Regulation of the isolated TIRE in H4IIE cells following C/EBPα overexpression. H4IIE cells, infected as in Fig. 8, were also transfected with 10 μg of BPl-TIRE-Luc or DM5-Luc and luciferase activity measured 20 h later. Results are presented as relative luciferase activity to the control (AD-βgal, serum free) and are average ± SEM of three experiments. ** p < 0.01 AD-βgal versus Ad-C/EBPα.