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Volumetric and densitometric study in the cerebral cortex and septum of a lizard (Lacerta galloti) using the timm method

Authors
Journal
Neuroscience Letters
0304-3940
Publisher
Elsevier
Publication Date
Volume
40
Issue
1
Identifiers
DOI: 10.1016/0304-3940(83)90084-8
Keywords
  • Cerebral Cortex
  • Densitometry
  • Histochemistry
  • Reptile
  • Timm Method
  • Volumetry
Disciplines
  • Chemistry

Abstract

Abstract The Timm sulfide-silver method for the histochemical detection of heavy metals has been applied to the study of cortical and septal regions in the telecephalon of the lizard Lacerta galloti. Reacting areas are located in the anterodorsal septum, in the inner plexiform layer of the medial cortex, and in the plexiform layers of the dorsomedial and dorsal cortices. A very specific kind of axonal ending is responsible for this reactivity. Volumetric and densitometric measures have been performed in each reacting area. Usefulness of both measures as indicators of the number of labeled axonal endings projecting on a zone is discussed. Resemblance between these axonal endings and hippocampal mossy fiber boutons in mammals is suggested.

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