... H., Hata, N ., Asagiri, M., Ogasawara, K.,Nakao, K., Nakaya, T., Katsuki, M., Noguchi, S., Tanaka, N. &Taniguchi, T. (2000) Distinct and essential roles of transcriptionfactors IRF-3 and ... transfection.CAT and b-galactosidase activities were measured in extracts of transfected cells [24], and CAT activitywas expressed in arbitrary units after normalization tob-galactosidase activity ... tran-scriptional machinery and transcriptional activation [11].Besides virus infection, many stressing or in ammatorystimuli can coordinately activate members of the AP-1, IRF and Rel families...