Body system project- Immune system

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Across
  1. 2. fine branching blood vessel
  2. 4. an antibody that counteracts a toxin.
  3. 6. thin walled vessels
  4. 11. also called biologic therapy
  5. 13. small organ behind the breastbone
  6. 14. immunity not present at birth
  7. 15. type of white blood cell
  8. 16. type of white blood cell
  9. 18. a blood protein
Down
  1. 1. are antigen-presenting cells
  2. 3. large phagocytic cell
  3. 5. becomes less responsive to something
  4. 6. small glands that filter lymph
  5. 7. Immunity present at birth
  6. 8. your bodies system to fight disease
  7. 9. lymph nodes in area between lungs
  8. 10. body mistakes own cells as bad
  9. 12. also known as complement cascade
  10. 17. injecting virus to create antibodies
  11. 19. largest organ in the lymphatic system.