The most abundant class of Immunoglobulin in body is

IgG

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IgA

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IgM

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IgD

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Solution

The correct option is A IgG
Based on the decreasing order of concentration in human body, immunoglobins can be sorted in the order
IgG > IgA > IgM > IgD > IgE
Hence, IgG is the most abundant class present in human body.

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