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Title of the item:

Muscle fibers in regenerating crayfish motor nerves.

Title :
Muscle fibers in regenerating crayfish motor nerves.
Authors :
Pearce J; Life Sciences Division, University of Toronto at Scarborough, Scarborough, Ontario M1C 1A4, Canada.
Krause KM
Govind CK
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Source :
Journal of neurophysiology [J Neurophysiol] 1997 Dec; Vol. 78 (6), pp. 3498-501.
Publication Type :
Journal Article; Research Support, Non-U.S. Gov't
Language :
Imprint Name(s) :
Publication: Bethesda Md : American Physiological Society
Original Publication: Washington [etc.]
MeSH Terms :
Animals ; Ganglia, Invertebrate/physiology ; Hemocytes/physiology ; Motor Neurons/physiology ; Muscle Fibers, Skeletal/physiology ; Nerve Regeneration/physiology
Entry Date(s) :
Date Created: 19980207 Date Completed: 19980205 Latest Revision: 20171213
Update Code :
Academic Journal
Single discrete muscle fibers were found in regenerating motor nerves in adult crayfish. The regenerating nerves were from native or transplanted ganglia in the third abdominal segments and consisted of several motor axons. The proximal end of these motor axons showed numerous sprouts. Muscle fibers in these regenerating nerves appeared newly developed and were innervated by excitatory nerve terminals. A likely source of these novel muscle fibers may be blood cells in the nerve or satellite cells from neighboring muscle. Contacts made by axon sprouts with other axon sprouts, glia, and muscle fiber, in the form of a dense bar with clustered clear vesicles, characterized the regenerating nerve. These contacts may provide a possible signaling pathway for axon regeneration and myogenesis.

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