realized in role immune response Immunization in vivo host of immune response role 03/21/2010: This sense of 'host' is used not only in infectious diseases but also allergy, cancer, transplantation, etc. which is why it is needed separately from the 'host of infectious agent' meaning, which will be imported from IDO. host of immune response role IEDB IEDB is a role borne by an organism. It is realized by the organism during an immunization or an immune response taking place inside or on the surface of the organism, and in which the responding or stimulated immune system is part of the host. metadata incomplete