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Immunoglobulin D (IgD) is an [[Antibody|antibody]] class which in the humoral, specific arm of Immunity. It's main function is as an antigen receptor on [[B Lymphocyte|B lymphocytes]]. Because of this, it has very low serum concentrations. IgD and [[IgM|IgM]] are the only 2 Immunoglobins that are co-expressed. | Immunoglobulin D (IgD) is an [[Antibody|antibody]] class which in the humoral, specific arm of Immunity. It's main function is as an [[antigen receptor|antigen receptor]] on [[B Lymphocyte|B lymphocytes]]. Because of this, it has very low serum concentrations. IgD and [[IgM|IgM]] are the only 2 Immunoglobins that are co-expressed. | ||
It is roughly 185 kDa in molecular weight and has 4 domains; 2 δ heavy chains and 2 light chains. | It is roughly 185 kDa in molecular weight and has 4 domains; 2 δ heavy chains and 2 light chains. | ||
Revision as of 01:16, 17 October 2013
Immunoglobulin D (IgD) is an antibody class which in the humoral, specific arm of Immunity. It's main function is as an antigen receptor on B lymphocytes. Because of this, it has very low serum concentrations. IgD and IgM are the only 2 Immunoglobins that are co-expressed.
It is roughly 185 kDa in molecular weight and has 4 domains; 2 δ heavy chains and 2 light chains.