S. Minoshima (mino@dmb.med.keio.ac.jp) S. Mitsuyama (mituyama@dmb.med.keio.ac.jp) N. Shimizu (shimizu@dmb.med.keio.ac.jp)
Department of Molecular Biology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160 Japan