Salk Institute Organoids-Glioblastoma (IMAGE) Salk Institute Caption Organoids reveal how a deadly brain cancer grows. From left to right, tumor cells labeled with red fluorescent marker tdTomato spread in a cerebral organoid over a time period of 2, 3, 4, 6, 8, 10 and 13 weeks after transduction. Credit Salk Institute Usage Restrictions with credit and related coverage. 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.