Exam 8: Precipitation Reactions

A serological reaction is set up in which the antigen and antibody are both soluble and form an insoluble complex that is detected macroscopically.What type of assay was described?

Electrophoresis followed by diffusion of antibody from wells cut in the gel best describes which of the following?

Which of the following might adversely affect an electrophoresis reaction?

Radial immunodiffusion combined with electrophoresis best describes which of the following?

Where does lattice formation occur to the greatest extent?

The radial immunodiffusion test is a method involving:

A situation in which antibody is in excess as compared to antigen is called:

The Western blot test used to confirm HIV is an example of which of the following?

In an Ouchterlony immunodiffusion procedure,a continuous arc of precipitate is observed between two adjacent wells.This is a reaction of:

The strength of binding of one Fab on an immunoglobulin to one epitope on an antigen is referred to as:

A situation in which antigen is in excess as compared to antibody is called:

The force that keeps antigen and antibody together after the initial attraction and which is responsible for stability of the antigen-antibody complex is:

Which technique is best to determine if two fungal antigens are identical?

In radial immunodiffusion,the diameter of the precipitin ring correlates with the:

When antibody combines with a particulate antigen,this is classified as which type of reaction?

The initial force of attraction between an antigen and an antibody is called:

The zone at which antibody and antigen are at optimal concentrations so that they form a large insoluble lattice together is called the:

Measurement of light scattered at an angle used to quantitate antigen-antibody complexes best describes:

In the Mancini endpoint method of RID:

In which of the following zones is a false-negative reaction likely?