Avian leukosis virus subgroup J (ALV-J) is a retrovirus which infects meat-type chickens.

亚群白血病病毒(ALV-J)是一种主要染肉用型鸡的反转录病毒。

Objective Preparation of specific transfer factor (TF) of avian influenza virus (AIV) and approach of immunopotentiation action to avian influenza vaccinum inactivatum.

摘要目的制备病毒特异性转移因子并探讨其对灭活疫苗的免疫增效作用。

Avian flu basically is to pass excrement and urine the pollution that waits to basket of dress, shoe, equipment, egg is pestiferous.

主要是通过粪便对服装、鞋、设备、蛋筐等的污染传播疾病。