Figure 1.

D-panthenol stimulated the growth of cultured human dermal papilla cells (hDPCs). (A) The growth of hDPCs was assessed by CCK-8 assay after 24 h treatment of D-panthenol. (B) Ki67, a cell proliferation marker was immunostained after 24 h treatment of D-panthenol and the proportions of Ki67 positive cells were calculated (×200 magnification). Ki67 positive cells were marked by green fluorescence and total cells were marked by DAPI. * p < 0.05, ** p < 0.01 versus control group. Data are expressed as mean ± SD.