Chapter 15: Immune System

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Across
  1. 2. anything that causes the immune system to have an allergic reaction.
  2. 4. largest known pathogens.
  3. 6. nonliving pathogens.
  4. 7. a scientist who studies the causes and spread of diseases.
  5. 8. common pathogens that causes diseases such as strep throat.
  6. 12. a chemical that is made by microorganisms and is able to destroy other microorganisms.
Down
  1. 1. pathogens that cause diseases such as athlete’s foot.
  2. 3. occurs when a disease spreads to many people in a short period of time.
  3. 5. insects or other animals that carry pathogens.
  4. 9. a special protein produced by white blood cells that can destroy a specific pathogen.
  5. 10. anything that may cause a disease.
  6. 11. contains dead or weakened pathogens to provide immunity against disease.