Antigen Targeting

**Semantic type:** Phenomenon or Process

**Definition:** Antigen Targeting involves specific and high affinity non-covalent interaction (binding) of an antibody reagent through intermolecular physical forces of attraction and spatial complementarity with a soluble or particulate substance (antigen) that induces an immune response. Using the keen specificity of antigen recognition by antibodies, targeting selectively localizes antibody-associated reagents to antigen sites for therapeutic or diagnostic effect.