| Institution: | (1) Department of Biological Sciences, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan e-mail: mnonaka@biol.s.u-tokyo.ac.jp Tel.: +81-3-58417589 Fax: +81-3-58003397, JP;(2) Department of Biochemistry, Nagoya City University Medical School, Mizuho-ku, Nagoya 467-0086, Japan, JP;(3) Department of Microbiology and Immunology, University of Maryland at Baltimore, Baltimore, MD 21201, USA, US;(4) Basel Institute for Immunology, PO Box, CH-4005 Basel, Switzerland, CH |
