day-old SPF chickens were injected with AEV NH-937via intracerebral inoculation and killed1,3,5,10,14,20,25,30days postinjection,respectively.

• 用禽脑脊髓炎病毒NH937毒株接种1日龄SPF雏鸡。 分别在攻毒后5、10、15、20、25、30天取材大脑和小脑、固定、H.