Anti Bodies
IgE provides

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

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Anti Bodies
Each IgA antibody molecule consists of

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
two polypeptide chain and has two antigen binding site

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