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Lucifer yellow-CH identification of a primary neuron connecting the first segmental nerve to the three giant axons in the nerve cord of the earthworm Amynthas hawayanus.

Authors
  • Assmé, Z
  • Chang, Y C
Type
Published Article
Journal
Brazilian Journal of Medical and Biological Research
Publisher
SciELO
Publication Date
Jan 01, 1988
Volume
21
Issue
2
Pages
389–390
Identifiers
PMID: 3203171
Source
Medline
License
Unknown

Abstract

This is the first step in the identification of a primary or first-order neuron connecting terminal organs, such as receptors or muscle, to interneurons, such as giant axons. The preparation employed here was a single segment of the ventral nerve cord between the 30th and the 40th segment, with a single first segmental nerve connected. A small drop of 7% Lucifer Yellow-CH was placed at the cut end of the first nerve in the absence of detergent or electric current. A structured complex could be seen in the cord anterior to the first nerve after one or two min backfilling. Several long processes extend from this structure to the contralateral side of the nerve cord and terminate in button-like structures near the medial giant axon and the contralateral lateral giant axon. The afferent or efferent function of this neural complex remains to be determined.

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