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A protein (immunoglobin) that recognizes and interacts with a specific site (epitope) on an antigen, usually foreign, such as a virus or bacteria, and either neutralizes or facilitates the clearance of the antigen from the body by the immune system. The variety of antibodies is limitless. Antibodies can be utilized as tools to specifically recognize a particular molecule. Recombinant antibodies are used for diagnostic and therapeutic purposes. |
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