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Related Concept Videos

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...
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.
Immunofluorescence Microscopy01:12

Immunofluorescence Microscopy

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.
The...
Fluorescence and Phosphorescence: Instrumentation01:25

Fluorescence and Phosphorescence: Instrumentation

Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.

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Open Source High Content Analysis Utilizing Automated Fluorescence Lifetime Imaging Microscopy
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Published on: January 18, 2017

Fluorescence microscopy-a historical and technical perspective.

Malte Renz1

  • 1Department of Obstetrics & Gynecology and Women's Health, Albert Einstein College of Medicine, Bronx, New York 10461; Eunice Kennedy Shriver Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892.

Cytometry. Part a : the Journal of the International Society for Analytical Cytology
|April 16, 2013
PubMed
Summary
This summary is machine-generated.

Fluorescence microscopy has driven cell biology discoveries for over 100 years. This review details its principles and evolution, aiding researchers in selecting imaging methods for specific scientific questions.

Keywords:
diffraction-limited microscopyfluorescence microscopyhistorical perspectivesuper-resolution microscopy

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Open Source High Content Analysis Utilizing Automated Fluorescence Lifetime Imaging Microscopy
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Area of Science:

  • Cell Biology
  • Microscopy
  • Biotechnology

Background:

  • Fluorescence microscopy has been pivotal in cell biology for over a century.
  • Technological advancements have significantly enhanced imaging and quantification capabilities.
  • A robust methodology now underpins fluorescence microscopy techniques.

Observation:

  • This work outlines the fundamental principles of fluorescence microscopy.
  • It traces the historical development of the technique.
  • The review covers the expanding array of available tools.

Findings:

  • Provides insight into the evolution of fluorescence microscopy.
  • Offers a comprehensive overview of current methodologies.
  • Highlights the advancements in visualization and quantification.

Implications:

  • Aids researchers in understanding the expanding toolkit of fluorescence microscopy.
  • Facilitates the selection of appropriate fluorescence microscopy methods for specific research objectives.
  • Supports informed decision-making in experimental design for cell biology studies.