The NADPH oxidase Nox4 restricts the replicative lifespan of human endothelial cells - Lener, B; Koziel, R; Pircher, H; Hutter, E; Greussing, R; Herndler-Brandstetter, D; Hermann, M; Unterluggauer, H; Jansen-Durr, P (Biochem J, 2009)