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Related Experiment Video

Updated: Dec 25, 2025

Nanoscopic Imaging of Human Tissue Sections via Physical and Isotropic Expansion
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Nanoscale imaging using differential expansion microscopy.

Sebastian P Pernal1,2, Asiri Liyanaarachchi1, Domenico L Gatti2,3

  • 1Department of Physiology, Wayne State University School of Medicine, 540 E. Canfield, 5245, 5215 Scott Hall, Detroit, MI, 48201, USA.

Histochemistry and Cell Biology
|March 21, 2020
PubMed
Summary
This summary is machine-generated.

Differential Expansion Microscopy (DiExM) offers a rapid, cost-effective method for nanometer-scale biological specimen analysis. This advanced technique enhances diagnostic pathology by enabling precise disease identification from tissue samples.

Keywords:
Differential expansionMachine learningNanoscale imagingOptical microscopy

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Area of Science:

  • Biotechnology
  • Cell Biology
  • Pathology

Background:

  • Immunoelectron microscopy is the gold-standard for diagnostic pathology but is expensive and time-consuming.
  • Expansion microscopy (ExM) offers improved cellular imaging with enhanced resolution.
  • Further optimization of ExM is needed for broader diagnostic applications.

Purpose of the Study:

  • To develop an optimized protocol for expansion microscopy (ExM) with enhanced expansion capabilities.
  • To investigate the anisotropic nature of ExM in biological specimens.
  • To integrate machine learning (ML) with ExM for precise nanometer-scale analysis of cellular structures.

Main Methods:

  • Developed an optimized fixation protocol for improved cellular morphology and expansion.
  • Implemented an ExM procedure achieving up to eightfold lateral and over 500-fold volumetric expansion.
  • Applied image analysis and ML algorithms to assess differential expansion in cellular components.

Main Results:

  • The optimized ExM protocol preserves cellular morphology while maximizing expansion.
  • ExM exhibits anisotropic expansion properties across different tissues and cellular structures.
  • Differential Expansion Microscopy (DiExM) precisely quantifies nanometer-scale cellular differences.

Conclusions:

  • DiExM provides a powerful tool for high-resolution profiling of biological specimens.
  • This method holds significant potential for precise, rapid, and inexpensive disease diagnosis.
  • DiExM advances cellular imaging and diagnostic pathology capabilities.