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