Fig. 8From: Reduced graphene oxide coated alginate scaffolds: potential for cardiac patch applicationMTT assay results of prepared scaffolds on HUVECs viability. * (p < 0.05), ** (p < 0.01), *** (p < 0.001) and **** (p < 0.0001) indicate significant difference compared with other groups. Data were presented as the average ± standard deviation (n = 3)Back to article page