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Related Concept Videos

Three-Dimensional Microscopy in Microbiology01:28

Three-Dimensional Microscopy in Microbiology

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...
Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

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,...
Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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 developed.
Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

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.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
Two-Dimensional Microscopy in Microbiology01:29

Two-Dimensional Microscopy in Microbiology

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...
Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...

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Methods for imaging thick specimens: confocal microscopy, deconvolution, and structured illumination.

John M Murray

    Cold Spring Harbor Protocols
    |December 3, 2011
    PubMed
    Summary
    This summary is machine-generated.

    Viewing thick specimens under a microscope is challenging due to blurred images and artifacts. This review covers optical, computational, and mixed techniques for clear imaging of thick samples, enabling detailed visualization of structures like cells within living tissue.

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    Area of Science:

    • Microscopy
    • Optical Imaging
    • Biotechnology

    Background:

    • Conventional microscopy struggles with thick specimens, producing blurred images from out-of-focus regions.
    • High background noise, light scattering, and optical aberrations impede detailed observation in thick samples.
    • Artifacts from physical sectioning limit the study of intact living tissues.

    Purpose of the Study:

    • To review advanced microscopy techniques for imaging thick biological specimens.
    • To explain methods enabling optical sectioning of intact living tissues.
    • To highlight solutions for overcoming imaging challenges in microscopy of thick samples.

    Main Methods:

    • Optical methods: Confocal microscopy and multiphoton microscopy.
    • Computational methods: Deconvolution techniques.
    • Mixed approaches: Structured illumination microscopy.

    Main Results:

    • These techniques allow for optical sectioning, revealing details within thick specimens.
    • Clear imaging of structures, such as cells within living tissue, is achieved.
    • Artifacts associated with physical sectioning are avoided, preserving sample integrity.

    Conclusions:

    • Advanced optical and computational microscopy techniques provide effective solutions for imaging thick specimens.
    • These methods facilitate detailed visualization of biological structures within living tissues without physical sectioning.
    • The described techniques enhance the study of complex biological systems by enabling clear, artifact-free imaging.