Local axon collaterals of lamina I projection neurons in the spinal cord of young rats

Abstract

Abstractlpsilateral spinal cord areas occupied by axon collaterals of different types of ALT projection neurons. Dorsal Collateral Type projection neurons (DCT‐I and II, upper right and left corners; respectively) send axon collaterals into the dorsal laminae of the same segment and these axons may extend into the overlying white matter. The collateral area of Lateral Collateral Type (LCT) neurons (purple cell, lower left) extends beyond the segment of the neuron, includes the lateral spinal nucleus, a part of the dorsolateral funiculus and may include the lateral part of laminae I‐V. Collaterals of Ventral Collateral Type (VCT) neurons (yellow cell, lower right) are occupying an area that could be best described as a transverse slice of the grey matter ventral to lamina IV, centered on the rostrocaudal position of the neuron soma. The Journal of Comparative Neurology, Volume 518, Number 14, pages 2645–2665.