1. Departments of Internal Medicine I, Clinical Immunology and Infectious Diseases, and
2. Ophthalmology, Medical University of Innsbruck, Innsbruck, Austria;
3. Department of Laboratory Medicine, University of Washington, Seattle;
4. Department of Microbiology/Membrane Physiology, University of Tübingen, Tübingen, Germany;
5. Department of Host Defense, Osaka University, and Exploratory Research for Advanced Technology (ERATO), Japan, and Science and Technology Corporation, Osaka, Japan; and
6. Department of Microbiology, University of Washington, Seattle