Thu September 03, 2009 By:

What is antibody and antigens

Expert Reply
Tue September 08, 2009

Antigen is any foreign substance that when introduced into the body stimulates an immune response in the body (especially the production of antibodies).


Antibody is any of a large variety of proteins produced by the body's immune system in response to a foreign substance i.e antigen.

Our bodies fight off an infection by producing antibodies. An antibody reacts specifically with the antigen that triggered its formation and its function is to inactivate the antigen.

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