title: Letter: Circulating interferon after transfer-factor therapy.
mesh_terms: D002648:Child; D006801:Humans; D007111:Immunity, Cellular; D007116:Immunization, Passive; D007369:Interferon Inducers / Q000032:analysis; D007372:Interferons / Q000097:blood*; D007962:Leukocytes / Q000276:immunology; D008297:Male; D013344:Subacute Sclerosing Panencephalitis / Q000097:blood / Q000276:immunology / Q000628:therapy*; D014762:Viral Interference
chemical_list: D007369:Interferon Inducers; D007372:Interferons