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Yuichi OCHI
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Takayasu TAKIZAWA
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Ryotaro ISHIZAKI
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Shinichiro KONISHI
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Author's Organization：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 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
