Across
- 1. substance that is able to kill or inhibit the growth of some microorganisms
- 3. large outbreak of a particular disease in a specific area
- 7. protein produced by B lymphocytes that specifically reacts with a foreign antigen
- 12. agent, such as a bacterium, virus, protozoan, or fungus, that causes infectious disease
- 14. white blood cell involved in specific immunity; a B cell or a T cell
- 15. severe hypersensitivity to a specific antigen, causing a massive histamine release
- 16. source of a pathogen in the environment
- 18. pathogen-caused disease passed from one organism to another organism
- 19. antibody-producing B lymphocyte
- 20. overactive immune response to environmental antigens
- 21. a disease found in only a few individuals within a population
- 22. for demonstrating that an organism causes a disease
Down
- 2. vaccination;develops an active immunity
- 4. lymphocyte that destroys pathogens and releases cytokines when activated
- 5. disease,such as type 1 diabetes, that results from an error in a biochemical pathway
- 6. long-lived lymphocyte produced during exposure to an antigen during the primary immune response; can function in future immune response to the same antigen
- 8. antiviral protein secreted by virus-infected cells
- 9. noninfectious disease, such as arthritis, that results from part of the body wearing out
- 10. postulates
- 11. protein in blood plasma that enhances phagocytosis
- 13. lymphocyte that activates antibody secretion in B cells and cytotoxic T cells
- 17. widespread epidemic