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The activity of xC/EBPα promoter deletion constructs in transfected cells. Three different concentrations of the xC/EBPα promoter constructs, –1131/+41, –634/+41 and –321/+41, were transfected into Hep3B or A6 cells as indicated. The luciferase activity at each point was normalised to the β-galactosidase activity, and the values are expressed as relative luciferase activity (RLA). Each value represents the mean ± SD from three independent experiments.
