Keywords Porcine reproductive and respiratory syndrome virus, molecular analysis, recombinant pseudorabies virus, recombinant baculovirus, in-vitro expression, apoptosis;

• 猪繁殖与呼吸综合征病毒;分子分析;重组伪狂犬病病毒;重组杆状病毒;体外表达;细胞凋亡;