1) Surface anigens of an invading pathogen are taken in by a B cell
2) B cell processes them and presents them on its cell-surface
3) Helper T cells attach to these antigens activating the B cell
4) B cell divides rapidly by mitosis to give clones of plasma cells
5) Cloned plasma cells produce thousands of antibodies
6) Antibodies attach to antigens of the pathogen and destroys them
7) Some of the B cells produced from mitosis develop into memory cells to provide long-term immunity. They respond to the same antigen as before and they can divide to produce plasma cells if needed for a secondary immune response which is rapid
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