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| Figure 2: Effects of PPE on PIP production in cultured NHDFs. Cells were treated with or without PPE at various concentrations. Culture supernatants were collected to measure the levels of PIP by EIA. Data are indicated as the mean ± SD of four independent experiments. *p<0.05 and **p<0.01 vs. control culture, ††p<0.01 vs. control culture at 24 and 48 h. |
