1. The Committee on Immunology, University of Chicago, Chicago, IL 60637
2. Ben May Institute for Cancer Research, University of Chicago, Chicago, IL 60637
3. University of California San Francisco Diabetes Center, University of California San Francisco, San Francisco, CA 94143
4. Department of Pathology, University of Chicago, Chicago, IL 60637
5. Department of Neurology, University of Chicago, Chicago, IL 60637
6. Department of Immunology and Microbiology, Northwestern University, Chicago, IL 60611