ISSN:
1432-0878
Keywords:
Nerve regeneration
;
Toad
;
Nerve fibers
;
Smooth endoplasmic reticulum
;
Amphibians
;
Electron microscopy
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00307015
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