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Related Concept Videos

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...
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,...
Overview of Microscopy Techniques01:22

Overview of Microscopy Techniques

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...
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.
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...
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...

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Highly Resolved Intravital Striped-illumination Microscopy of Germinal Centers
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Functional optical imaging at the microscopic level.

Beatriz Y Salazar Vázquez1, Ciel Makena Hightower, Francesca Sapuppo

  • 1Universidad Juárez del Estado de Durango, Facultad de Medicina, Durango, México.

Journal of Biomedical Optics
|March 10, 2010
PubMed
Summary
This summary is machine-generated.

Functional microscopic imaging analyzes cellular components in living tissues to understand homeostasis. Challenges in optical access limit clinical application despite successful experimental results.

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Area of Science:

  • Physiology
  • Biomedical Engineering
  • Microscopy

Background:

  • Functional microscopic imaging of in vivo tissues is crucial for understanding cellular homeostasis.
  • Key parameters include endothelial shear stress, plasma layer dynamics, and oxygen gradients.

Purpose of the Study:

  • To characterize functional microvascular processes in living tissues.
  • To monitor phenomena maintaining homeostatic balance.

Main Methods:

  • Image shearing for blood vessel dimensions.
  • Photometric analysis of plasma layer extent.
  • Dual-slit methodology for blood flow velocity.
  • Direct oxygen concentration measurement in blood and tissue.
  • Development of paired mathematical approaches for transport properties.

Main Results:

  • Optical techniques successfully analyze living tissue under experimental conditions.
  • Characterization of shear stress, plasma layer, and oxygen gradients is achievable.

Conclusions:

  • Functional microscopic imaging provides insights into microvascular transport and homeostasis.
  • Clinical deployment is hindered by challenges in achieving adequate optical access to deep tissues.