病毒遗传物质从RNA转为DNA的过程称为 ()
A. 基因重组
B. 基因转导
C. 逆转录
D. 噬菌体转导
E. 以上均不是
缺陷病毒的产生是指 ()
A. 基因的缺陷
B. 刺突的缺陷
C. 包膜的缺陷
D. 衣壳的缺陷
E. 以上均不是
Which of the following virus don't cause viremia()
A. poliovirus
B. encephalitis B virus
C. influenza virus
D. Varicella-Zoster virus
E. none of the above
Which of the following is false about interferon? ()
A. act directly on virus
B. broad-spectrum antiviral activity
C. host species specific
D. non-specific anti-viral immunity
E. none of the above