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Updated: Aug 20, 2026

Correlative Microscopy for 3D Structural Analysis of Dynamic Interactions
Published on: June 24, 2013
Electron microscopy of cells showing viral cytopathic effects in Papanicolaou smears
Abstract:
A technique is described whereby cells showing cytologic changes suggestive of virus infection by light microscopy can be processed further for examination in the electron microscope so that virus particles present in the cell can be visualized directly. We present the results of electron microscopy of over 100 Papanicolaou-stained smears processed this way. The morphologic changes in the cells and the ultrastructural appearances of the virus particles are demonstrated. This technique is particularly valuable for retrospective studies of mounted cytologic or histologic material. It has also proven to be a valuable research tool in the study of human polyomavirus and human wart virus infection.
Insights
A new method allows direct visualization of virus particles in cells using electron microscopy after light microscopy screening. This technique aids in studying viral infections and analyzing historical cytologic samples.
Area of Science:
- * Cellular pathology
- * Virology
- * Microscopy
Background:
- * Identifying virus infections often relies on observing cellular changes.
- * Direct visualization of virus particles can be challenging with standard methods.
Purpose of the Study:
- * To describe a technique for electron microscopic examination of Papanicolaou-stained smears.
- * To enable direct visualization of virus particles within cells exhibiting cytologic changes.
Main Methods:
- * Processing Papanicolaou-stained cytologic smears for electron microscopy.
- * Examining over 100 processed smears using electron microscopy.
Main Results:
- * Demonstration of cellular morphologic changes indicative of viral infection.
- * Visualization of virus particles' ultrastructural appearances.
- * Successful application to over 100 Papanicolaou-stained smears.
Conclusions:
- * The described technique facilitates direct visualization of virus particles in cytologic samples.
- * Valuable for retrospective analysis of mounted cytologic and histologic materials.
- * Effective research tool for studying human polyomavirus and human wart virus infections.
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