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DNA quantification of encapsulated hPDCs within 6.5% (w/v) PEG hydrogels composed of two different types of cross-linkers (F or R) and functionalized with 150 µM or 0 µM RGD, when cultured in 4C chondrogenic medium. 6.5R0 = R cross-linker + 0 µM RGD; 6.5RR = R cross-linker + 150 µM RGD; 6.5F0 = F cross-linker + 0 µM RGD; 6.5FR = F cross-linker + 150 µM RGD. Results depicted as mean ± SD. (Two-way ANOVA; n = 3; *** p < 0.001; ** p < 0.01).
