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The Extracellular Matrix01:42

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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At the transition from prophase to metaphase, there is a reduction in cohesion along the chromosomal arms, resulting in the resolution of sister chromatids. However, residual cohesin connections remain to hold the sister chromatids together until the transition from metaphase to anaphase. The residual connection prevents any premature separation of sister chromatids, blocking the risks of aneuploidy within the daughter cells.
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Related Experiment Video

Updated: Jan 26, 2026

Characterizing Extracellular Vesicles from Biological Fluids
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Published on: February 28, 2025

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[Advances in microfluidic chip-based extracellular vesicle separation].

Zerong Liao1, Yongrui Li1, Le Gu2

  • 1Beijing Institute of Technology, Beijing 100081, China.

Se Pu = Chinese Journal of Chromatography
|April 13, 2019
PubMed
Summary

Efficiently separating extracellular vesicles (EVs) from bodily fluids is crucial for disease diagnosis. Advanced microfluidic chip technology offers a promising solution for highly selective EV capture, improving upon traditional low-efficiency methods.

Keywords:
extracellular vesiclesmicrofluidic chipseparation

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Paper-based Devices for Isolation and Characterization of Extracellular Vesicles

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Area of Science:

  • Biotechnology
  • Nanotechnology
  • Biomedical Engineering

Background:

  • Extracellular vesicles (EVs) are lipid bilayer vesicles involved in crucial biological functions.
  • EV composition (proteins, lipids, nucleic acids) changes correlate with various diseases.
  • Accurate EV separation from complex biological samples is vital for medical research and liquid biopsies.

Purpose of the Study:

  • To address the limitations of traditional EV separation methods (low purity, low efficiency).
  • To explore the application of advanced microfluidic chip technology for efficient and selective EV separation.

Main Methods:

  • Review of recent research on microfluidic chip-based EV separation technologies.
  • Analysis of the advantages of microfluidics (miniaturization, integration, automation) for EV isolation.

Main Results:

  • Traditional EV separation methods suffer from low purity and efficiency.
  • Microfluidic chip technology presents a significant advancement in EV separation.
  • The integration of microfluidics with EV separation is a key research focus.

Conclusions:

  • There is an urgent need for improved EV separation techniques.
  • Microfluidic chips offer a promising avenue for developing efficient and highly selective EV isolation methods.
  • Further research in microfluidic-based EV separation is essential for advancing liquid biopsy and disease diagnostics.