Describe how the body responds to immunisation

Immunisation introduces a specific antigen into the body. This is recognised as foreign and stimulates B lymphocytes to produce plasma cells and memory cells. Plasma cells go on to secrete specific antibodies against the antigen. Memory cells allow a faster immune response if that same antigen ever enters the body again. The body has now become immune.

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Answered by Zainab H. Biology tutor

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