1. Department of Biomedical Engineering University at Buffalo State University of New York Buffalo NY 14260 USA
2. Texas Biomedical Research Institute San Antonio TX 78227 USA
3. Animal Diagnostic Laboratory Department of Veterinary and Biomedical Sciences Pennsylvania State University University Park PA 16802 USA
4. Department of Anatomy and Cell Biology McGill University Montreal Quebec H3A 0C7 Canada
5. Immunology and Pathogenesis Branch Centers for Disease Control and Prevention 1600 Clifton Road Atlanta GA 30329‐4027 USA
6. Department of Microbiology and Immunology University at Buffalo State University of New York Buffalo NY 14203 USA
7. Animal Diagnostic Laboratory Department of Veterinary and Biomedical Sciences The Center for Infectious Disease Dynamics The Pennsylvania State University University Park PA 16802 USA
8. Department of Anesthesiology Department of Pathology and Anatomical Sciences University at Buffalo State University of New York Buffalo NY 14203 USA