用抗体检测转移至滤膜上病毒蛋白的方法是（）
A.免疫转印技术
B.免疫荧光抗体技术
C.对流免疫电泳
D.酶联免疫吸附试验
参考答案：A
The reason why he was removed was ______he was careless and dishonest.
A,when Bbecause C,that D,what
以RNA作模板，催化合成cDNA第一条链的酶是
A．反转录酶B．端粒酶C．末端转移酶D．甲基转移酶E．连接酶
