Which type of antibody is produced in the bod | vedclass

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(D) Rheumatoid arthritis is an autoimmune disease where the immune system mistakenly attacks the body's own tissues,specifically the synovium (lining

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$IgM$

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(D) Rheumatoid arthritis is an autoimmune disease where the immune system mistakenly attacks the body's own tissues,specifically the synovium (lining of the membranes that surround the joints).In this condition,the body produces autoantibodies known as Rheumatoid Factor $(RF)$.The most common type of antibody involved in the Rheumatoid Factor is the $IgM$ class,which reacts against the $Fc$ portion of $IgG$ antibodies.Therefore,$IgM$ is the primary antibody type associated with the pathogenesis of rheumatoid arthritis.

List-$I$ (Barrier)	List-$II$ (Example)
$A$. Physical barrier	$i$. Skin
$B$. Physiological barrier	$ii$. Interferons
$C$. Cellular barrier	$iii$. Mucus coating
$D$. Cytokine barrier	$iv$. Saliva in mouth

Which type of antibody is produced in the body against the body's own cells in rheumatoid arthritis?

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