Antibody
Simulation of which of the following will lead to appearance of first antibody to appear following stimulation by an antigen?

IgG
IgE
IgA
IgM

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Antibody
Which is not a function of IgG?

Major antibody in serum
Activates or fixes complement
First antibody type produced against an antigen during the primary antibody response
Involved in opsonization

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