CK5 Expression (IMAGE) Tokyo University of Agriculture and Technology Caption CK5 expression, a basal cell marker, in the 2.5D organoid cells (right) and parental 3D organoids (left). Credit Tatsuya Usui, Tokyo University of Agriculture and Technology Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only. 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.