Anti Bodies
The human IgG class of antibodies is divided into

five IgG classes
two IgG classes
three IgG classes
four IgG classes

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Anti Bodies
IgE provides

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

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Anti Bodies
Each IgA antibody molecule consists of

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

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