Affiliation: | 1. Edward A. Doisy Department of Biochemistry and Molecular Biology, St. Louis University School of Medicine, 1100 S. Grand Blvd., St. Louis, MO 63104, USA;2. Departments of Medicine and Developmental Biology, Washington University, 660 S. Euclid Ave., St. Louis, MO 63110, USA;3. National Cancer Institute, NIH, Bethesda, MD 20892, USA |