1. Division of Immunology and Pathogenesis, University of California, Berkeley, Berkeley, CA 94720
2. Laboratory of Bioorganic Chemistry, Graduate School of Information Science, Nagoya University, Chikusa, Nagoya 464-8601, Japan
3. Laboratory of Host Defense, World Premier International Research Center, Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan
4. Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
5. Howard Hughes Medical Institute, Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390
6. Department of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605