Opsonisation is carried out by

IgM

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IgG

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IgA

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IgD and IgE

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Solution

The correct option is A IgG
Opsonization is the process by which the pathogen is marked for ingestion and eliminated by the phagocytes.
Opsonization involves the binding of an opsonin (antibody) to an epitope on a pathogen.
After opsonin binds to the membrane, phagocytes are attracted to the pathogen facilitating phagocytosis.
During this process, the pathogen is opsonized and bound with the antibody IgG.
So, the correct answer is 'IgG'.

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