Masses of right ventricle (A), left ventricle plus septum (B), and their mass ratio (C), and right ventricular wall thickness (D) and estimated V0 (E). Data are shown as means ± SE, *P < 0.05 and #P < 0.01 compared with the control group. LV, left ventricle; S, septum; RV, right ventricle; V0, unloaded volume.