NFASC and nerve compression syndrome: While our findings of immunofluorescent staining of cross-sectioned nerves showed that clemastine treatment has beneficial effect of increasing the ratio of P0-expressing axons/NF-expressing axons in compression neuropathy, we further investigated the ultrastructural features of the nerve such as myelin thickness and g-ratio (axonal diameter/axoglial diameter) to confirm the effect on myelination.