Module 5 (4)

1. molecules on self tissues for which tolerance is inadequate.
2. property of behaving as an antigen
6. ends of the forks formed by light and heavy chains contain a wide range of variable antigen binding sites.
11. Bind free antigens
13. cell surface markers and molecules that occur in some members of the same species but not in others.
16. is a substance that provokes an immune response in specific lymphocytes.
17. involved in allergic responses and parasitic worm infections.
18. monomer circulates in blood, dimer in mucous and serous secretions.
20. Bind processed antigens together with the MHC molecules on the cells that present antigens to them.
21. five monomers, first class synthesized following Ag encounter.
23. antibodies fill the surface receptors on a virus or the active site on a microbial enzyme to prevent it from attaching. Antitoxins for example.

1. T cell dependent antigens are processed by those phagocytes. (APC)
3. small molecular group that is recognized by lymphocytes.
4. Monomer, produced by plasma cells (primary response) and memory cells (secondary), most prevalent.
5. Markers that display unique characteristics of self molecules and regulation of immune reactions. Required for T lymphocytes.
7. Antibody aggregation ; cross-linking cells or particles into large clumps.
8. secreted by APC to activate TH cells.
9. genetically different type of lymphocyte
10. process of coating microoorganisms or other particles with specific antibodies so they are more readily recognized by phagocytes.
12. antigen that evokes allergic reactions.
14. Monomer, serves as a receptor for antigen on B cells.
15. potent T cell stimulators; provoke an overwhelming response.
19. Regulatory receptors found on macrophages, dendritic cells and B cells,(MDB). Involved in presenting antigen T cells.
22. produced by TH to activate B and other T cells. (T helper cells)