Supported by the Special Project of Department of Science and Technology of Hebei Province(08820412D);the Special Project of Qinhuangdao Municipal Bureau of Science and Technology[Qinkeji(2003)30-35];the Special Project of Shijiazhuang Municipal Bureau of Science and Technology(07150193A);the Scientific Research Innovation Team Project of Hebei Normal University of Science and Technology(TD201201)~~
[Objective] This study aimed to investigate the histopathological changes in chickens artificially infected with infectious laryngotracheitis(ILT). [Method] Through ar- tificial injection of allantoic liquid contain...