Multi-subunit proteins which function in IMMUNITY. They are produced by B LYMPHOCYTES from the IMMUNOGLOBULIN GENES. They are comprised of two heavy (IMMUNOGLOBULIN HEAVY CHAINS) and two light chains (IMMUNOGLOBULIN LIGHT CHAINS) with additional ancillary polypeptide chains depending on their isoforms. The variety of isoforms include monomeric or polymeric forms, and transmembrane forms (B-CELL ANTIGEN RECEPTORS) or secreted forms (ANTIBODIES). They are divided by the amino acid sequence of their heavy chains into five classes (IMMUNOGLOBULIN A; IMMUNOGLOBULIN D; IMMUNOGLOBULIN E; IMMUNOGLOBULIN G; IMMUNOGLOBULIN M) and various subclasses.

Descriptor ID	D007136
MeSH Number(s)	D12.776.124.486.485 D12.776.124.790.651 D12.776.377.715.548
Concept/Terms	Immunoglobulins Immunoglobulins Immunoglobulin Globulins, Immune Immune Globulins

Below are MeSH descriptors whose meaning is more general than "Immunoglobulins".

Below are MeSH descriptors whose meaning is related to "Immunoglobulins".

Below are MeSH descriptors whose meaning is more specific than "Immunoglobulins".