Figure 3. A) Macroscopic pictures of the resulting Gelatin NPs hydrogel
composite (Gel-PDA-PAR30) compared to pure Gelatin
hydrogel (Gel). B) Scanning Electron Microscopy images of the
Gel-PDA-PAR30 hydrogel. C) Swelling properties of the
Gel-PDA-PAR30 hydrogel compared to pure Gelatin hydrogel
at different time point in PBS at 37°C (n=3 error bars correspond to
standard deviations). D) Kinetic of PDA-PAR30-FITC NPs
(non-diluted) release from Gelatin hydrogel at 37°C in PBS for 15 days.
Fresh supernatant was added after each recording to perform cumulative
release over time (n=3 error bars correspond to standard deviations).