Immunoglobulin M

Immunoglobulin M or IgM is a basic antibody that is produced by B cells.

ME/CFS
One study found elevated blood serum concentrations of both IgA and IgM to lipopolysaccharides of gram-negative bacteria. Serum IgA levels correlated with illness severity as measured by the FibroFatigue scale.

Learn more

 * The Adaptive Immune Response: B-lymphocytes and Antibodies