1. Mouse Biology Unit, European Molecular Biology Laboratory (EMBL), Via Ramarini 32, 00015 Monterotondo, Italy.
2. Pasteur Institute, Foundation Cenci Bolognetti, and Department of Human Physiology and Pharmacology, Center of Excellence BEMM, University of Rome, La Sapienza, Piazzale Aldo Moro 5, 00185 Roma, Italy.
3. Department of Anatomy, Pharmacology, and Forensic Medicine, University of Turin, Italy.
4. National Institute of Neuroscience, 10126 Turin, Italy.