Antigen-Antibody Binding Mechanism with Marker Molecules | Immunoassay Visualization #11368 (License: Personal Use)

This diagram depicts the core principle of immunoassays: specific binding between antigens (yellow) and antibodies (blue), with marker molecules (orange) attached to enable detection. The top row shows various antigen shapes with bound markers, while the bottom row displays corresponding antibody configurations, including Y-shaped structures with binding sites that recognize antigen epitopes. The illustration emphasizes molecular recognition and signal generation used in clinical diagnostics and research.

Used on educational or medical technology web pages explaining ELISA, rapid tests, or biosensor design; targets students, researchers, and clinicians seeking to understand immunoassay fundamentals.