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GAG/DNA content of selected PEG hydrogels after four weeks of in vitro chondrogenic stimulation in 4C chondrogenic medium. Hydrogel formulations were chosen based on previous proliferation data and design of experiments (DoE)-based software. Results depicted as mean ± SD (n = 3; Student’s t-Test ** p < 0.01, *** p < 0.001 when compared to 6.5RR composition).
