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*Yasuhiko UCHIYAMA
NIIGATA KAETU livestock Hygiene Service Center
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Toru TAKAHASHI
National Institute of Agrobiological Sciences
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Misa HOSOE
National Institute of Agrobiological Sciences
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Takeshi SETA
NIIGATA Agriculutural Research Institute Livestock Research Center
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Kuniaki NAKAGAWA
NIIGATA Agriculutural Research Institute Livestock Research Center
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Yuichi TAMURA
NIIGATA Agriculutural Research Institute Livestock Research Center