The anti-prion antibody 15B3 detects toxic amyloid-β oligomers Manuscript Number: 15-0882R2 Author(s): Claudia Balducci, Marten Beeg, Emiliano Biasini, Roberto Chiesa, Luisa Diomede, Gianluigi Forloni, Marco Gobbi, Pooja Joshi, Michele Mazzanti, Erika Pizzi, Alessandro Rossi, Mario Salmona, Matteo Stravalaci, Laura Tapella