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相关概念视频

Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

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Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
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相关实验视频

Updated: Jun 19, 2025

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope
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后聚焦:使用无标签时隔显微镜的扩散模型进行自动选择性获得后高通量聚焦恢复.

Kwan-Ling Wu1, Melisa J Montalvo1, Prashant S Menon1

  • 1William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX 77204, United States.

Bioinformatics (Oxford, England)
|July 23, 2024
PubMed
概括

后聚焦使用扩散模型来固定来自活细胞显微镜的模糊图像,改善细胞跟踪和分析,用于高通量研究.

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Single-Molecule Tracking Microscopy - A Tool for Determining the Diffusive States of Cytosolic Molecules
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Simultaneous Multicolor Imaging of Biological Structures with Fluorescence Photoactivation Localization Microscopy
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Simultaneous Multicolor Imaging of Biological Structures with Fluorescence Photoactivation Localization Microscopy

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相关实验视频

Last Updated: Jun 19, 2025

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope
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From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope

Published on: October 9, 2014

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Single-Molecule Tracking Microscopy - A Tool for Determining the Diffusive States of Cytosolic Molecules
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Simultaneous Multicolor Imaging of Biological Structures with Fluorescence Photoactivation Localization Microscopy
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科学领域:

  • 细胞生物学 细胞生物学
  • 显微镜的使用方法
  • 计算机成像成像技术

背景情况:

  • 高通量时隔成像对于单细胞分析至关重要.
  • 无标签相对比显微镜可提供非侵入性活细胞成像.
  • 由于细胞迁移,焦点外的细胞在时间间隔序列中很常见.

研究的目的:

  • 开发一种用于纠正活细胞显微镜中失焦图像的计算方法.
  • 为了提高从时间间隔视频数据的细胞分析的准确性.

主要方法:

  • 实现了一个分类器来检测失焦图像.
  • 利用一个无噪声扩散概率模型来恢复焦点图像.
  • 将该方法应用于迁移免疫细胞的时延序列.

主要成果:

  • 扩散模型在图像质量和细胞边界定义方面表现优于深度歧视模型.
  • 后聚焦提高了细胞检测和接触者识别的准确性.
  • 该方法增加了时间间隔实验中可用的视频的产量.

结论:

  • 在无标签活细胞显微镜中,PostFocus有效地纠正失焦图像.
  • 这种方法可以提高下游图像分析的准确性和数据产量.
  • 这种方法增强了高通量时隔成像在细胞生物学研究中的实用性.