1. 1Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
2. 2Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
3. 3Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida.
4. 4Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
5. 5Takeda Development Center Americas, Inc., Lexington, Massachusetts.
6. 6The Wistar Institute, Philadelphia, Pennsylvania.
7. 7AstraZeneca, Gaithersburg, Maryland.