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相关概念视频

Super-resolution Fluorescence Microscopy01:37

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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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Volume Segmentation and Analysis of Biological Materials Using SuRVoS Super-region Volume Segmentation Workbench
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长轴距离的双螺旋点扩散函数用于3D体积超分辨率成像.

Yuya Nakatani1, Scott Gaumer2, Yoav Shechtman3,4,5

  • 1Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States.

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概括
此摘要是机器生成的。

这项研究简化了全细胞的3D超分辨率显微镜,使用双螺旋点扩散函数 (DH-PSF). 这种方法可以实现无成像,提高细胞结构的速度和分辨率.

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科学领域:

  • 生物物理学的生物物理.
  • 显微镜的使用方法
  • 细胞生物学 细胞生物学

背景情况:

  • 单分子定位显微镜 (SMLM) 提供超高分辨率成像,超出光衍射极限.
  • 工程点传播函数 (PSF) 将SMLM扩展到3D成像,但对于像哺乳动物细胞这样的厚样本仍然存在挑战.
  • 目前用于厚样品的3D SMLM通常需要复杂的多切片采集和后处理.

研究的目的:

  • 为了简化厚厚的生物样本的3D超分辨率成像工作流程.
  • 为了证明长轴范围双螺旋 (DH) -PSFs对于无3D SMLM的实用性.
  • 为了提高成像速度和分辨率在细胞结构的3D SMLM.

主要方法:

  • 使用光珠的DH-PSF定位精度的实验基准测试.
  • 使用DNA-PAINT.使用哺乳动物细胞 (U-2 OS) 3D SMLM 中DH-PSF性能的量化.
  • 应用深度学习算法用于定位密集发射器.

主要成果:

  • 长轴距离的DH-PSF被实验验证为3D SMLM.
  • 对哺乳动物细胞中核膜蛋白质膜B1的成像进行了量化.
  • 深度学习通过定位密集发射器显著提高了成像速度和分辨率.

结论:

  • 长轴距离的DH-PSF能够对整个哺乳动物细胞进行无的3D超分辨率成像.
  • 开发的方法简化了体积纳米图像的实验和分析程序.
  • 这种方法有助于在厚厚的生物样本中以3D形式获得纳米级结构信息.