Antibody
Antigen binding sites of an immunoglobulin are located in

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

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Antibody
The secretary component of sIgA is

added to dimeric IgA by the M cell
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

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Antibody
Which is not a function of IgG?

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

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