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MASAYUKI TANAKA
Department of Epizootiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060, JAPAN Division of Veterinary Microbiology, Kyoto Biken Laboratories, Uji, Kyoto 611, JAPAN
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TAKASHI MATSUBA
Department of Veterinary Microbiology, School of Veterinary Medicine, Rakunou Gakuen University, Ebetsu, Hokkaido 069, JAPAN
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SADAO ONOE
Hokkaido Prefectural Shintoku Animal Husbandry Experimental Station, Shintoku, Hokkaido 081, JAPAN
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HIROMI YONEMICHI
Hokkaido Prefectural Shintoku Animal Husbandry Experimental Station, Shintoku, Hokkaido 081, JAPAN
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TATSUJI OKABE
Division of Veterinary Microbiology, Kyoto Biken Laboratories, Uji, Kyoto 611, JAPAN
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NORIMASA SASAKI
Division of Veterinary Microbiology, Kyoto Biken Laboratories, Uji, Kyoto 611, JAPAN
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CHIHIRO SUGIMOTO
Department of Epizootiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060, JAPAN
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MISAO ONUMA
Department of Epizootiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060, JAPAN
