Synonyms : Circulating Factor, Thymic, Factor, Thymic Circulating, Nonathymulin, Thymic Serum Factor, Thymulin, Thymuline, Circulating Thymic Factor, Factor, Circulating Thymic, Factor, Serum Thymic, Factor, Thymic Serum, Serique, Facteur Thymique, Serum Factor, Thymic