endoneurium

Loose connective tissue layer inside the perineurium, consisting of fibroblasts & histiocytes. The basal lamina surrounding the neurilemma is immersed in endoneurium. This layer is isolated from other regions of the body by the barrier of the perineurium.

Related

epineurium perineurium

References

Bailey's Textbook of Histology, 17th edition, Copenhaver WA et al (eds), Williams & Wilkins, Baltimore, 1978