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| Immunoglobulin M Gamma Globulin, 19S | IgM | IgM1 | IgM2 | 19S Gamma Globulin A class of immunoglobulin bearing mu chains (IMMUNOGLOBULINS, MU-CHAIN). IgM can fix complement. The name comes from its high molecular weight and originally being called a macroglobulin. | |
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