Author's Organization:Morioka Livestock Hygiene Service Center Morioka Livestock Hygiene Service Center Department of Veterinary Pathology, School of Veterinary Medicine, Faculty of Agriculture, Iwate University
Published: February 15, 1991Received: February 06, 1990Available on J-STAGE: February 15, 2008Accepted: September 07, 1990
Advance online publication: -
Revised: -