Generation of a new tau knockout (tauΔex1) line using CRISPR/Cas9 genome editing in mice Manuscript Number: 17-1058R1 Author(s): Josefine Bertz, Fabien Delerue, Arne Ittner, Lars M. Ittner, Yazi D. Ke, Daniel C.S. Tan, Sherilyn Yao