Brain-like cell ensembles in a dish. (IMAGE) Columbia University Caption At four weeks of growth, this Modular Neuronal Network (MoNNet) features interconnected spheroids, each one featuring several types of brain cells. Credit Tomer lab | Columbia's Dept. of Biological Sciences Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.