Immunoglobulin D (IgD)

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