The Immune System Crossword
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Across
2. reaction to antigens that are not dangerous to most
people
8. retrovirus that infects helper t cells
11. body system that includes many external defenses
13. part of the immune system that enhances the
ability of antibodies, attack cell membranes
14. substance that produces immunity in the body
16. condition caused by human immunodeficiency
virus
17. WBC that acts as a first line of defense
19. raised body temp to stop disease
20. underdeveloped or weakened immune response
Down
1. makes antibodies that attach to specific antigens
3. made of cells that attack foreign substances
4. swelling & redness
5. uncontrolled cell growth
6. chicken wing sized organ, trains immune cells
7. white blood cell that engulfs & digests pathogens
9. the ability to resist or recover from disease
10. type of disease, body cells under attack
12. coordinates the immune response or attack
infected cells
15. specialized protein that tags pathogens for
destruction
18. an organism, a virus, or protein causing disease