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A biological false-positive reaction is least likely to occur with which syphilis assay?


A) RPR
B) MHA-TP
C) FTA-ABS
D) Both B and C.

E) C) and D)
F) B) and D)

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Match the stages of syphilis with the appropriate signs and symptoms. (Use each answer only once.) -Primary syphilis


A) Diagnosis only by serologic methods
B) Presence of gummas
C) Development of a chancre
D) Generalized illness followed by macular lesions in most patients
E) Very early in infection, even before the first lesions

F) A) and B)
G) C) and D)

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Syphilis develops in which percentage of the sexual partners of persons with syphilitic lesions?


A) 10% to 25%
B) 25% to 40%
C) 30% to 50%
D) 50% to 75%

E) A) and D)
F) B) and D)

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Direct examination of treponemes is most often done by ______________ microscopy.


A) unstained, high-power, *43 resolution
B) unstained, oil immersion resolution
C) phase contrast
D) darkfield

E) None of the above
F) C) and D)

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Tertiary syphilis is best evaluated by using


A) cerebrospinal fluid.
B) serum.
C) urine.
D) joint fluid.

E) B) and D)
F) A) and C)

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Treponemes may remain viable for ______________ in tissue specimens from diseased animals.


A) 1 day
B) 3 days
C) 5 days
D) up to 30 days

E) B) and C)
F) A) and D)

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