Biology-Unit 4

3. the process by which a cell self-destructs by producing self-destructive enzymes
6. destroys pathogens by phagocytosis and releases cytokines
10. a world wide epidemic
11. causes vasodilation and increases permeability
13. the design of vaccines, include randomisation, double blinded, placebo-controlled protocols
15. a chemical which increases the antigenic response, enhancing the immume system
17. community responsibility
18. A state period or place of isolation
19. unusually high cases in a given area
20. has two types cytotoxic T cells and helper T cells

1. regular cases occurring in an area
2. chemical which attracts more phagocytes and natural killer cells
4. occurs occasionally in an area
5. a phagocyte first engulfs a pathogen, contains it in a vacuole and then lysosomes fuse with the vacuole releasing digestion enzymes which destroy it
7. destroys pathogens by apoptosis
8. makes histamine
9. individuals responsibility
12. the white blood cell involved in the specific immune response multiplies when presented with a foreign antigen which matches its receptor
14. the practice of using antiseptics to eliminate the microbes that cause disease
16. destroys by making antibodies which cause cell lysis and marks the pathogen for phagocytosis