Across
- 3. Redness, swelling, and heat in response to injury or infection
- 6. Immune cells that “remember” past infections
- 7. Fluid that circulates in the lymphatic system
- 10. Substance that triggers an immune response
- 12. Immune cell that attacks infected cells directly
- 13. A common symptom of infection that raises body temperature
- 14. Organ that filters blood and helps fight infection
Down
- 1. Microorganism that can cause disease
- 2. Protein that binds to antigens
- 4. White blood cell that engulfs and digests pathogens
- 5. Long-term resistance to a specific disease
- 8. General term for a cell that eats invaders
- 9. Modified pathogen used to stimulate immunity
- 11. Immune cell that produces antibodies
- 15. Blood component that contains antibodies