IgD -->
immunoglobulin D
medical dictionary

<immunology> This immunoglobulin (184 kD) is present at a low level (3-400 mcg/ml) but is a major immunoglobulin on the surface of B lymphocytes where it may play a role in antigen recognition.

Its structure resembles that of immunoglobulin G but the heavy chains are of the delta type.

Abbreviation: IgD

(30 Mar 1998)