Antibody
Which of the following (s) is/are function (s) of Fc fragment of IgG?

All of these
It determines catabolic rate
It binds complement
It is related to passage of IgG across the placental barrier

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Antibody
The secretary component of sIgA is

added to dimeric IgA by the M cell
made by T cells
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

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