Blood and the immune system

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Across
  1. 6. result of a vaccination
  2. 7. iron containing protein in a red blood cell
  3. 11. a cytokine which is involved in the immune response
  4. 14. a person who has antibodies against antigen D is rhesus - ...
  5. 15. a white blood cell
  6. 18. scientist who discovered the first antibiotic
  7. 20. Edward Jenner found out how to fight this disease
  8. 21. the first antibiotic
  9. 23. what do helper T cells do with B cells?
  10. 25. one of the organs of the lymphatic system
  11. 27. type of T cells
  12. 29. they are involved in the clotting process
  13. 31. fragments of a pathogen which are displayed
  14. 32. red blood cells carry this to the cells
Down
  1. 1. a mechanical barrier against pathogens
  2. 2. bacteria are not multicellular
  3. 3. ...immunity because most people are vaccinated
  4. 4. Behring used this animal when he discovered passive immunity
  5. 5. produced by plasma cells
  6. 8. they often cause pneumonia
  7. 9. type of T cells which shut down the immune response
  8. 10. feature of the inflammatory response
  9. 12. scientific term: red blood cell
  10. 13. a disease
  11. 16. one reason why viruses are not alive: they cannot ... on their own
  12. 17. in this response antibodies are used
  13. 19. type of T cells which controls the immune response
  14. 22. white blood cells
  15. 24. a blood system
  16. 26. liquid part of blood
  17. 28. ...cells which help to fight a disease after the second exposure
  18. 30. a pathogen