Galactose-deficient (agalactosyl) IgG is significantly increased in the serum of patients with rheumatoid arthritis, and autoantibodies against it are used in clinical tests. Subsequent studies also show increased agalactosyl IgG in many chronic inflammatory diseases. In this study, we generated antibody 42B1 recognizing agalactosyl IgG and developed a new method to evaluate chronic inflammatory diseases with it.
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