Fig. 7From: Effect of an low-energy Nd: YAG laser on periodontal ligament stem cell homing through the SDF-1/CXCR4 signaling pathwayThe ELISA test of hPDLCs. The RT-PCR test of hPDLCs. ns represents P > 0.05,*represents P < 0.05, ** represents P < 0.01,*** represents P < 0.001, # represents P < 0.0001Back to article page