Anti Bodies
IgE provides

secretions in the body
All of these
complement killings of the cells and phagocytosis
immunity against some parasites

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Anti Bodies
Each IgA antibody molecule consists of

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

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Anti Bodies
The immunoglobulin fold is

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

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