Click on image to view larger version.

Figure 2 Concentrations of endothelial progenitor cells in old and young subjects. Neither the concentration of (A) KDR/CD133+ or (B) KDR/CD34+ cells was significantly different between old (n = 20, open columns) and young subjects (n = 20, solid columns). Columns represent mean values, error bars are the standard error; p < 0.05.