Mice (image) Johns Hopkins Medicine Share Print E-Mail Caption Marfan hearts fail when exposed to stress levels well-tolerated by normal mice. Johns Hopkins Medicine researchers were able to reverse this heart failure with drug therapies. Credit Johns Hopkins Medicine 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.