Fig. 4: Protein expression levels of proliferative and trans-differentiated cell markers.

The protein expression levels of CD71, CK14, integrin α6, and PCNA significantly increased in the DPSC group compared with those in the control and sham-operated groups. *P < 0.05, **P < 0.001, ***P < 0.0001, the DPSC group compared with the control group. #P < 0.05, ##P < 0.001, ###P < 0.0001, the DPSC group compared with the sham-operated group