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| Figure 1: Effects of PPE on the proliferation of cultured NHDFs. Cells were treated with or without PPE at various concentrations. Cell proliferation was measured by an MTT assay. A Proliferation of NHD Fstreated with PPE at various concentrations. B.Timecourse of NHDF proliferation. Data are indicated as the mean ± SD of six independent experiments. *p<0.05 and **p<0.01 vs. control culture, ††p<0.01 vs. control culture at 24 and 48 h. |
