To identify native epitope of N protein, we constructed the ORF7 gene-targeted peptide library and screened by the MAb N3H2. After 3 rounds of biopanning, 3 clones were obtained.

• 为进一步研究表位结构；本研究构建了PRRSV ORF7基因特异性肽库；利用N3H2进行了3轮筛选；获得3个阳性噬菌体克隆.