1. Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
2. Purdue Institute for Immunology, Inflammation and Infectious Diseases, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
3. Purdue University Center for Cancer Research, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
4. Present address: Merck Sharp and Dohme, West Point, PA, USA.
5. Present address: Department of Pediatrics, Weill Cornell Medical College, New York, NY, USA.
6. Present address: Department of Pathology, Sanofi Genzyme, 5 Mountain Road, Framingham, MA, USA.
7. Present address: Department of Biology, Ivy Tech Community College, Lafayette, IN, USA.