1. Departments of Small Animal Clinical Sciences (Bradbury, Saunders, Heatley) and Veterinary Pathobiology (Russell), College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas 77843-4474; the
2. Infectious Diseases Laboratory Zoo and Exotics Pathology Services (Gregory), Department of Small Animal Medicine, College of Veterinary Medicine, The University of Georgia, Athens, Georgia 30602
3. Preclinical Services Department (Wilcox), Charles River Laboratories, 6995 Longley Lane, Reno, Nevada 89511
4. From the