The immune system

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Across
  1. 3. another name for specific defenses or immunity
  2. 6. response to an antigen
  3. 7. located around the inner membrane of the lymph node
  4. 10. lies in the upper left abdominal cavity and filter RBC
  5. 11. excessive immune response that may release histamine
  6. 13. tissue response to a pathogen characterized by redness, swelling and pain
  7. 14. accumulation of fluid in the tissues
  8. 15. located in the center of the lymph node
  9. 17. soft bilobed organ behind the sternum
  10. 18. the number of lines of defense
  11. 19. disease causing agent
  12. 20. produces B cells
  13. 21. antigens that trigger allergic responses
Down
  1. 1. a non specific defense that fights infection which raises body temperature
  2. 2. preparation that produces another type of active immunity
  3. 4. hormonelike peptide
  4. 5. located in our pharynx
  5. 8. take fluid away from the lymph node
  6. 9. another name for nonspecific defenses or immunity
  7. 11. take fluid to the lymph node
  8. 12. another name for antibodies
  9. 16. rupturing membranes of foreign cells