Labeling of Anti-MUC-1 Binding Single Chain Fv Fragments to Surface Modified Upconversion Nanoparticles for an Initial in Vivo Molecular Imaging Proof of Principle Approach oleh Markus Haase, Jens Waldeck, Christoph Bremer, Karen Köhler, Diana Dimova-Landen, Werner Hoheisel, Stephan Barth, Helga Hummel, Theo Thepen, Michael Huhn, Claudia Walter, Volker Weiler, Anja Hischemöller