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Cumulative PLL-FITC release from (A) 10K OPF hydrogels and (B) 35K OPF hydrogels loaded with PLL at 500 ng/hydrogel, 5 µg/hydrogel, or 20 µg/hydrogel over 28 days is shown. Visualization of uniformly distributed PLL-FITC loaded into hydrogel constructs at each concentration, which is shown at days 7 and 28 after incorporation for (C) 10K hydrogels and (D) 35K hydrogels. Scale bar = 200 µm.
