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Reutilization of trigeminal motoneurons during amphibian metamorphosis.

Authors
  • Alley, K E
  • Omerza, F F
Type
Published Article
Journal
Brain Research
Publisher
Elsevier
Publication Date
Nov 30, 1998
Volume
813
Issue
1
Pages
187–190
Identifiers
PMID: 9824695
Source
Medline
License
Unknown

Abstract

Indirect evidence suggests that trigeminal motoneurons (Vmns) in Rana pipiens innervate distinct myofiber populations in tadpoles and adult frogs. Redeployment occurs when the larval myofibers die and are replaced during metamorphosis. To directly test this hypothesis, DiI was injected into the larval muscle and Fast Blue into the replacement myofiber population. Over 95% of the Vmns contained both tracers, providing support for the innervation of sequential targets by the same motoneurons.

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