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BMSCs cultured on 3D-printed PCL/LAP scaffolds promoted angiogenesis. Angiogenic cytokine (VEGFA, ANGPT-1 and FGF-2) expression of BMSCs cultured on 3D-printed PCL/LAP scaffolds at gene (a–c) and protein (d–f) level. (g, h) Tube formation assays of HUVECs treated with supernatants of BMSCs cultured on PCL/LAP scaffolds. (i–n) Angiogenesis-related gene expression of HUVECs treated with supernatants of BMSCs cultured on PCL/LAP scaffolds. *P < 0.05, **P < 0.01 and ***P < 0.001
