Organoid Growth (IMAGE) Technical University of Munich (TUM) Caption Human organoids derived from duodenal tissue sections. Organoids consist of epithelial cells and can be grown from isolated intestinal crypts, which contain active stem cells. Within days, organoids grow from small circular structures into bigger, more complex structures resembling many aspects of intestinal physiology. Credit E. Rath / TUM Usage Restrictions Free use for reporting on TUM. 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.