The Promoter-driven firefly control vectors are commonly co-transfected with experimental Renilla or NanoLuc luciferase vectors for use in the Dual-Luciferase or Dual-Glo Reporter Assay Systems. The control firefly vectors should give an almost invariant level of activity, while the experimental Renilla or NanoLuc vector varies with treatment. The pGL4.13[luc2/SV40] ,pGL4.53[luc2/PGK] and pGL4.54[luc2/TK] Vectors offer three different promoter options for your dual-reporter assay.