Sara E Hamilton1,2, Thomas S Griffith3,4,5. 1. Center for Immunology, University of Minnesota, Minneapolis, MN, USA. hamil062@umn.edu. 2. Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA. hamil062@umn.edu. 3. Center for Immunology, University of Minnesota, Minneapolis, MN, USA. tgriffit@umn.edu. 4. Department of Urology, University of Minnesota, Minneapolis, MN, USA. tgriffit@umn.edu. 5. Minneapolis VA Health Care System, Minneapolis, MN, USA. tgriffit@umn.edu.