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Figure 2 Mean transmyocardial beta-galactosidase expression in the left anterior descending coronary artery territory (open bars) and in the control, circumflex coronary artery area (solid bars) seven days after application of 5 x 10⁹ pfu Ad2-CMV-beta-galactosidase. IMD = surgical intramyocardial delivery (group A); PIMD = percutaneous intramyocardial delivery (group B); retroinfusion = pressure-regulated retroinfusion of the anterior cardiac vein (group C). Mean ± SEM, n = 5/group. *p < 0.05 group C vs. group A and group B.