Fig. 1.

Gene array analysis in mouse hearts. Wild-type (WT) mice were infused with 10% DMSO (vehicle control) or carvedilol (Carv, 19 mg/kg/day) for 7 days via micro-osmotic pumps. Microarray experiments were performed in mouse left ventricles. The heat map represents mRNA expression values in 2 conditions (DMSO vs Carv). The expression level was visualized via colors. The dendrogram shows the relationships among the expression levels of samples. Hierarchical clustering was performed on both the samples and the genes based on “differentially expressed mRNAs.” Red indicates high relative expression, and green indicates low relative expression.