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Methods for imaging labeled neurons together with neuropil features in Drosophila.

Authors
  • 1
Type
Published Article
Journal
Journal of Histochemistry & Cytochemistry
0022-1554
Publisher
SAGE Publications
Publication Date
Volume
48
Issue
11
Pages
1575–1582
Identifiers
PMID: 11036100
Source
Medline

Abstract

We describe staining protocols for serial semithin sections of Drosophila central ganglia that allow visualization of gene expression in particular neurons with counterstaining to display the ganglion architecture. Green fluorescent protein (GFP), expressed in a subset of sensory neurons from a selected enhancer trap line, is visualized by conventional immunohistochemistry with a peroxidase-linked antibody, and neural architecture is revealed by reduced silver staining. This makes visible in histological sections the same GFP-labeled cells seen with confocal microscopy, but with the especial advantage that neuropil structures are also revealed at the level of individual cells and neuron processes. Not only does this allow the physical relationships among intracellularly labeled neurons to be determined by reference to specific features in the neuropil but it also enables a function to be ascribed provisionally to particular regions of neuropil. These methods have particular utility for mapping morphological information on specific neurons in the context of central nervous system architecture, both in adult Drosophila and during development.

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