The CPV structural protein P32 was specific to CPV and has a major antigenic determinant, sequence of P32 gene is also conserved to CPV genome.

• 结构蛋白P32是CPV的特异蛋白,包含病毒粒子的主要抗原决定簇,并且P32基因具有很高的保守性,对CPV具有诊断意义。