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What is Rh factor is and explain in detail?
A i.e. IgM antibody - Rheumatoid (Rh) factor in rheumatoid ahritis is an autoantibody of IgM class directed against Fc fragment of IgGQ. - Antibodies (immunoglobins) are glycoproteins. And Rh factors is an autoantibody of any immunoglobin class directed against Fc fragment of IgG immunoglobin (Davidson).