1. Interdisciplinary Program in Biomedical Sciences, College of Medicine, University of Florida, Gainesville, Florida 32611, USA
2. Department of Pathobiology, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32611, USA
3. Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32611, USA
4. Department of Biology, University of Central Florida, Orlando, Florida 32816, USA
5. Staatliches Veterinaruntersuchungsamt, Detmold 32758 Germany
6. The Institute for Animal Studies, Albert Einstein College of Medicine, Bronx, New York 10461, USA
7. Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, Florida 32611, USA