suggesting ILT iscapable of lowering down the red blood cell immune function of thebirds . which would give way to subclinical infection and the virus re-survival .

• 表明ILT弱毒疫苗株能使机体在接受ILTV后短时间内红细胞免疫功能降低，为疫苗弱毒株在体内毒力返强、隐性感染和继发感染创造了条件。