Each IgA antibody molecule consists of

Question

Options:

A . four polypeptide chain and has two antigen binding site

B . two polypeptide chain and has one antigen binding site

C . three polypeptide chain and has two antigen binding site

D . two polypeptide chain and has two antigen binding site

Answer: Option A
Answer: (a).four polypeptide chain and has two antigen binding site

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