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Effects of dobutamine on PPARδ expression in neonatal rat cardiomyocytes. The neonatal rat cardiomyocytes were treated with dobutamine at various concentrations for 4 hours (a) or at 1 μmol/L during various time points (b). The treated cells were harvested to determine the protein levels by Western blotting analysis. All values are presented as mean ± SEM (n = 6 per group). *P < 0.05 and **P < 0.01 as compared with the vehicle-treated control group.
