Author's Organization:Department of Veterinary Microbiology, Iwate University Department of Veterinary Microbiology, Iwate University Department of Virology, The Kitasato Institute
Published: June 15, 1989Received: April 30, 1988Available on J-STAGE: February 13, 2008Accepted: February 17, 1989
Advance online publication: -
Revised: -