This study lay a firm foundation not only for preparation of antiserum later and detection BBTV fast and effectively, but also for plant anti-virus gene engineer and anti-virus breeding.
这为以后制备特异性抗血清，开展BBTV的快速、有效的检测奠定了基础，同时也为植物抗病毒基因工程和抗病育种研究做好了一定的前期工作。
We can see its family tree - and its daddy was a virus that evolved in the artificial breeding ground of a vast factory farm in North Carolina.
我们能看到这个病毒的谱系，它的上代病毒是北卡罗莱纳州一个大型集约化动物农场的人工繁殖基地中演化出来的一个病毒。
Breeding chicken with selenium feedstuff can effectively improve the ability to resist bacteria and virus while reduce veterinary drug dosage and pesticide residues in eggs.
使用含硒饲料养鸡能有效提高鸡体对细菌、病毒的自身杀灭能力，减少兽药用量，降低鸡蛋药物与病害残留。
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