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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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Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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A Guide to Structured Illumination TIRF Microscopy at High Speed with Multiple Colors
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基于多焦结构化照明显微镜的极化分辨率超高分辨率第二和生成成像.

Yong Zhang, Chenshuang Zhang, Renlong Zhang

    Optics letters
    |March 15, 2024
    PubMed
    概括

    研究人员开发了一种新的超高分辨率显微镜技术,将多焦结构化照明显微镜 (MSIM) 与极化分辨第二生成 (PSHG) 结合起来,以揭示肌中详细的原结构.

    科学领域:

    • 生物物理学的生物物理.
    • 显微镜的使用方法
    • 材料科学 材料科学 材料科学

    背景情况:

    • 极化解决的第二子生成 (PSHG) 显微镜分析了原蛋白结构.
    • 目前的PSHG分辨率受到光学衍射的限制,平均的是原纤维的特性.
    • 需要超高分辨率成像来分辨更细的原结构.

    研究的目的:

    • 为了实现二极化分辨率超高分辨率成像的第二和生成 (SHG) 信号.
    • 为了克服原结构分析中的衍射极限.
    • 为了研究生物组织中的纳米级原组织.

    主要方法:

    • 结合多焦结构照明显微镜 (MSIM) 与PSHG.
    • 使用MSIM来提高SHG成像的分辨率.
    • 应用了该技术来分析小鼠尾部肌中的原纤维.

    主要成果:

    • 实现了极化分辨率超高分辨率的SHG信号成像.
    • 在小鼠尾中观察到周期性结构,平均距离为277nm.
    • 在这些周期性结构中发现了纤维素方向的规律,交替的安排.

    结论:

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    • 开发的MSIM-PSHG技术可以实现对原蛋白的超高分辨率成像.
    • 在肌原蛋白中揭示了以前未被观察到的纳米级周期结构.
    • 在这些结构中展示了一种规律的,交替的纤维状组织模式,为原组织提供了新的见解.