The team led by Professor Fan Zengjie fromSchool of Stomatology, Lanzhou Universityandtheteam led by Professor Sun Luyi fromDepartment of Chemical and Biomolecular Engineering, University of Connecticut, designed and successfully produceda three-layer gradient scaffold through physical cross-linking, photo cross-linking and chemical cross-linking. This study provides a series of strategies for the preparation of polymer based porous scaffolds, and offersa new type of natural biodegradable scaffo...