Hypoplastic Left Heart Syndrome (1 of 2) (image) University of Pittsburgh Schools of the Health Sciences Share Print E-Mail Caption This is a heart of a CRISPR gene edited mice with HLHS (bottom) have a much smaller left ventricle (LV) compared to a normal mouse heart (top). Right ventricle (RV), Aorta (AO). http://www.upmc.com/media/PublishingImages/2017/High-res%20images/hlhs-nature-genetics.jpg Credit University of Pittsburgh/Nature Genetics Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.