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Yuichi OCHI
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Manabu OGATA
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Tomotari MITSUOKA
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Choji KANEUCHI
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Hiroshi KAWAGUCHI
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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 Department of Veterinary Hygiene, Division of Veterinary Science, Faculty of Agriculture, University of Osaka Prrfecture
