BHS316 Exam Review 2

5. an antigen that causes an allergic reaction
7. co-receptors that are expressed by helper T cells that are designed to clip onto class II MHCs
9. the region on the antigen that B cell receptors bind to
11. allows for virgin T cells to visit certain locations throughout the body
12. b cell changing class of antibody it produces
14. t cell that downregulates the immune system
16. when many BCRs cluster together to bind to epitopes on a single antigen for B cell activation
18. mutation of BCR genes to increase affinity of BCR for cognate antigen
19. co-receptors that are expressed by Killer T Cells that are designed to clip on class I MHCs
20. a way of displaying antigens that come from outside cells
21. a way of displaying antigens that come from inside the cell

1. organs that include the bone marrow and thymus
2. a protein that is on the surface of a killer T cell that binds to a fas protein on the surface of its target cell
3. a process in the thymic medulla that tests for tolerance to self
4. activated T cells
6. organs that include lymph nodes, spleen, and mucosal-associated lymphoid tissue
8. a specific antigen that is recognized by the B cell receptor
10. the process of testing T cells for MHC restriction
13. the second signal that is required to activate naive T cells
15. the location of origin for B cells and T cells
17. function as the brains of the immune system by processing the information pertaining to the invasion and producing a plan of action for T cells