Affiliation: | Departments of Infectious Diseases1. and Molecular Life Science,2. Tokai University School of Medicine, Isehara, Kanagawa 259-1193, Tokyo Research Center, Nisshinbo Industries, Inc., Nishiarai Sakaecho, Adachi-ku, Tokyo 123-8585,3. and Department of Tropical Medicine and Parasitology, School of Medicine, Keio University, Shinanomachi, Shinjuku-ku, Tokyo 160-8582,4. Japan |