Disease

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  • Created by: Angelique
  • Created on: 19-12-12 09:52

Disease

T-cells and cellular immunity:

  • the activated T-cells change to killer T-cells, these bind to antigens on infecting pathogens and kill them by making pores in their cell membrane, allows water to diffuse through so the cell bursts.
  • called cellular immunity as the foreign cells are killed directly by the lymphocyte cells.

B-cells and humoral immunity:

  • the activated B-cells change into plasma cells.
  • plasma cells contain large amounts of rough endoplasmic reticulum and are protien factories. synthesising and secreting antibodies.
  • called humoral immunity because the foriegn cells are killed by soluble antibodies dissolved in the blood plasma.
  • secondary immune response: memory B-cells continue to secrete antibodies, the memory cells will quickly divide to form a new clone army.so fast that the pathogen is destroyed before it repoduces enough to cause disease.
  • primary immune response: slow and weak response to a first infection.
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