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India-origin Rhesus macaque (Macaca mulatta), cross section of heart. Double-outlet right ventricle characterized by both the aorta (A) and pulmonary artery originating entirely from the right ventricle with a large (10 mm in diameter) subaortic ventricular septal defect (metal bar), subpulmonary stenosis (*), marked hypertrophy of the right ventricular wall (RV), and a severely dilated pulmonary artery (PA). LV = left ventricle.
