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
The secretary component of sIgA is

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

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Antibody
Which is not a function of IgG?

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

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