1. Laboratory of Biopharmacy and Pharmaceutical Technology, Laboratory of Biochemistry, Laboratory of Proteins and Nanotechnologies in Separation Sciences, and Laboratory of Organic Chemistry, IFR 141, CNRS, University of Paris-Sud, F-92296 Châtenay-Malabry, France, and CEA/Saclay, Department of Radiolabeled Molecules, F-91191 Gif sur Yvette, France