Piece of Spinal Cord in 3-D Culture (IMAGE) Technische Universität Dresden Caption The confocal cross-section of a three-dimensional cyst shows the floor plate (green), which was formed after the addition of retinoic acid. Furthermore, the development of motor neurons (white) as well as interneurons (red) was shown. The Dresden researchers could demonstrate in vitro the typical pattern of an embryonic spinal cord. Credit ©CRTD/Andrea Meinhardt Usage Restrictions None 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.