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You have performed a titer of an antibody present in serum, which produces agglutination. The last test tube to show agglutination is tube 5, the 1/16 dilution. You would report out a titer of:

The precipitation reaction is a serologic method in which:

Which of the following is a characteristic of the humoral immune response?

Up to the point where C5 is produced in the complement pathway, the pathway can best be described as:

Once a naive T cell enters the interfollicular area of a lymph node, the T cell:

Which of the following refers to the bond strength between the epitope and the FAB regions of the corresponding antibody?

Which of the following is primarily responsible for the changes seen in the secondary immune response in comparison to the primary response?

One difference between the classical complement pathway and the other two pathways of complement activation is that activation of the classical complement pathway requires:

This statement best describes which of the following techniques?  Patient antigen and labeled antigen is mixed and allowed to react with antibodies bound to a solid phase. The amount of patient antigen present is inversely proportional to the amount of detected label (signal strength).

Which of the following statements is correct, concerning the difference between a heterogeneous and homogeneous enzyme immunoassay?