Antibody Structure Diagram - Immune System Protein Visualization #3894593 (License: Personal Use)

This schematic depicts a classic IgG-type antibody with a green Fc (constant) region forming the stem and two green/blue Fab (antigen-binding fragment) arms. The orange spheres at the tips represent antigen-binding sites that recognize and bind specific pathogens. The blue segments indicate variable domains critical for immune specificity.

Used in educational materials, medical websites, and scientific presentations to explain adaptive immunity, vaccine mechanisms, or monoclonal antibody therapies. Matches user intent for learning basic immunology or visualizing molecular recognition.