Antibody
Antigen binding sites of an immunoglobulin are located in

light chain alone
Fc region of the antibody
heavy chain alone
Fab regions of the antibody

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Antibody
Which is not a function of IgG?

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

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Antibody
The secretary component of sIgA is

made by plasma cells that secrete dimeric IgA
formed by cleavage of an epithelial cell receptor used to transport the dimeric IgA across the epithelial cell
made by T cells
added to dimeric IgA by the M cell

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