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Precipitation reactions involve combination of soluble antibody with:


A) soluble antigen
B) cellular antigens
C) red blood cells
D) radioactive antigen

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

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An example of a qualitative precipitation procedure is:


A) Ouchterlony
B) radial immunodiffusion
C) rapid plasma reagin
D) complement fixation

E) All of the above
F) B) and C)

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Affinity between individual antigen and antibody molecules depends on several types of bonds,such as ionic bonds,hydrophobic bonds,hydrogen bonds,and van der Waals forces.How is the strength of these attractions characterized?


A) specificity
B) avidity
C) reactivity
D) multivalency

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

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An Ouchterlony immunodiffusion assay is set up and a line of precipitation is seen forming between the antigen and antibody wells.The lines of precipitation formed by two adjacent antigen wells cross each other,forming an X.The reaction described is called:


A) identity
B) non-identity
C) partial identity

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

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Which of the following would be considered a single diffusion reaction?


A) RID
B) immunoelectrophoresis
C) Ouchterlony diffusion
D) immunofixation electrophoresis

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

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Your supervisor wants you to design a quantitative precipitation assay for a new diagnostic test.Which of the following methods would you adopt?


A) Ouchterlony immunodiffusion
B) serum protein electrophoresis
C) radial immunodiffusion
D) enzyme immunoassay

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

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