Motor Neuron (IMAGE) Allen Institute Caption This is an image of a motor neuron grown on spinal cord ventral astrocytes showing how the regionally matched astrocytes promote dendrite outgrowth. Credit Erik Ullian/UCSF 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.