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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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A fluorescence microscope uses fluorescent chromophores called fluorochromes, which can absorb energy from a light source and then emit this energy as visible light. Fluorochromes include naturally fluorescent substances (such as chlorophylls) and fluorescent stains that are added to the specimen to create contrast. Dyes such as Texas red and FITC are examples of fluorochromes. Other examples include the nucleic acid dyes 4’,6’-diamidino-2-phenylindole (DAPI), and acridine orange.
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相关实验视频

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Visualizing Single Molecular Complexes In Vivo Using Advanced Fluorescence Microscopy
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流马尔迪显微镜:矩阵联合结晶同时增强光和马尔迪成像.

Ethan Yang1,2, Xinyi Elaine Shen1,2, Hoku West-Foyle3,4

  • 1Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 1, 2023
PubMed
概括

与矩阵辅助激光脱/电离 (MALDI) 成像矩阵共同结晶的光体增加了亮度,使FluoMALDI. 这种技术结合了光显微镜和MALDI成像,用于增强生物样本分析.

关键词:
这就是FluoMALDI.马尔迪 (Maldi) 的成像技术共同结晶的结晶化光是一种光.影像成像技术 影像成像技术质谱测量质谱测量质谱测量质谱测量质量测量质谱测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量显微镜 显微镜是指使用显微镜.组织组织组织组织组织.

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科学领域:

  • 分析化学 分析化学
  • 生物医学成像技术 生物医学成像技术
  • 显微镜的使用方法

背景情况:

  • 矩阵辅助激光脱吸/电离 (MALDI) 成像提供了多功能,多重复合的能力.
  • 光显微镜提供高空间分辨率和特定的标签.
  • 由于样本操纵和注册问题,整合这些模式具有挑战性.

研究的目的:

  • 开发一种新的成像技术,FluoMALDI,通过与MALDI矩阵共同结晶光体.
  • 为了增强光体的亮度和放大组织自光,以改善成像.
  • 通过光显微镜和MALDI成像,使完全相同的生物样本能够无成像.

主要方法:

  • 用MALDI成像矩阵进行光体的联合结晶.
  • 用FluoMALDI应用于内源性和外源性光体.
  • 在大脑和脏组织部位上展示基于自光的FluoMALDI.

主要成果:

  • 通过联合结晶,光体的亮度提高了79倍.
  • 在相同的组织部位上,FluoMALDI成功地将光显微镜和MALDI成像技术结合起来.
  • 该方法允许在没有物理样本变化的情况下对两种模式中的相同细胞进行成像.
  • 对内源性和外源性光体以及自光体的可行性得到证明.

结论:

  • FluoMALDI代表了相关成像技术的重大进步,融合光和MALDI技术.
  • 增强的亮度和简化的注册可以促进结构功能显微镜成像.
  • 这种技术对细胞生物学,生物医学和病理学中的应用具有前景,特别是对于具有低光度的样本.