Author's Organization:Department of Veterinary Infectious Diseases, School of Veterinary Medicine and Animal Sciences, Kitasato University Department of Veterinary Infectious Diseases, School of Veterinary Medicine and Animal Sciences, Kitasato University Department of Veterinary Infectious Diseases, School of Veterinary Medicine and Animal Sciences, Kitasato University
Published: February 15, 1991Received: April 17, 1990Available on J-STAGE: February 15, 2008Accepted: October 11, 1990
Advance online publication: -
Revised: -