College;
of;
Animal;
Science;
and;
Animal;
Medicine,;
Inner;
Mongolia;
Agricultural;
University,;
Huhhot;
010018,China;
Beijing;
Vocational;
College;
of;
Agriculture,;
Beijing;
102442,;
China;
基因克隆; 序列分析; 逆转录酶病毒; 绵羊; 肺癌; 斑点杂交; 内蒙古; 突变菌株;