Across
- 3. a signaling molecule used in immune responses
- 4. an organ that filters blood and helps with immune responses
- 6. the process by which cells engulf harmful particles
- 7. the non-specific branch of the immune system present at birth
- 8. a lymphocyte that produces antibodies
- 11. the primary site of blood cell production
- 12. a small structure that filters lymph and stores lymphocytes
Down
- 1. a type of white blood cell that engulfs pathogens
- 2. a foreign substance that triggers an immune response
- 5. the most abundant type of white blood cell in innate immunity
- 9. a protein produced by B cells that binds to antigens
- 10. a type of lymphocyte that helps in cell-mediated immunity