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