Anti Bodies
Cleavage of an IgG molecule by a specific protease can produce

two heavy chain-light chain dimers
two Fab fragments and one Fc fragment
an antigen-binding site and two constant regions
an inactive mixture of oligopeptides

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Anti Bodies
Each IgA antibody molecule consists of

two polypeptide chain and has one antigen binding site
two polypeptide chain and has two antigen binding site
three polypeptide chain and has two antigen binding site
four polypeptide chain and has two antigen binding site

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Anti Bodies
The main function of antibodies is to

kill all the foreign bodies
protect the circulatory system
chemically combine with the antigen which induces it, inactivate the antigen and protect the body from disease
generate antigens, thus conferring immunization

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Anti Bodies
The immunoglobulin fold is

found six times in the IgG molecule
found only in IgG molecules
a β-barrel composed of a three- and a four-stranded antiparallel β-sheet
both (a) and (b)

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