Tooth 1 (IMAGE) Rice University Caption A hydrogel made at Rice University consists of custom peptide fibers with spaces - "missing teeth" - that can trap and deliver hydrophobic small-molecule drugs. Credit I-Che Li/Rice University 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.