Basic Immunology

6. Cells that have not yet encountered their specific antigens.
8. It is an automatic response to cell injury that eliminates harmful agents & removes dead tissues.
10. Proteins produced by pathogens but not processed by antigen presenting cells.
14. Proteins produce by the immune system in response to the presence of a foreign substance.
16. The actual part of an antigen that interacts with the immune cell to stimulate the immune response and antibody production.
18. What is LFA-1?
19. Antibody crosses the placenta.
20. Response is mostly IgG.

1. Secreted early in the immune response.
2. A molecule is to induce the movement of leukocytes up a concentration gradient and toward the chemokine source.
3. Binding of peptide by MHC molecule and displaying the complex on the cell surface.
4. A specific type of antigen that is able to induce adaptive immune response if injected on its own.
5. A molecule is expressed IgM and IgD on its surface.
7. Is where phagocytic cells surround and ingest foreign materials.
9. The region at which arms of the antibody (ab) molecule forms a Y.
11. Mediated by antibodies, which are produced by cells called B lymphocytes.
12. Cells involved in killing of antibody-coated parasites.
13. Antiviral Defense
15. Proteins are sequentially activated in a cascade.
17. Term given when 2 cytokines combine and give greater effects.