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Representative left ventricular (LV) echocardiograms taken from the long-axis, parasternal approach in a young wild-type (WT) mouse, a young extracellular matrix metalloproteinase (MMP) inducer expression (EMMPRINexp) mouse, an old WT mouse, and an old EMMPRINexp mouse. Significant LV dilation was evident in the old EMMPRINexp group, and the summary findings are presented in Fig. 2. Scale bars = 2 mm.
