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Norimasa SASAKI
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Masahisa NAKAI
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Ichizo IWAMOTO
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Shin-ichiro KONISHI
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Takeji IKEGAMI
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Author's Organization:Micro-Biological Laboratory, Bio-chemical Co., Ltd. Micro-Biological Laboratory, Bio-chemical Co., Ltd. Micro-Biological Laboratory, Bio-chemical Co., Ltd. Department of Bacteriology, Division of Veterinary Science, Faculty of Agriculture, University of Tokyo Department of Bacteriology, Division of Veterinary Science, Faculty of Agriculture, University of Tokyo