Endothelial cell activation. Mean (± SE) plasma levels of soluble E-selectin (A) and von Willebrand factor (B) after LPS administration (4 ng/kg intravenously, T = 0 hours), during one of the following conditions: an L_insuE_gluc clamp (□), an L_insuH_gluc clamp (○), an H_insuE_gluc clamp (■), and an H_insuH_gluc clamp (●). P = NS.