Virulizin

Immunotherapy or biological therapy is the treatment of disease by activating or suppressing the immune system. Immunotherapies designed to elicit or amplify an immune response are classified as activation immunotherapies, while immunotherapies that reduce or suppress are classified as suppression immunotherapies. In recent years,[when?] immunotherapy has become of great interest to researchers, clinicians and pharmaceutical companies, particularly in its promise to treat vari... [wikipedia]