Institution: | 1.ASPEX Division, Research Center, Asahi Glass Co., Ltd, Yokohama, Kanagawa 221-8755, Japan, 2.ASPEX Division, Asahi Glass Co., Ltd, Chiyoda-ku, Tokyo 100-8405, Japan and 3.Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Hakozaki, Fukuoka 812-858, Japan |