Neurons and Astrocytes Populate the 3D Tissue Model (image) Tufts University Share Print E-Mail Caption This is a confocal image of flourescent makers indicating presence of neurons (green), astrocytes (red) and the silk protein-collagen matrix (blue). Image field is 460 microns. Credit Tufts University 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.