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Selective Labeling of Visual Corpus Callosum Connections with Aspartate in Cat and Rat?

Published online by Cambridge University Press:  02 June 2009

Andrea J. Elberger
Andrea J. Elberger
Affiliation:
Department of Anatomy and Neurobiology, University of Tennessee, Memphis
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Abstract

Tritiated neurotransmitter candidates were unilaterally injected in visual cortical regions with abundant corpus callosum connections. D-aspartate (Asp) or gamma-aminobutyric acid (GABA) was injected along the area 17/18 border in cat, and the area 17/18a and 17/18b borders in rat. Retrograde Asp label was found contralaterally in supragranular and infragranular laminae in areas 17, 18, 19, PMLS, and PLLS in cat, and in areas 29, 18b, 17, and 18a in rat. No contralateral GABA label was found in cat or rat. Thus, the cat and rat corpus callosum may use Asp or a related substance as a neurotransmitter.

Keywords

Corpus callosumAspartateNeurotransmitterVisual cortexGABA
Type
Short Communication
Information
Visual Neuroscience , Volume 2 , Issue 1 , January 1989 , pp. 81 - 85
Copyright
Copyright © Cambridge University Press 1989

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