Livers (IMAGE) Johns Hopkins Medicine Caption On the left are two mouse livers that were treated with the control virus; notice they are engulfed in tumors. On the right are two mouse livers treated with the microRNA virus; they show no tumors or significantly reduced tumors. Credit Johns Hopkins Medicine Usage Restrictions None License Licensed content 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.