IgM is the first immunoglobulin made by B cells in the immune response. Surface IgM is expressed on immature and mature B cells, while IgM heavy (μ) chain is expressed intracellularly in pre-B cells.
Immunogen Information
Gene ID
3507
Swissprot
P01871
Synonyms
Immunoglobulin heavy constant muIGHMImmunoglobulin M