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Proliferation of C2C12 cells cultured on GRGDS-modified 4KG5 DA, DM, and UDM hydrogels after 1, 4, and 7 d of incubation. Cells were stained with Hoechst dye. Data represent the mean of three experiments ± standard deviation of cell number/normalized section (5mm2). A statistical significance of p ≤ 0.005 was obtained for all the comparisons (except for the pair comparison with the symbol *). Statistical significance was calculated using the student's t-test for multiple comparisons.
