Mesangial cell expression of α8 integrin in wild type (wt) and α8 integrin-deficient mesangial cells (α8-/-). A: Real-time RT-PCR analysis of α8 integrin expression in wt and α8-/- mesangial cells. B: Western blot analysis of α8 integrin protein in wt and α8-/- mesangial cells. Amido black (Abl) staining of the blot served as loading control. Results are representative for at least 3 similar experiments. Data are means ± sd. * p < 0.05 vs. wt.