The document summarizes the activities and research of the Experimental Neuropathology Unit at the San Raffaele Hospital in Italy. It describes that the unit conducts: 1) Biopsies of sensory and motor nerves as well as skin biopsies as part of its clinical activities. 2) Research on biomaterials for nervous system regeneration, peripheral neuropathies, and experimental disease models as part of its research activities. 3) Studies on animal models of amyotrophic lateral sclerosis to better understand the role of the peripheral nervous system in the disease's progression.