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K. OKUDA
Mukden Institute for Infectious Diseases of Animals, S M.R. Co.
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T. TOYOSHIMA
Mukden Institute for Infectious Diseases of Animals, S M.R. Co.
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I. MOCHIDA
Mukden Institute for Infectious Diseases of Animals, S M.R. Co.
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Y. SATO
Mukden Institute for Infectious Diseases of Animals, S M.R. Co.
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S. IJICHI
Mukden Institute for Infectious Diseases of Animals, S M.R. Co.