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Biological properties of PDNs. a) Confocal images of live/dead cells cultured within hydrogels on days 0 and 7. b) Cell viability over time. c) Normalized cell density over time. d) Confocal images showing the morphology of cells cultured within hydrogels on days 0 and 7. e) Circularity of cells cultured within different hydrogels on day 7. *** represents P < 0.001, **** represents P < 0.0001. Sample size, N = 4.
