4D bioprinter (IMAGE) University of Barcelona Caption This state-of-the-art 4D bioprinter -the first one in Spain- includes the combination of strategies of conventional bioprinting such as extrusion with innovative methods. Credit UNIVERSITY OF BARCELONA Usage Restrictions Credit must be given to the creator. License CC BY 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.