1 Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA. Electronic address: lambris@pennmedicine.upenn.edu.
2 Alector, Inc., South San Francisco, CA 94080, USA. Electronic address: ar@alector.com.
3 Biomedical Research Institute of Murcia (IMIB), Faculty of Medicine, University of Murcia, 30120 Murcia, Spain; Department of Biochemistry and Molecular Biology B and Immunology, Faculty of Medicine, University of Murcia, 30120 Murcia, Spain. Electronic address: pablo.pelegrin@imib.es.
4 Division of Medical Sciences, University of Victoria, Victoria, BC, Canada; Axe Neurosciences, Centre de Recherche du CHU de Québec, Université Laval, Québec City, QC, Canada; Neurology and Neurosurgery Department, McGill University, Montréal, QC, Canada; Department of Molecular Medicine, Université Laval, Québec City, QC, Canada; Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada; Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, Victoria, BC, Canada. Electronic address: evetremblay@uvic.ca.
5 Department of Neurological Surgery, Lou and Jean Malnati Brain Tumor Institute, Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA. Electronic address: peiwen.chen@northwestern.edu.