Acellular nerve allografts can help preserve normal nerve structure and extracellular matrix composition. These allografts have low immunogenicity and are more readily available than autologous nerves for the repair of long-segment peripheral nerve defects. In this study. we repaired a 40-mm ulnar nerve defect in rhesus monkeys with tissue-engineered peripheral nerve. https://tonerparts.shop/product-category/toner-reload-kit/