another antigenic site contains at least two overlapping epitopes : polyclonal sera recognize predominantly an epitope or epitopes encompassed by the linear sequence 320mrnvpekqt328 , whereas the epitope defined by a particular monoclonal antibody comprises the seven amino acids 322nvpekqt328 , of which n322 , e325 , and q327 were implicated as contact residues .
C0003320
antigenic
C0003316
epitope