Acta Neuropathologica

, Volume 25, Issue 2, pp 127–137 | Cite as

An electron microscopic study of normal bovine spinal ganglia and nerves

  • R. M. McCracken
  • C. Dow
Original Investigations

Summary

The ultrastructure of bovine spinal ganglia and intercostal nerves is described. The capsule of the ganglion and the perineurium of the nerve were similar and consisted of an inner zone of four to six layers of perineural epithelial cells and an outer zone of collagen. The ganglionic neuron was entirely surrounded by a layer of satellite cells but in some neurons processes from the neuronal perikaryon penetrated the satellite cell sheath and terminated adjacent to the basement membrane of the satellite cell layer. Similar axonal projections were occasionally observed in nerve fibres at the nodes of Ranvier. Irrespective of size all neurons had a similar morphology. Bifurcation of the nerve fibre was occasionally seen in the ganglion. The nerve was composed of both myelinated and unmylinated fibres and nodes of Ranvier and Schmidt-Lantermann clefts were frequently encountered. Capillaries were surrounded by pericyte cells and in the interstitial tissues mast cells were frequently seen.

Key words

Bovine Spinal Ganglia Intercostal Nerve Normal Ultrastructure Nerve Fibres 

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Copyright information

© Springer-Verlag 1973

Authors and Affiliations

  • R. M. McCracken
    • 1
  • C. Dow
    • 1
  1. 1.Veterinary Research LaboratoriesBelfastNorthern Ireland

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