Figure 3. Effect of Enhancer Variants In Vivo.
The luciferase activity in mouse liver homogenates was measured 24 hr after plasmid injection. Enhancer activity is expressed as the ratio of firefly to Renilla luciferase activity normalized to the empty vector (pGL4.23) activity. An enhancer for ApoE was used as the positive control[21]. Data is expressed as the mean ± SEM for 4–11 mice. Differences between reference and variant enhancer elements were tested by an unpaired Student’s t-test (one variant) or an ANOVA followed by a Bonferroni’s multiple comparison t-test (for two or more variants); * P < 0.05, ** P < 0.001, *** P < 0.0001.