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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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Cryopreservation halts biological processes using low temperatures to preserve cells and tissues. This overview details cryotechnology for freezing, storage, and thawing, crucial for cell therapy and tissue engineering.

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Area of Science:

  • Cryobiology
  • Biotechnology
  • Biopreservation technologies

Background:

  • Cryopreservation is essential for long-term storage of biological materials.
  • Low temperatures halt biochemical processes, maintaining structural and functional integrity.
  • Cryopreservation is vital for cell therapy, tissue engineering, and assisted fertilization.

Purpose of the Study:

  • To provide a comprehensive overview of cryotechnology.
  • To detail technologies for freezing, storage, and thawing of living cells.
  • To cover cryoprotective agents, cryo-imaging, microfluidics, and biobanking equipment.

Main Methods:

  • Review of existing cryopreservation technologies.
  • Discussion of cryoprotective agents and their mechanisms.
  • Examination of freezing, storage, and thawing equipment and techniques.

Main Results:

  • Detailed examination of the freezing process, including cryoprotective agents, cryo-imaging, microfluidics, and equipment.
  • Focus on thawing processes and hypothermic preservation for short-term storage.
  • Overview of current advancements in cryotechnology.

Conclusions:

  • Cryopreservation technologies are critical for various biomedical applications.
  • Understanding freezing and thawing processes is key to successful long-term preservation.
  • This work offers insights into current and emerging cryopreservation methods.