Anti Bodies
Each IgA antibody molecule consists of

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

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Anti Bodies
A polyclonal antibody response

violates clonal selection
is produced only in response to polymeric antigens
occurs during the lag phase of the immune response
is produced by several B cells recognizing different pitopes on the same antigen

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Anti Bodies
IgE provides

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

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