E Comparison of the left ventricle function in WT and Cuedc2-/- mice by transthoracic echocardiography. *p = 0.0384, **p = 0.0389. n = 15 in young WT and Cuedc2-/- mice, n = 10 in old WT mice and n = 12 in old Cuedc2-/- mice. 