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Related Concept Videos

Cryo-electron Microscopy01:28

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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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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.
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Related Experiment Video

Updated: Mar 31, 2026

Visualization of ATP Synthase Dimers in Mitochondria by Electron Cryo-tomography
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An ultra-rapid cryo-technique for complex organisms.

T Irdani1, A Fortunato2, R Torre3

  • 1CRA Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, 50125 Firenze, Italy.

Cryobiology
|October 27, 2015
PubMed
Summary
This summary is machine-generated.

A novel cryopreservation technique using ultra-rapid cooling (URC) and a low cryoprotectant technique (LCPT) allows adult Caenorhabditis elegans worms to survive liquid nitrogen storage with 85% success. This method is effective for both unicellular and multicellular organisms.

Keywords:
C. elegansCooling-rateCryopreservationLong-term storageLow cryoprotectant techniqueOrganisms cryostorageThermal-analysisVitrification

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Area of Science:

  • Cryobiology
  • Developmental Biology
  • Nematology

Background:

  • Caenorhabditis elegans is a vital model organism for biological research.
  • Existing cryopreservation methods have limitations for complex multicellular organisms.

Purpose of the Study:

  • To adapt a rapid cooling cryopreservation technique for adult Caenorhabditis elegans.
  • To evaluate the efficacy of a novel Low CryoProtectant Technique (LCPT) combined with Ultra Rapid Cooling (URC).

Main Methods:

  • Application of LCPT and URC to adult C. elegans.
  • Utilizing reduced sample volumes and a nylon carrier for rapid cooling.
  • Storage in liquid nitrogen at -196°C.

Main Results:

  • Adult C. elegans demonstrated a high survival rate of 85% after cryopreservation.
  • The technique meets vitrification requirements.
  • The method is effective for both unicellular and multicellular organisms.

Conclusions:

  • The developed LCPT and URC method is a highly effective cryopreservation technique for adult C. elegans.
  • This technique offers a simpler and versatile approach for cryostorage of diverse biological samples.
  • It is suitable for both short-term and long-term storage in liquid nitrogen.