Ad-bFGF-siRNA in U251 cells increases connexin 43 protein levels and no affect the level of p-connexin 43 at S368 site. A) Expression of connexin 43 and p-connexin 43 at S368 site U251 cells infected with Ad-bFGF-siRNA and untreated U251 cells. A representative western blot is shown. B) Relative density values of Cx43 compared to β-actin from western blot analysis are provided. C) Relative density values of p-Cx43 compared to Cx43 from western blot analysis are provided. (mean ± SD, n = 3) (*p < 0.05 vs. control).