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Proliferation and apoptosis of cells cocultured with different scaffolds. A) MC3T3-E1 cells and B) HUVECs proliferation after 0 h, 24 h, 48 h, 72 h determined by CCK-8 assays, n = 5; *p < 0.05 compared with the PP group; #p < 0.05 compared with the PPD group. C) Cell apoptosis detected after 48 h. D) Statistical analysis of apoptosis rates. n = 3, *p < 0.05.
