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(a) Osteogenic gene (OCN, BMP2, RUN2) expression of rBMSCs cultured on 3D printed PCL and 4-SC/PCL composite scaffolds for 7 days. (b) Angiogenic gene (VEGF, HIF-1α, BFGF) expression of HUVECs cultured on 3D printed PCL and 4-SC/PCL composite scaffolds for 7 days (* for 0.01 < p < 0.05, ** for 0.001 < p < 0.01, and *** for p < 0.001). (Reproduced with permission from Reference [114], Copyright 2021, John Wiley and Sons).
