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