Anti Bodies
Alum is an effective adjuvant because it

is immunogenic for T cells
is immunogenic for stem cells
slows the release of antigen
disaggregates the antigen.

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Anti Bodies
Each IgA antibody molecule consists of

four 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
two polypeptide chain and has two antigen binding site

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