A Population of Neurons Made of Human Embryonic Stem Cells (image) University of Cologne Share Print E-Mail Caption A population of neurons made of human embryonic stem cells after reducing CSDE1 levels . The neurons are stained in green, the nucleus is blue. Credit CECAD Cologne Usage Restrictions None 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.