1. From Department of Pharmacology (K.A.T., X.Z., X.H., A.B.M., Y.Y.Z), Center for Lung and Vascular Biology (K.A.T., X.Z., X.H., A.B.M., Y.Y.Z), Department of Medicine (R.F.M.), and Department of Pathology (T.V.-N.), University of Illinois College of Medicine, Chicago; Department of Pharmacology, Rush University, Chicago, IL (D.P.); and Department of Hematology, West German Cancer Center, University Hospital Essen, Essen, Germany (J.R.G.).