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Tsuneo FUKATA
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Toshihiko MYOKAI
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Eiichiroh BABA
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Akira ARAKAWA
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Author's Organization:Department of Veterinary Medicine, College of Agriculture, University of Osaka Prefecture Department of Veterinary Medicine, College of Agriculture, University of Osaka Prefecture Department of Veterinary Medicine, College of Agriculture, University of Osaka Prefecture Department of Veterinary Medicine, College of Agriculture, University of Osaka Prefecture