Scaffold (IMAGE) University of Wisconsin-Madison Caption This electron microscope image of the new "scaffolding" for growing and implanting retinal cells shows the ice-cube-tray-shaped reservoirs that hold cells and cylinder-shaped holes in the bottom layer, which provide channels for maturing photoreceptors to make contact with a patient's retinal tissue. Credit Ma Lab 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.