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Adaptive immunity:
Putting the work of B and
T cells together
The need for both innate and adaptive immunity:
1. T cells find their
target
(MHC/peptide)
2. Appropriate T
cells are trapped in
lymph tissue
3. Effector T cells
leave nodes
Which type of helper T cell will you become?
Stimulate
macrophages
Stimulate B cells
Antigen presentation affects T cell type:
How do effector T cells find their target sites?
Red = defense mechanism
Yellow = protective immunity
The immune response to mucosal invasion:
Oral Tolerance:
 T cells involved
Inflammatory response
not induced
Antigen not presented
by M cells
Immunological memory:
Quantitative and qualitative
changes