Bioprinter (IMAGE) Penn State Caption This is a multiarmed bioprinter used to 3-D print cartilage. A special nozzle for printing bioink composed of strands of cartilage can be seen. Credit Ozbolat, Penn State Usage Restrictions Non commercial use only 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.