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Related Concept Videos

Cryo-electron Microscopy01:28

Cryo-electron Microscopy

3.2K
Conventional electron microscopy (EM) involves dehydration, fixation, and staining of biological samples, which distorts the native state of biological molecules and results in several artifacts. Also, the high-energy electron beam damages the sample and makes it difficult to obtain high-resolution images. These issues can be addressed using cryo-EM, which uses frozen samples and gentler electron beams. The technique was developed by Jacques Dubochet, Joachim Frank, and Richard Henderson, for...
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Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
2.4K
Three-Dimensional Microscopy in Microbiology01:28

Three-Dimensional Microscopy in Microbiology

3
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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Two-Dimensional Microscopy in Microbiology01:29

Two-Dimensional Microscopy in Microbiology

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Two-dimensional (2D) microscopy encompasses a range of optical techniques that capture images within a single focal plane, offering detailed representations of microscopic structures. These techniques are essential in biological and medical research, enabling the visualization of cellular and subcellular structures with different levels of contrast and specificity.There are several major types of 2D microscopy, each with strengths and applications.Bright-Field MicroscopyBright-field microscopy...
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Transmission Electron Microscopy01:15

Transmission Electron Microscopy

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In 1931, physicist Ernst Ruska—building on the idea that magnetic fields can direct an electron beam just as lenses can direct a beam of light in an optical microscope—developed the first prototype of the electron microscope. This development led to the development of the field of electron microscopy. In the transmission electron microscope (TEM), electrons are produced by a hot tungsten element and accelerated by a potential difference in an electron gun, which gives them up to 400...
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Updated: Jun 8, 2025

Correlative Microscopy for 3D Structural Analysis of Dynamic Interactions
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Correlative Microscopy for 3D Structural Analysis of Dynamic Interactions

Published on: June 24, 2013

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Visualizing the virus world inside the cell by cryo-electron tomography.

Qunfei Zhou1, Shee-Mei Lok1,2

  • 1Program in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore.

Journal of Virology
|November 4, 2024
PubMed
Summary
This summary is machine-generated.

Cryo-electron tomography (cryo-ET) revolutionizes viral structural biology by visualizing virus-host interactions within cells. This technique advances understanding of viral infection mechanisms and pathogenesis.

Keywords:
Cryo-ETin situ structureinfectionvirus

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Area of Science:

  • Structural biology
  • Virology
  • Cell biology

Background:

  • Limited structural data exists on virus-host interactions within cells.
  • Purified virus structures are well-studied, but in situ dynamics remain elusive.

Purpose of the Study:

  • To review the application of cryo-electron tomography (cryo-ET) for in situ viral structure studies.
  • To highlight cryo-ET's capabilities in visualizing dynamic virus-host interactions.

Main Methods:

  • Cryo-focused ion beam (FIB) milling.
  • Cryo-electron tomography (cryo-ET).
  • In situ structural analysis of infected cells.

Main Results:

  • Cryo-ET enables visualization of viral particles and their interactions with host factors within infected cells.
  • Exemplary studies demonstrate cryo-ET's power in capturing dynamic viral processes.
  • Advancements in understanding viral infection and pathogenesis.

Conclusions:

  • Cryo-ET is a powerful tool for in situ structural studies of viruses.
  • This technique significantly enhances our comprehension of virus-host interactions.
  • Cryo-ET is crucial for advancing virology and developing antiviral strategies.