Fig. 1

Decreased expression of OMD in pulpitis specimens and LPS-induced hDPSCs. a–c HE and immunofluorescence staining of healthy and inflamed pulpal tissues. d CCK8 assay results of hDPSCs after LPS treatment (0, 0.1, 1.0, and 10 μg/mL) for 1, 3, and 5 days. e mRNA expression of OMD in LPS-treated hDPSCs. f Protein level of OMD in LPS-treated hDPSCs. The results are expressed as mean ± SD (*P < 0.05, **P < 0.01, and ***P < 0.001)