Immune System

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Across
  1. 1. Redness and swelling as part of immune response
  2. 4. Injection of weakened pathogen to build immunity
  3. 5. Type of B cell that releases large amounts of antibodies
  4. 8. A substance that triggers an immune response
  5. 11. Hair-like structures that sweep mucus and pathogens away
  6. 12. Overreaction of the immune system to a harmless substance
  7. 14. Enzyme in tears and saliva that breaks down bacteria
  8. 15. Chemical that increases blood flow and triggers inflammation
  9. 17. Sticky substance that traps pathogens at body openings
  10. 18. First white blood cell to respond to infection
  11. 22. Resistance to a specific pathogen after exposure
  12. 25. Additional dose of vaccine to maintain immunity
  13. 26. A disease-causing microbe
  14. 32. Type of immunity developed after exposure, specific
  15. 33. Protein that binds to and neutralises antigens
  16. 35. Lymphocyte that produces antibodies
  17. 36. Non-living particles that hijack host cells to reproduce
  18. 37. Organ that filters blood and recycles old red blood cells
  19. 38. Drug that inhibits the development of viruses
  20. 40. Process of engulfing and digesting microbes
  21. 41. White blood cell that engulfs and digests pathogens
  22. 42. Protein released by infected cells to warn nearby cells
  23. 43. White blood cell involved in specific immunity
Down
  1. 2. Releases histamine during allergic reactions
  2. 3. First line of defence against pathogens
  3. 6. Disease where immune system attacks body's own cells
  4. 7. Cell that helps the body respond faster to future infections
  5. 9. Lymphocyte that targets infected or abnormal cells
  6. 10. Organ where T cells mature
  7. 13. White blood cell active in parasitic infections and allergies
  8. 16. Eukaryotic microbes that include yeasts and moulds
  9. 19. Condition where immune system is underactive
  10. 20. Type of immunity present from birth, non-specific
  11. 21. Chemical signals released by immune cells
  12. 23. System of proteins that helps kill pathogens
  13. 24. Unicellular prokaryotes that reproduce rapidly
  14. 27. Large white blood cell that digests pathogens and dead cells
  15. 28. Organism that lives in or on a host, causing harm
  16. 29. Filters lymph and stores white blood cells
  17. 30. Rise in body temperature to slow pathogen growth
  18. 31. Drug used to treat bacterial infections
  19. 34. Site of white blood cell production
  20. 39. Virus that causes immunodeficiency by attacking T cells