3D Printing System (IMAGE) Rutgers University Caption This 3D printing system would print gel scaffolds, or support structures, for growing human tissues. Like traditional printers that rely on four pigments to cover the entire color spectrum, the system would include hyaluronic acid and polyethylene glycol as the basic "ink cartridges" and other cartridges featuring inks with different cells and ligands that serve as binding sites for cells. Credit Madison Godesky 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.