The Immune System

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Across
  1. 2. protiens the immune system uses to detect threats
  2. 5. animals that infest other organisms to survive
  3. 6. contact with these can make you sick
  4. 9. when a pathogen gets through the skin
  5. 11. foreign RNA that hijacks a cell to reproduce
  6. 12. a cell that causes clotting to stop bleeding
Down
  1. 1. part of the immune system that travels through the blood stream as cells
  2. 3. any virus or organism that causes disease
  3. 4. single-celled organisms sometimes responsible for disease
  4. 7. drugs that combat sickness
  5. 8. a kingdom of often multi-celled organisms that sometimes cause disease
  6. 10. an immune response where the body temperature increases to kill off an infection