Abstract: Disclosed are methods for enhancing an immune response associated with a disease or condition in a patient comprising administering a first composition comprising a non-specific xenotypic antibody and optionally further administering a second composition comprising a specific xenotypic antibody that specifically binds to an antigen associated with the disease or condition.

Abstract: Disclosed are methods for treating cancer comprising administering a xenotypic antibody and a chemotherapeutic drug to a patient suffering from cancer. Also disclosed is a method for inducing a host immune response in a patient against a multi-epitopic in vivo tumor antigen present in the host serum, which antigen does not elicit an effective host immune response, comprising administering to the patient a chemotherapeutic drug and a composition comprising a binding agent that specifically binds to a first epitope on the antigen and allowing the binding agent to form a binding agent/antigen pair, wherein an effective host immune response is elicited against a second epitope on the antigen.

Abstract: The invention is therapeutic methods and compositions that alter the immunogenicity of the host.