The infective site of Paragonimus westermani adult is()
A. small intestine of the final host
B. colon of the final host
C. liver of the final host
D. lung of the final host
E. brain of the final host
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Virus have characters which differ from Bacteria :()
A. sensitive to antibiotics
B. can grow in culture medium
C. pass through filter
D. have cell structure
E. Have two kinds of neucleic acid DNA and RNA
Which of following can cause the great variation of influenza virus and wide epidemic:()
A. gene reassortment
B. gene recombination
C. transduction
D. transformation
E. conjunction
which is not the steps of virus replication?()
A. attachment
B. penetration
C. uncoating
D. binary fission
E. release
which one is the most important maker of HBV infection?()
A. HBsAg
B. HBsAb
C. HBcAb
D. HBeAb
E. HbeAg
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