Organoid Layers, UC San Diego School of Medicine (image) University of California - San Diego Share Print E-Mail Caption Organoids are clusters of cultured cells self-organized into miniature replicas of organs. In this image, neural progenitor cells (NPCs) are green. As the brain organoids increase in size, multi-layer structures composed of NPCs develop with intermediate progenitors (not shown) and cortical layer neurons (red). Cell nuclei are depicted in blue. Credit Image courtesy of Cleber A. Trujillo, UC San Diego Usage Restrictions Use caption and photo credit as indicated. Share Print E-Mail 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.