Fig. 4From: Polydopamine (PDA) coatings with endothelial vascular growth factor (VEGF) immobilization inhibiting neointimal formation post zinc (zn) wire implantation in rat aortasThe phenotype maintenance of HUVECs on different Zn surfaces. (a) NO levels of HUVECs cultured on different Zn surfaces for 7 days. (b) Quantification of fluorescence intensity of NO probes. (c) The eNOS staining of HUVECs cultured on different Zn surfaces for 7 days. (d) Quantification of fluorescence intensity of eNOS staining. (e) The VWF staining of HUVECs cultured on different Zn surfaces for 7 days. (d) Quantification of fluorescence intensity of VWF staining. * indicates p < 0.05, compared between two groups. ** indicates p < 0.01, compared between two groupsBack to article page