Differentiation of liquor contacting neurons in the regenerating spinal cord of the newt Triturus.
This paper reports a detailed electron microscopic study of the ventricular cells in the growing spinal cord during the first two months of tail regeneration in Triturus vulgaris and T. cristatus. In the proliferating ependyma some cells undergo a neural differentiation in order to produce "Cerebro-Spinal-Fluid-Contacting-Neurons (CSFCNs). These round or pear-like cells store dense core vesicles, 80-100 nm in diameter, and show less electron-density than ependymal elements. The stereociliar apparatus is the last cytological differentiation of these elements and after two months of regeneration, synapse-like endings were occasionally found.
Alibardi
L
L
Dipartimento di Biologia, University of Padova, Italy.
D000818:Animals; D002454:Cell Differentiation; D008854:Microscopy, Electron; D009416:Nerve Regeneration; D012455:Salamandridae / Q000502:physiology*; D013116:Spinal Cord / Q000166:cytology / Q000502:physiology*