11 Biology Immune system

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Across
  1. 1. organ involved in innate immune system
  2. 4. antigen that should trigger an immune response
  3. 6. blood vessels increase in diameter
  4. 9. this increases as a result of vasodilation
  5. 11. signalling molecules released by damaged cells to cause vasodilation
  6. 15. white blood cell that directly targets cells for destruction based off a specific antigen(3)
  7. 16. substances that triggers an immune response
  8. 18. produced by B cells
  9. 20. cell types recruited to areas of inflammation
  10. 22. adaptive immune system has this
  11. 23. cell that is necessary to activate B cells (3)
  12. 25. one of the ways antibodies inactivate antigens, causes clumping
  13. 27. type of active transport that phagocytosis is
Down
  1. 1. type of antigen produced by your own cells
  2. 2. skin is this
  3. 3. body surface covered in a sticky substance that traps pathogens (2)
  4. 5. destroy overactive immune cells that are increasing inflammation inappropriately (3)
  5. 7. antibodies can bind antigens and acts as this to help target other immune cells
  6. 8. t and b cells are this type of leukocyte
  7. 10. immune system that is non-specific
  8. 12. type of phagocyte
  9. 13. type of response generated by B cells
  10. 14. immune system that is specific to one antigen
  11. 17. this also increases as a result of vasodilation (2)
  12. 19. second line of defence according to the QCAA
  13. 21. type of response generated by t cells (2)
  14. 24. accumulation of dead phagocytes, dead pathogens and cellular debris
  15. 26. each adaptive immune response is only for this many antigens