Figure 5. (A) Gross image of a poly(ethylene glycol)-diacrylate (PEGDA) hydrogel.
(bar = 5 mm) (B) Safranin-O and H&E staining of chondrogenic-committed cells in PEGDA or PEG-RGD hydrogels after 3 weeks in vitro culture. (bar = 100 µm) (C) Real-time PCR analysis indicated distinct cellular response in RGD-modified hydrogels.