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The effects of PEG-RGDS concentration in micropatterns on HUVEC adhesion. (A) HUVECs attached on the surface of PEGDA hydrogels patterned with various concentrations of PEG-RGDS in 50-μm-wide stripes. (B) Quantification of cell adhesion by Coulter counter showed increasing number of attached cells with increasing concentration of PEG-RGDS on PEGDA hydrogels. Data represent mean ± SD (n = 5). *p < 0.05, analyzed by one-way ANOVA followed by Tukey's HSD test.
