Antibody

: The two arms that bind to antigens.

: Found at the tips of the "Y" arms, this region determines the antibody's specificity . It contains the paratope , which binds to a specific part of an antigen called an epitope . antibody

: The tail of the "Y" that communicates with immune cells to trigger a response. 2. The Five Classes of Antibodies Antibody Structure | Request PDF - ResearchGate : The two arms that bind to antigens

: Forms the base and lower parts of the arms. It determines the antibody's class and how it interacts with other parts of the immune system. Fab and Fc Fragments : antibody

The canonical antibody structure (typically IgG) is composed of four polypeptide chains: