结论
1. 应用病理形态学观察、电镜负染、PCR 检测等方法从病理学和病原学角度对临床上一起疑似绵羊痘感染疫情进行诊断，确诊为 SPPV 感染所致。
2. 利用原代胎羊肾细胞从感染病羊肺部痘疹组织中成功分离获得 1 株绵羊痘病毒，将其命名为 SPPV/LN/12/JZ 分离株。
3. P32 基因的核苷酸序列同源性及遗传进化分析结果表明，SPPV/LN/12/JZ 分离株与宁夏绵羊 SPPV 分离株（JN596274）同源性最高，且处于同一进化小分支。
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