Fig. 2: hsa_circ_0001599 promotes the dentinogenesis of hDPSCs in vivo.

a Subcutaneous transplantation was performed in BALB/c nude mice at 5-week-old for 4 weeks in control group and experimental group. b The regeneration of dentinal-like tissues was assessed in each group using H&E staining. c Masson staining detection of collagen fiber regeneration in each group. d Immunohistochemical staining of DSPP in each group. b–d Scale bar, 50 μm.