Intestinal Cells (IMAGE) Cold Spring Harbor Laboratory Caption In contrast to intestinal cells in normal mice (top), cells in mice in which the RPA3 gene has been shut down by an shRNA fail to proliferate, causing the tissue to atrophy (bottom). Credit Scott Lowe@CSHL Usage Restrictions image may only be used with appropriate caption or credit. 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.