Across
- 4. cell that engulfs large particles or whole cells
- 12. when our own immune system protects us from a pathogen
- 13. largest lymphatic organ
- 14. help fight infection
- 17. protection from a pathogen by immunity gained from someone else
- 19. when germs develop the ability to defeat the drugs designed to kill them
- 20. filter lymph for bacteria and tumor cells
- 22. when a cell engulfs large particles or whole cells
Down
- 1. occurs from contact with a disease causing agent
- 2. large white blood cell that engulfs pathogens and cellular debris
- 3. found in the blood and lymph tissue
- 5. invasion of the body by harmful parasites
- 6. organism that causes disease
- 7. defends the body against infecton
- 8. develops through deliberate exposure
- 9. specialized defense protein
- 10. large white blood cell that attacks pathogen-infected cells and cancer cells
- 11. responsible for cell-mediated immunity
- 15. responsible for antibody-mediated immunity
- 16. sometimes called immunizations
- 18. develops from stem cells in the bone marrow
- 21. fluid found in the lymphatic system