Author's Organization:Department of Veterinary Microbiology, The University of Tokyo Department of Veterinary Microbiology, The University of Tokyo Department of Clinical Pathology, Showa University Department of Virology and Immunology, Medical Research Institute, Tokyo Medical and Dental University Department of Veterinary Microbiology, The University of Tokyo
Published: December 15, 1990Received: April 03, 1990Available on J-STAGE: February 14, 2008Accepted: July 30, 1990
Advance online publication: -
Revised: -