1. Department of Microbiology; Kyorin University School of Medicine; Mitaka Tokyo 181 Japan
2. Division of Flowcytometry; Kyorin University School of Medicine; Mitaka Tokyo 181 Japan
3. Laboratory of Electronmicroscopy; Kyorin University School of Medicine; Mitaka Tokyo 181 Japan
4. Department of Anatomy; Kyorin University School of Medicine; Mitaka Tokyo 181 Japan