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.