Organoid Tray (IMAGE) Walter and Eliza Hall Institute Caption A researcher holding a tray containing lab-grown organoids, which are the size of a grain of sand. Credit: WEHI Credit WEHI Usage Restrictions Free to share, must credit. License Original 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.