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Histamine increases blood flow and vascular permeability. This would account for all of the following changes that occur during inflammation, except
chemotaxis of phagocytes.
All of the following are true of the secondary response of humoral immunity, except that it
weakens quickly because memory B cells only survive for a year or two.
________ are clusters of lymphoid nodules deep to the epithelial lining of the small intestine.
Which of these statements about lymph flow in a node is false?
the afferent lymphatics enters at the hilum
T cells and B cells can be activated only by
exposure to a specific antigen at a specific site in a plasma membrane.
Class II MHC molecules are found only on which of the following?
lymphocytes and antigen-presenting cells
Immunoglobulins, formed of five subunits, that are the first antibodies to be produced in response to infection, are
The lymphoid system does all of the following, except that it
transports gases to and away from lymph nodes.
The classic pathway of complement activation begins when the protein C1 binds to
an antibody attached to an antigen.
In order for a lymphocyte to respond to an antigen, the antigen must
bind to specific receptors on the lymphocyte surface.
Helper T cells do all of the following, except
provide a rapid response to a future exposure to the antigen.
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