Chapter 14

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Across
  1. 1. reaction caused when the immune system is overly sensitive to a foreign substance
  2. 3. body's ability to destroy pathogens before that cause disease
  3. 5. immunization
  4. 8. chemical produced by body that is responsible for the symptoms of allergy
  5. 10. poison
  6. 12. white blood cell that engulfs pathogens and destroys them
  7. 13. abnormal masses of cells
  8. 14. lymphocyte that identifies pathogens and distinguishes one pathogen from another
  9. 16. any substance that causes an allergy
  10. 17. proteins produced by b cells
  11. 18. factors in the environment that cause cancer
  12. 19. acquired immunodeficiency syndrome
Down
  1. 2. white blood cells that distinguish between different kinds of pathogens
  2. 4. produce proteins that help destroy pathogens
  3. 6. organisms that cause disease
  4. 7. virus that causes AIDS
  5. 9. living things too small to see without a microscope
  6. 11. diseases that are not caused by pathogens
  7. 15. chemical that kills bacteria or slow their growth without harming body cells
  8. 16. molecules that the immune system recognizes either as part of your body or as coming from outside your body