Fig. 7From: Preparation of gamma poly-glutamic acid/hydroxyapatite/collagen composite as the 3D-printing scaffold for bone tissue engineeringGene expression for the differentiation of rBMSCs including Col I, Col II, Aggrecan, and BMP-2 after seeding on the scaffolds and membrane for 14 days. The genes of interest compared to those of the control-GAPDH (n = 3, * p < 0.05)Back to article page