动物常用的疫苗主要有弱毒活疫苗、灭活疫苗、亚单位疫苗、病毒活载体疫苗和基因缺失疫苗等。近几十年来,随着基因重组技术的发展,人们研制出以植物病毒作为核心组分、能够刺激机体产生持久...展开更多 Vaccination is currently regarded as one of the most effective measures to prevent and control diseases.Commonly ...