 The murine immune system essentially "amplifies" a small mass of TAA antibodies into a much larger mass used to vaccinate humans.Because the antibody produced using the "anti-idiotypic" process closely resembles the original epitope of the antigen, these antibodies can be used to induce immune responses from cellular to antibody-antigen for a given antigen, "e. g.", TAA, when administered as a vaccine to a human.They are mainly used for high risk cancer patients.