1. Section of Immunobiology, Yale University School of Medicine, New Haven, CT 06510
2. Department of Pathology, Yale University School of Medicine, New Haven, CT 06510
3. Centre d'Immunologie de Marseille-Luminy, INSERM-CNRS, University of Mediterranee, Campus de Luminy, 13288 Marseille Cedex 09, France
4. Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, Suita City, Osaka 565-0871, Japan
5. Akira Innate Immunity Project, Exploratory Research for Advanced Technology, Japan Science and Technology Corporation, Osaka 565-0871, Japan
6. Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT 06510