Hydrogel (IMAGE) Rice University Caption A synthetic, injectable hydrogel developed at Rice University boosted the toxicity of a new class of cancer-fighting immunotherapy drugs. This scanning electron microscopy image shows the self-assembled nanofibers that make up the hydrogel. Credit Hartgerink Research Group/Rice University Usage Restrictions For news reporting purposes 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.