Retinal Vasculature (IMAGE) University College London Caption This is a three dimensional reconstruction of blood vessels from retina stained for the vascular marker (collagen IV pseudocolored magenta) and retinal astrocytes (glial fibrillary acidic protein pseudocolored yellow). Credit UCL 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.