Chapter 17: Adaptive Immunity, Specific Defenses of the Host
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15 Terms
What is adaptive immunity?
The body’s ability to react specifically to a microbial infection.
What is the primary response?
The body’s response to the first contact with a particular antigen.
What is the secondary response?
The response by memory cells to subsequent contact with the same antigen.
What is humoral immunity?
Immunity that involves antibodies found in serum and lymph, produced by B cells.
Where do B cells develop?
In the red bone marrow
What is cellular immunity?
Immunity that involves T cells.
Where do T cells complete their development?
In the thymus.
How do T cell receptors recognize antigens?
They recognize antigens presented on MHC class I and MHC class II molecules on cell surfaces.
What types of antigens do humoral and cellular immunity respond to?
Humoral immunity: antigens in body fluids.
Cellular immunity: intracellular antigens.
Cytokines:
Chemical Messengers of Immune Cells Cells of the immune system communicate with each other by means of chemicals called cytokines.
Interleukins
Note 
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