Author's Organization:Department of Veterinary Pathology, Faculty of Agriculture, Yamaguchi University Department of Veterinary Pathology, Faculty of Agriculture, Yamaguchi University The Cherno-Sero-Therapeutic Research Institute Poultry Disease Laboratory, National Institute of Animal Health
Published: June 15, 1992Received: September 10, 1991Available on J-STAGE: February 15, 2008Accepted: January 21, 1992
Advance online publication: -
Revised: -