Situation 18.1 In an Immunodiffusion Test to Diagnose Histoplasmosis, Patient's Serum Is

question 17

Multiple Choice

Situation 18.1
In an immunodiffusion test to diagnose histoplasmosis, patient's serum is placed in a well in an agar plate. In apositive test, a precipitate forms as the serum diffuses from the well and meets material diffusing from a second well
-The immunodiffusion test described in Situation 18.1 is

• A) An ELISA test.
• B) A direct test.
• C) A complement- fixation test.
• D) A precipitation reaction.
• E) An agglutination reaction.

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