Author's Organization:Hokkaido Branch Laboratory, National Institute of Animal Health Poultry Disease Laboratory, National Institute of Animal Health National Veterinary Assay Laboratory National Veterinary Assay Laboratory
Published: April 15, 1988Received: September 28, 1987Available on J-STAGE: February 13, 2008Accepted: November 20, 1987
Advance online publication: -
Revised: -