Program, College of Veterinary Medicine, Iowa State University, Ames, IA (Kanipe)