1. Department of Cellular Biology, Genetics, Histology and Pharmacology, Faculty of Health Sciences, University of Valladolid, Campus of Soria, 42004 Soria, Spain
2. Neurobiology Research Group, Faculty of Medicine, University of Valladolid, 47005 Valladolid, Spain
3. Institute of Biomedicine (IBIOMED), Universidad de León, 24071 León, Spain
4. Department of Physiology, University of the Basque Country, 48940 Leioa, Spain