Across
- 1. Type of immunity developed after exposure to a pathogen
- 4. Trap and destroy cancerous cells, work to remove pathogens
- 6. Another word for neck
- 12. A protective protein
- 13. Suffix that means swelling
- 15. One-way pipes with valves
- 16. Type of immunity that is passed on from one human to another
- 17. Organ that shrinks as you get older
- 18. Exposure to a weakened or modified pathogen
- 20. Another word for armpit
Down
- 2. Suffix that means enlargement
- 3. Macrophages in this organ engulf and remove pathogens
- 5. Type of immunity that is naturally occurring, leukocytes
- 7. Gown, gloves, mask
- 8. A foreign protein
- 9. Contain leukocytes and act as filters
- 10. Another word for chest
- 11. Fluid in the lymphatic system
- 14. Best way to prevent infection
- 19. Study of the immune system