Skip to main content
. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Biomaterials. 2014 Jul 11;35(30):8687–8693. doi: 10.1016/j.biomaterials.2014.06.027

Figure 1.

Figure 1

Gene expression (integrated photon flux) of HEK 293T cells transduced with luciferase-encoding lentivirus (1 × 107 particles) after 2 days of cell culture on porous PEG hydrogels containing 25 μg of (a) heparin or (b) chitosan. Polysaccharides were incorporated either by adsorption of unmodified polysaccharides after hydrogel formation, mixing of unmodified polysaccharides into the polymer solution before formation (mixed), or conjugating cysteine-modified polysaccharides using Michael-type addition before formation (conjugated). Control hydrogels do not contain polysaccharides. * indicates statistically significant difference to the other groups (p < 0.05).