Shaped Gel Sponges (IMAGE) Harvard University Caption Bioengineers at Harvard pushed pink squares, hearts, and stars through a syringe to demonstrate the versatility and robustness of their gel. Credit Image courtesy of Sidi Bencherif. 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.