The Immune System

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Across
  1. 2. study of internal defense system of humans and other animals
  2. 3. most common white blood cell
  3. 5. enter body with air, food, and water
  4. 7. cells with long cytoplasmic extensions
  5. 8. cells also known as B lymphocytes
  6. 9. antibodies identical antibodies produced by cells cloned from a single cell
  7. 11. blocks effects of histamine
  8. 14. agents that affect cells that produce them
  9. 16. T cells secrete cytokines that activate B cells
  10. 18. perforate the plasma membrane of target cell
Down
  1. 1. labels antigen for destruction
  2. 3. killer cells that are active against tumor cells
  3. 4. bind to specific antigens
  4. 6. large phagocyte that develop from monocytes
  5. 10. important signaling molecules that perform regulatory functions
  6. 12. lymphocytes also known as T cells
  7. 13. agents that regulate the activity of nearby cells
  8. 15. necrosis factor stimulates immune cells to initiate an inflammatory response
  9. 17. two interferons that stimulate macrophages
  10. 18. cells produce specific antibodies