Each of the following statements concerning Treponema is correct EXCEPT: O a. Treponema pallidum produces an exotoxin that stimulates adenylate cyclase. O b. Treponema pallidum cannot be grown on conventional laboratory media. O c. Patients infected with T. pallidum produce antibodies that react with beef heart cardiolipin. O d. Treponemes are best diagnosed by fluorescent treponemal antibody-absorbed (FTA- ABS) test on a specimen of her serum. Question 40 Not yet answered PFlag question The following are possible outcomes of viral replication, which one is characteristic of Hepatitis B? O a. No apparent or morphologic change O b. Lysis of cells (viral lysis) O c. Malignant transformation O d. Fusion of cells
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Which of the following statements about hepatitis B virus is false? a) Replication involves reverse transcriptase. b) Infected persons may have large numbers of non-infectious viral particles circulating in their bloodstream. c) In the United States, infection rates have been steadily increasing over the last few years. d) Asymptomatic infections can last for years. e) Infection can result in cirthosis.
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