Immunoglobulin D (IgD)- Structure and Functions

Immunoglobulin D (IgD)- Structure and Functions

Immunoglobulin D (IgD) is a unique immunoglobulin with a low concentration in serum and the exact function of which is not known. IgD represents about 0.25% of the total serum immunoglobulins and has a relative molecular mass of 185 kDa while a half-life of 2.8 days, similar to that of IgE. However, it makes up about 1% of proteins in the plasma membranes of B-lymphocytes where it …

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