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Related Experiment Video

Updated: Apr 6, 2026

Imaging and Quantification of Intact Neuronal Dendrites via CLARITY Tissue Clearing
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Clarifying Tissue Clearing.

Douglas S Richardson1, Jeff W Lichtman2

  • 1Harvard Center for Biological Imaging, Harvard University, Cambridge, MA 02138, USA; Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA.

Cell
|July 18, 2015
PubMed
Summary

Tissue clearing techniques enable deep imaging of biological specimens by reducing light scatter. Recent innovations and microscopy advances are improving visualization of three-dimensional tissues.

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Area of Science:

  • Biological imaging
  • Biophysics
  • Microscopy

Background:

  • Biological specimens are inherently three-dimensional.
  • Light scatter obscures deep tissue imaging.
  • Tissue clearing aims to mitigate light scatter for enhanced visualization.

Purpose of the Study:

  • To review the physical principles of light scatter in biological tissues.
  • To describe the mechanisms behind various tissue clearing techniques.
  • To discuss recent advancements in light microscopy for imaging cleared tissues.

Main Methods:

  • Review of physical principles of light scatter.
  • Description of mechanisms of established and novel clearing techniques.
  • Overview of advanced light microscopy methods for cleared samples.

Main Results:

  • Understanding light scatter is crucial for deep tissue imaging.
  • Various clearing methods (e.g., refractive index matching, dehydration) effectively reduce light scatter.
  • New microscopy techniques enable high-resolution imaging of cleared, large-volume biological samples.

Conclusions:

  • Tissue clearing is essential for high-resolution, deep-tissue imaging.
  • Recent innovations in clearing and microscopy have significantly advanced biological visualization.
  • This review provides a foundation for understanding and applying these techniques.