1. Department of Comparative Medicine; Penn State University Hershey College of Medicine; Hershey PA 17033 USA
2. Department of Pathology; Penn State University Hershey College of Medicine; Hershey PA 17033 USA
3. Jake Gittlen Cancer Research Foundation; Penn State University Hershey College of Medicine; Hershey PA 17033 USA
4. Department of Microbiology and Immunology; Penn State University Hershey College of Medicine; Hershey PA 17033 USA