Immune Sytem

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Across
  1. 3. bacteria that cause disease
  2. 5. cells developed in the thymus
  3. 7. B cells develop here
  4. 8. stem cell for all immune system cells
  5. 9. type of immunity with immediate response
  6. 11. immune system's antigen identification process
  7. 12. system of protection & recovery
  8. 14. cells that fight against infection
  9. 15. body's cells attack its own healthy cells
  10. 18. substances that make the immune system create antibodies
Down
  1. 1. blood cells that clot bleeding
  2. 2. cells that remember the same antigen
  3. 4. cells that have no immunological memory
  4. 6. first line of defense for external factors
  5. 10. organ that filters lymph
  6. 13. largest kind of white blood cell
  7. 16. organ that stores and filters blood
  8. 17. type of immunity with slow response