Across
- 4. : Reduced ability of the immune system to respond effectively
- 8. : Engulfing and digesting pathogens by phagocytes
- 9. : Programmed cell death that removes infected or damaged cells
- 12. : Secretions such as stomach acid lysozyme and saliva
- 13. : Molecule that triggers a specific immune response
- 14. : Structural defence such as skin or mucous membranes
- 15. : Non specific defence mechanisms present from birth
- 16. : Identical laboratory made antibodies that target one antigen
- 17. : Medical treatment that enhances or suppresses immune function
- 20. : Y shaped protein made by B cells that binds to a specific antigen
- 21. : White blood cell that differentiates into plasma and memory cells
- 22. : Disease causing agent such as a virus bacterium fungus or parasite
- 23. : Differentiated B cell that secretes antibodies
- 24. : Non specific reaction with swelling redness and heat
- 25. : Community protection when most people are immune
- 26. : Protein on cell surfaces that distinguishes self from non self
- 27. : Signalling protein that coordinates immune cell communication
- 29. : Overreaction of the immune system to a harmless antigen
- 31. : Activation of specific lymphocytes after binding to antigen
Down
- 1. : Slower first response by naive lymphocytes
- 2. : Administration of a vaccine to stimulate immunity
- 3. : Rapid replication of the selected lymphocytes
- 5. : Specific acquired immune response that forms memory cells
- 6. : T cell that activates B and cytotoxic T cells by releasing cytokines
- 7. : Condition where the immune system attacks self antigens
- 10. : Faster stronger response due to memory cells
- 11. : Preparation containing antigen that induces artificial active immunity
- 18. : Cell that displays antigen fragments to activate T cells
- 19. : T cell that kills infected or abnormal cells
- 28. : White blood cell responsible for cell mediated immunity
- 30. : Long lived lymphocyte that provides a faster secondary response