3-D Printed Nerve Regeneration Pathway (image) University of Minnesota Share Print E-Mail Caption This is a 3-D printed nerve regeneration pathway implanted in a rat helped to improve walking in 10 to 12 weeks after implantation. Credit University of Minnesota College of Science and Engineering Usage Restrictions Credit is given to the university. Share Print E-Mail 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.