Lung Tumors (IMAGE) University of Würzburg Caption A lung tumor that expresses USP28 (left). On the right, however, tumors are shown in which USP28 has been 'cut out' using the gene editing tool CRISPR/Cas9 -- they are significantly smaller. The size bar is located on the left edge of the picture. Credit (Images: Markus Diefenbacher) 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.