IgM rheumatoid factors in patients with rheumatoid arthritis derive from a diverse array of germline immunoglobulin genes and display little evidence of somatic variation
{{output}}
Rheumatoid factors (RF) are present in the plasma of patients with rheumatoid arthritis (RA) although the site of synthesis of most of these antibodies is within the synovium. This report primary concerns RF of the IgM isotype. While a few of the RF derive fro... ...
