The Lymphoid System Flashcards
1
Q
What are the APC?
A
Dendritic cells
Macrophages
2
Q
What happen after APC presents antigen with class II MHC protein at its surface?
A
Th bind to it and triggers macrophages to release interleukin 1 which activates the helper T cell which in turn release it’s own cytokines to stimulate the cell to proliferate and form clone of Th with the same receptor (specific to the initial antigen).
3
Q
What are the phases of a humoral response?
A
Activation phase and effector phase
4
Q
What are matching venues?
A
Aggregate of thousands of lymphocytes
Principle site of antigen presentation and T and B cell activation and expansion
Contains fine reticular fibres that allow circulation of lymphocytes and APC
Contain blood vessels
