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(a) Cell viability in different concentrations of extract solution of PU/PCL membranes. (b) SEM images of seeded cells proliferated on the surface of PU/PCL and C2-E8 after 7 days of incubation, (c) Proliferation of L929 fibroblast cells on the surface of PU/PCL membranes. (d) Proliferation of BAEC cells on the surface of PU/PCL membranes., #, a: Label of statistical significance (p < 0.05). Difference between samples with the same label is not statistically significant
