USMLE Step 1

/

Immunology

/

Immunoglobulins

Previous
Next

Immunoglobulin D (IgD)

3527
Watch Video

Summary

Immunoglobulin D (IgD) is an antibody with poorly understood functions. It is expressed on the surface of B-cells as a B-cell receptor for antigens.

Key Points

  • Immunoglobulin D (IgD
    • Unclear function
      • Co-expressed with lgM as a B-cell Receptor
      • Low levels circulate in serum