Immunology Exam 2

1. third protein that binds to the α and β chains of class II MHC molecules
4. MHC molecules having many forms
6. the most important type of cells during the initial stages of attack
9. region where T cells temporarily stay that surrounds the central arteriole
10. the cytokine receptor that T cells express to migrate to the thymic medulla
12. There is a second cell type which has been implicated in testing for tolerance of self antigens in the thymus
13. consequence if a T cell fails the MHC restriction test
14. proteins that replace defective proteins in the proteasome of macrophages

2. the transcription factor drives the expression of tissue-specific antigens in medullary thymic epithelial cells
3. cells found in lymphoid follicles and are critical for B cell activation
4. patches of smooth cells that are embeded among cells that line the small intestine
5. are blood vessels found in the lymph nodes that lymphocytes travel through
7. type of CD4+ T cell helps dampen the immune response
8. molecules that display protein fragments to T cells
11. molecule competes with CD28 for binding to B7 on APCs
12. organ responsible for T cell tolerance induction