![]() Neurosci Lett 8: 17–20Ĭullheim S, Kellerth J-O (1976) Combined light and electron microscopic tracing of neurons including axons and synaptic terminals, after intracellular staining of horseradish peroxidase. J Physiol (Lond) 267: 215–235Ĭullheim S (1978) Relations between cell body size, axon diameter and axon conduction velocity of cat sciatic α-motoneurons stained with horseradish peroxidase. The intramedullary part of the axon seemed to be less affected by the injury than all other studied parts of the neuron proximal to the lesion.Ĭoggeshall RE, Ito H (1977) Sensory fibres in ventral roots L7 and S1 in the cat. In those neurons, however, which had regenerating axon segments conducting faster than 10 m/s, all parameters above the lesion, except for the conduction velocity of the axon, had attained normal values. In motoneurons which seemed to lack regenerating axons or had regenerating axon segments with a low conduction velocity there was a clear growth retardation of all studied parameters. The lesioned neurons were compared with normal sciatic motoneurons in 7–8 and 77–92 days old kittens. The cell body diameter, the summed diameter of the 1st order dendrites, the intramedullary axon diameter and the axon conduction velocity proximal to the lesion were determined in individual neurons and related to the conduction velocity of the regenerating segment of the axons. After 70–85 days sciatic motoneurons were injected intracellularly with horseradish peroxidase (HRP). In 1 week old kittens a 10 mm long segment of the sciatic nerve was removed distal to the hamstring branch point.
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