LPS-induced phosphorylation of AKT is inhibited by wortmannin and N-acettylcysteine in a concentration-dependent manner in human PBMCs. Human PBMCs were pre-treated with either (a) wortmanniun or (b) N-acetylcyteine for 30 minutes before stimulating with LPS for 15 minutes. For each data point, the % of phosphorylated AKT relative to total AKT present is plotted as the mean ± SEM from at least 3 independent experiments. Sigmoidal dose response curves were plotted using Prism4 software. As a negative control, cells were left untreated.