IMMUNOLOGY

Detailed explanation-1: -What are antibodies made of? Antibodies are proteins. Each antibody has four polypeptides (peptides that consist of two or more amino acids), including two heavy chains and two light chains.

Detailed explanation-2: -Antibodies are proteins made by B cells (part of the body’s immune system) with each B cell producing unique antibodies that recognize a specific epitope on the antigen. An antigen is any substance that provokes an immune response – something foreign or toxic to the body.