https://www.sciencedaily.com/releases/2017/07/170728092333.htm

“In an animal model, this technique successfully repaired nerve damage over distances of up to 6 cm: the nerve fibres grew back together in a functional way within 9 months. At the same time, the framework of spider threads, which is a natural substance, was completely broken down by the body. Equally, spider silk does not provoke a rejection reaction.”