Merck Manual

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Ventricular septal defect, cow
ventricular-septal-defect-3c-mee-sized
Ventricular septal defect, cow

    Gross necropsy photograph of the heart from an Aberdeen Angus cross Holstein-Friesian fetus with a congenital ventricular septal defect due to prolonged gestation (300 days, 70.5 kg).

Courtesy of Dr. John Mee.