Following are the types of immunoglobulin and their functions. Which one of the following is incorrectly paired?

IgD : Viral pathogen

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IgG : Phagocytosis

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IgE : Allergic reaction

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IgM : Complement fixation

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Solution

The correct option is A IgD : Viral pathogen
There are five types of immunoglobulins which are involved in different cellular activities. IgD is present on the activated B-Cells after antigenic recognition and stimulation. The IgD is generally co-expressed on the B-cells with the IgM. IgG is involved in phagocytosis, IgE involved in the allergic reaction and IgM involved in complement fixation.
Thus, the correct answer is option A.

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