Polysaccharide hydrogels with tunable stiffness and provasculogenic properties via α-helix to β-sheet switch in secondary structure A Forget, J Christensen, S Lüdeke, E Kohler, S Tobias, M Matloubi, ... Proceedings of the National Academy of Sciences 110 (32), 12887-12892, 2013 | 102 | 2013 |