Which of the following markers is usually the first viral marker detected after hepatitis B infection?
A. HBeAg
B. HBsAg
C. HBcAg
D. Anti-HBc
E. HBeAb
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Which one of the following markers is closely associated with HBV infectivity and DNA polymerase activity?
A. HBeAg
B. HBsAg
C. HBcAg
D. Anti-HBc
E. HBeAb
Which of the following is found within the nuclei of infected hepatocytes and not usually in the peripheral circulation?
A. HBeAg
B. HBsAg
C. HBcAg
D. Anti-HBc
E. HBeAb
Hepatitis C (HCV) is usually a clinically mild disease, with only minimal elevation of liver enzymes. Hospitalization is unusual. Which one of the following statements best characterized HCV?
A. Few cases progress to chronic liver diseases
B. It often occurs in posttransfusion patients
C. HBV but not HVC infections occur in Ⅳdrug abusers
D. It is a DNA virus
E. Blood products are not tested for antibody to HCV
Hepatitis D virus (delta agent) is a defective virus that can replicate only in cells already infected with which of the following viruses?
A. Hepatitis A virus
B. Epstein-Barr virus
C. Hepatitis G virus
D. Hepatitis B virus
E. HIV