Tumoroids (IMAGE) University of Pennsylvania School of Medicine Caption Tumorids: Villin-Lin28b/Let7-knockout enteroids in 3-D culture are shown. Credit Lab of Anil Rustgi, M.D., Perelman School of Medicine, University of Pennsylvania 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.