Many biological processes are determined by how various molecules in substances recognize and bind to each other. One such example is our immune defense, which is governed by molecules, called antibodies, that recognize and bind to foreign molecules, called antigens. In this way antibodies neutralize the alien molecules. The antibody recognizes the antigen because the antibody has a socket that perfectly matches the structure of the antigen. This recognition can be influenced artificially using molecular plastic molding technology... 
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