Identify the option which lists the immunoglobulins in the increasing order of molecular weight.

IgG > IgA > IgM > IgD =IgE

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IgM > IgA > IgE > IgG = IgD

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IgD > IgE > IgG > IgM > IgA

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IgE > IgM > IgA > IgG = IgD

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Solution

The correct option is B IgM > IgA > IgE > IgG = IgD
Approximate molecular weight of the immunoglobulins are as follows:

Type of immunoglobulins Molecular weight (kDa)

IgM 970

IgA 150- 600

IgE 190

IgG 150

IgD 150

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