Affiliation: | 1. Department of Microbial Genetics, National Institute of Genetics, l, 111 Yata, 411, Mishima, Shizuoka-ken, Japan 2. Faculty of Science, Toho University, Miyama 2-2-1, 274, Funabashi, Chiba, Japan 3. School of Agriculture, Nagoya University, 464, Chikusa-ku, Nagoya, Japan
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