The main hiding site of HSV-1 is ()
A. labial skin
B. pharyngeal lymph node
C. spinal neural ganglia
D. trigeminal ganglion
E. none of above
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Gp120 of HIV is encoded by which gene of blowing ()
A. env
B. pol
C. gag
D. tat
E. rev
Which animal species is not a reservoir of rabies? ()
A. Field mice
B. Skunk
C. Vampire bat
D. chick
E. Fox
Mad Cow Disease has been highly publicized in Great Britain.This disease, which is similar to scrapie, is caused by ()
A. Prions
B. Viruses
C. Rickettsiae
D. An autoimmune reaction
E. A bacterium with a defective cell wall
Which one of condition is not suitable for influenza virus.()
A. +ssRNA
B. icosahedral symmetry
C. HA and NA on surface of envelope
D. with envelope
E. growing in embryonated egg
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