Department of Pharmaceutical Sciences, College of Pharmacy, Nebraska Medical Center, Omaha, Nebraska 68198-6025, Department of Physics & Astronomy and Center for Materials Research & Analysis, University of NebraskaLincoln, Lincoln, Nebraska 68588-0111, and Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska 68198-4525 (2005-04-21時点)