The 3-D Printer Used in This Study (IMAGE) Ecole Polytechnique Fédérale de Lausanne Caption This is the 3-D printer used in this study. Credit A.Osterwalder/EPFL Usage Restrictions For media and non-commercial purposes only. Please mention credit. 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.