High expression of the classical swine fever virus (CSFV) envelope protein E2 by a single amino acid mutation and its embedded in the pseudorabies virus (PRV) vector for immunization.

通过单个氨基酸突变实现经典猪瘟病毒（CSFV）包膜蛋白E2的高表达，并将其嵌入伪狂犬病病毒（PRV）载体中进行免疫接种