Affiliation: | 1Graduate School of Science and Technology, Kobe University Rokkodaicho, Nadaku, Kobe 657, Japan 2Department of Biology, Faculty of Science, Kobe University Rokkodaicho, Nadaku, Kobe 657, Japan 3Division of Genetics, International Center for Medical Research, Kobe University School of Medicine Kusunokicho, Chuoku, Kobe 650, Japan |