BHS 316 Exam Review 2

4. _____ is when a T cell is activated through two separate signals.
7. When a cell is _____ it looks like a normal cell but is not able to perform.
8. MHC II molecules display _____ proteins that come from outside of the cell.
10. IL-12 is an example of a _____.
13. _____ are cytokines that direct cell traffic in lymph nodes.
16. An antigen on an antigen presenting cell will plug into a _____ _____ _____ on a helper T cell.
17. Also known as "self eating"
18. A cell can die by apoptosis and _____.

1. _____ is a protein that functions in drilling holes in the cell membrane.
2. Cells that express CD4 and CD8 proteins are _____ positive cells.
3. The _____ ligand assists with cell death by apoptosis.
5. The _____ _____ ensures that class II MHC molecules do not pick up endogenous proteins.
6. After helper T cells and killer T cells have been activated they are classified as _____ cells.
9. CD4 and CD8 are examples of _____ molecules.
11. MHC I molecules display _____ protein fragments that are manufactured inside the cell.
12. The central region of the thymus is called the _____.
14. All secondary lymphoid organs contain _____ follicles.
15. _____ selection is a process that tests for MHC restriction on T cells.