Immune System

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Across
  1. 2. – Fluid portion of blood that carries immune proteins
  2. 5. (Up):
  3. 6. – Elevated body temperature as a defense mechanism
  4. 7. – Protein produced by B cells to neutralize pathogens
  5. 8. – Fluid that circulates through the lymphatic system
  6. 10. – Foreign substance that triggers an immune response
  7. 12. – T cell that activates B cells and cytotoxic T cells
  8. 14. – Overreaction of the immune system to a harmless substance
  9. 15. – A cell that engulfs and digests pathogens
  10. 17. – Chemical released during allergic reactions
  11. 19. – Local response to injury or infection, causing redness and swelling
  12. 20. – Lymphocyte responsible for producing antibodies
Down
  1. 1. – Any microorganism that can cause disease
  2. 3. – Large phagocytic cell that engulfs debris and pathogens
  3. 4. – Type of lymphocyte involved in cell-mediated immunity
  4. 9. – Most abundant type of white blood cell
  5. 11. – Organ that filters blood and helps fight infection
  6. 13. – Type of B or T cell that remains after infection for faster future response
  7. 16. – A preparation that stimulates immunity to a specific disease
  8. 18. – First physical barrier against pathogens