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Related Concept Videos

Three-Dimensional Microscopy in Microbiology01:28

Three-Dimensional Microscopy in Microbiology

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Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...
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Three-dimensional Optical-resolution Photoacoustic Microscopy
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Multicolor Photoacoustic Volumetric Imaging of Subcellular Structures.

Aihui Sun1, Yaoyao Ji1, Yaxi Li1

  • 1Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen 518055, China.

ACS Nano
|January 26, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a novel 3D photoacoustic microscopy technique that significantly improves axial resolution, enabling detailed visualization of subcellular structures and their connections within melanoma cells.

Keywords:
3D imagingmulticolor imagingphotoacoustic microscopysubcellular labelingsubcellular structures

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Area of Science:

  • Biomedical Imaging
  • Optical Microscopy
  • Cell Biology

Background:

  • Photoacoustic imaging (PAI) is a powerful tool for biological imaging.
  • Optical resolution photoacoustic microscopy (OR-PAM) offers high lateral resolution but struggles with 3D subcellular imaging due to limited axial resolution.

Purpose of the Study:

  • To develop a multicolor 3D photoacoustic microscopy technique with enhanced axial resolution.
  • To visualize volumetric subcellular structures and their interconnections in melanoma cells.

Main Methods:

  • Developed a multicolor 3D photoacoustic microscopy system.
  • Achieved high lateral/axial resolutions (0.42/2 μm at 532 nm and 0.5/2.5 μm at 780 nm).
  • Performed multicolor imaging of labeled subcellular components (microtubules, clathrin-coated pits, mitochondria).

Main Results:

  • Successfully visualized volumetric subcellular structures in melanoma cells using intrinsic contrast.
  • Demonstrated multicolor imaging of labeled microtubules/clathrin-coated pits and microtubules/mitochondria in a single scan.
  • Revealed internal connections between subcellular structures through quantitative spatial distribution analysis.

Conclusions:

  • The proposed OR-PAM system significantly enhances axial resolution for 3D subcellular imaging.
  • This technique provides a valuable tool for studying subcellular structures and cytophysiology.
  • Enables visualization of organelle interactions and cellular dynamics.