Antibody

1. Antibody is a protein produced by the body's immune system in response to a foreign substance (antigen). BL-B-5 Click to know more Notes: An antibody reacts specifically with the antigen that induced its formation and inactivates the antigen. The human bodies fight off an infection by producing antibodies. Click to know more about expert level training (Source: Business Continuity Management Institute - BCM Institute)

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2. A protein produced by the body’s immune system in response to a foreign substance (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.

3. An antibody is a protein produced by an organism's immune system to recognize foreign substances. (Source: Centers for Disease Control and Prevention)