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Gene expression of hMSCs in various peptide-hybrid bio-inks by real-time PCR at 7 days. mRNA expression levels of von Willebrand factor (vWF), smooth muscle actin (α-aSMA), RUNX2 and ALP were significantly higher in the SP and BMP-7D group than in the control, SDKP, or OPN groups. *p < 0.05; **p < 0.01
