<unk>  <unk>  are antibodies that are secreted by different B cell lineages within the body (whereas monoclonal antibodies come from a single cell lineage). They are a collection of immunoglobulin molecules that react against a specific antigen, each identifying a different epitope.
Polyclonal antibodies
Antigen
Isoantibodies
Immunotoxin
Monoclonal antibody
Microantibody
Antibody
Neutralizing antibody