Human Brain Organoid (IMAGE) Cell Press Caption This is a human brain organoid showing complex internal organization, with immature proliferating cells (red) and a surrounding layer of maturing neurons (green). Credit Jessica Mariani Usage Restrictions Credit Required. 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.