noun. A set of one or more antigenic determinants specific to the variable region of an immunoglobulin molecule.

noun. A set of immunoglobin molecules that have the same antigen-binding specificity in their variable regions.

noun. In the nomenclature of types in natural history, a specimen, not a holotype, identified by the nomenclator himself.

noun. An object or a substance typical of a class; one of a series exhibiting like peculiarities.

noun. A characteristic shared by a group of immunoglobulin or T cell receptor molecules, based on the antigen binding specificity of their variable region

"Favrille spent more than $140 million on the development of a portfolio of biotech assets and related patents including the FavId™ idiotype vaccine that was the Company's lead product candidate for the treatment of B-cell Non-Hodgkin's Lymphoma."