Summary
This study is concerned with the organization of smooth surfaced canaliculi in fibers of regenerating sciatic nerves in a toad. Immediately proximal to the lesion the axons appeared crowded with widened canaliculi and vesicles. The derivation of these components was established through the analysis of isolated canaliculi in PTA stained preparations. In nerve sections 0.5 mm above the lesion most canaliculi are confined to the subsurface axoplasm. The amount of this subsurface reticulum appeares considerably reduced in axons profiles located 1 mm proximal to the lesion. Above this zone only small bundles of subsurface and axial canaliculi are found to occur in the regenerating fibers. The observations sustain the opinion that the accumulation of canaliculi at the end of the interrupted fibers is due to transport of this component by axoplasmic flow.
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Supported by Research Grant from the “Universidad Austral de Chile”.
The authors wish to thank Mr. Scott Cameron for critically reading the manuscript, and to Dr. Esteban M. Rodríguez for helpfull comments.
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Rodríguez Echandía, E.L., Schoebitz, K. The smooth endoplasmic reticulum in regenerating nerve fibers of the anuran Caliptocephalella gayi . Z.Zellforsch 132, 257–262 (1972). https://doi.org/10.1007/BF00307015
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DOI: https://doi.org/10.1007/BF00307015