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The effect of the CMV promoter/enhancer on c-myc IRES directed internal initiation. HeLa cells were transfected with the CMV promoter/enhancer based plasmids pCRF or pCRMF or the SV40 promoter/enhanced based plasmids, pRF and pRMF. (A) Renilla and (B) Firefly luciferase activity was determined and normalised to that of the transfection control, β-galactosidase.
