Section 1&2

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Across
  1. 3. The virus that causes AIDS.
  2. 4. Process by which cells in the body react with each pathogen.
  3. 7. A protein that destroys pathogens.
  4. 11. A disease that is caused by a living thing within the body.
  5. 12. A lymphocyte that identifies the pathogen.
  6. 13. Bacterial pathogens that damage cells indirectly.
Down
  1. 1. The process in which white blood cells destroy pathogens.
  2. 2. Molecules that the immune system recognizes either as part of your body or not.
  3. 5. Organisms that cause disease.
  4. 6. White blood cell that distinguishes each kind of pathogen.
  5. 8. Produce proteins that help destroy pathogens.
  6. 9. A disease caused by a virus that attacks the immune system.
  7. 10. A white blood cell that engulfs pathogens and destroys them.