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Yoshio OHKUBO
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Norimoto URAKAWA
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Toyoaki HAYAMA
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Yoshio SETO
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Takayoshi MIURA
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Yasuhiko KANO
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Shigekatsu MOTOYOSHI
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Shutaro YAMAMOTO
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Kiichi ISHIDA
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Hiroshi IIZUKA
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Mitsugi IIDA
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Author's Organization:Laboratory of Veterinary Rharmacology, Faculty of Agiculture, University of Tokyo. Laboratory of Veterinary Rharmacology, Faculty of Agiculture, University of Tokyo. Laboratory of Veterinary Rharmacology, Faculty of Agiculture, University of Tokyo. Animal Farm, Faculty of Agriculture, University of Tokyo. Animal Farm, Faculty of Agriculture, University of Tokyo. Animal Farm, Faculty of Agriculture, University of Tokyo. Animal Farm, Faculty of Agriculture, University of Tokyo. Laboratory of Veterinary Pathology, Faculty of Agriculture, University of Tokyo. Laboratory of Veterinary Pathology, Faculty of Agriculture, University of Tokyo. Institute of Applied Microbiology, University of Tokyo. Institute of Applied Microbiology, University of Tokyo.