Immunology

5. the form of immunity involving antibodies
6. a single type of antibody that has been cloned
9. an antibody is made up of four of these
13. what arises when a large proportion of the population is vaccinated
15. area that is different for different antibodies
16. what type of cell does HIV attack
17. an example of the first defence against pathogens
18. form of immunity where antibodies are stimulated by the organism themselves
20. bond responsible for holding an antibody together
21. what is the outermost layer of an HIV molecule
23. enzyme used by HIV as part of replication
24. often a protein found on cell membranes that can stimulate an immune response

1. a protein produced by B-plasma cells
2. name of protein that cytotoxic T cells produce
3. cell responsible for the secondary immune response
4. a form of non-specific immunity
7. enzymes found within the lysosome
8. what hormone do monoclonal antibodies test for in pregnancy tests
10. process by which bacterial cells are clumped together
11. what HIV eventually leads to if untreated
12. form of genetic material found in HIV
14. form of immunity where antibodies are introduced from an outside source
19. response where lymphocytes respond to an organism's own cells that have been infected
22. name of the test for HIV