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関連する概念動画

Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
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Confocal Fluorescence Microscopy01:16

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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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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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The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
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Two-Dimensional Microscopy in Microbiology01:29

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Two-dimensional (2D) microscopy encompasses a range of optical techniques that capture images within a single focal plane, offering detailed representations of microscopic structures. These techniques are essential in biological and medical research, enabling the visualization of cellular and subcellular structures with different levels of contrast and specificity.There are several major types of 2D microscopy, each with strengths and applications.Bright-Field MicroscopyBright-field microscopy...
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Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...
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多彩な脳内イメージングを可能にする多用途のミニチュア 2 光子顕微鏡

Runlong Wu1,2,3, Chunzhu Zhao4,5, Shan Qiu6

  • 1National Biomedical Imaging Center, State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, Peking-Tsinghua Center for Life Sciences, College of Future Technology, Peking University, Beijing, China. rlwu@bistu.edu.cn.

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まとめ
この要約は機械生成です。

FHIRM-TPM 3.0を開発しました ミニチュア顕微鏡で マウスの脳を 深く画像化します この高度な2フォトン顕微鏡システムは ニューロンの活動と細胞構造の多彩なイメージングを in vivoで可能にします

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科学分野:

  • 神経科学
  • 生物医学工学
  • 顕微鏡技術

背景:

  • 自由に行動する動物の 脳の深部画像は 神経回路を理解するために重要です
  • 既存の2光子顕微鏡システムは サイズ,柔軟性,画像の深さに制限があります.
  • 多色画像は 脳内の複雑な細胞・分子プロセスを解剖するのに不可欠です

研究 の 目的:

  • "FHIRM-TPM 3.0"を紹介する. 進化した脳イメージングのための新型コンパクト2フォトン顕微鏡です.
  • 自由に行動するマウスの 多色の脳画像処理の 能力を実証するためです
  • 神経科学の研究の様々な応用のためのシステムの汎用性と高解像度を紹介する.

主な方法:

  • ミニチュア2フォトン顕微鏡とブロードバンド反共鳴ホローコアファイバーの統合
  • 光学偏差の修正と深層組織への光収集の最適化.
  • 視野を拡大し,高次元の解像度を達成するために交換可能なオブジェクトの設計.
  • 多色刺激波長 (780,920,1030 nm) を使って同時に細胞活動を監視する.

主要な成果:

  • 820μmを超える深さで皮質ニューロンのイメージングを達成しました.
  • hippocampal Ca2+イメージングは,GRINレンズを使用して単一デンドリティック脊椎解像度で有効にしました.
  • 0.68μmから1.46μmまでの解像度で10倍のスケーラブルな視野 (最大1 × 0.8 mm2) を提供します.
  • APP/PS1マウスにおけるアミロイドプラークに対するミトコンドリアと細胞溶液のCa2+活性について,研究が成功しました.

結論:

  • FHIRM-TPM 3.0は,神経科学の研究における多彩の深層脳イメージングのための汎用的で強力なツールです.
  • このシステムの小型化と高度な光学設計は,自由に行動する被験者の体内の研究を容易にする.
  • 高解像度で深部組織を画像化することで 神経疾患や脳機能の研究が進んでいます