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Immunofluorescence Microscopy01:12

Immunofluorescence Microscopy

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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.
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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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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 Microscopy01:37

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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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Fluorescence and Phosphorescence: Instrumentation01:25

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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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Fluorescence Microscopy: A Field Guide for Biologists.

Lucy H Swift1, Pina Colarusso2

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Methods in Molecular Biology (Clifton, N.J.)
|February 26, 2022
PubMed
Summary
This summary is machine-generated.

This guide introduces essential concepts in fluorescence microscopy for life science researchers. It aims to demystify the specialized language and techniques, enabling new users to effectively apply this powerful imaging tool in the lab.

Keywords:
Data management planDigital imageFluorescence microscopyImage acquisitionImaging workflowLateral resolutionMagnificationNumerical apertureNyquist samplingOptical microscopyResolution

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Area of Science:

  • Life Sciences
  • Biotechnology
  • Cell Biology

Background:

  • Optical microscopy enables visualization of sub-visible structures.
  • Fluorescence microscopy is crucial in life sciences for selective observation of molecules, organelles, and cells.
  • Specialized terminology and concepts in fluorescence microscopy can pose challenges for new researchers.

Purpose of the Study:

  • To provide an accessible introduction to fluorescence microscopy for novice researchers.
  • To explain essential concepts and the required mindset for utilizing fluorescence microscopy.
  • To facilitate the application of fluorescence microscopy in laboratory settings.

Main Methods:

  • Conceptual overview of fluorescence microscopy principles.
  • Explanation of key terminology and techniques.
  • Guidance on mindset for effective application.

Main Results:

  • New researchers will gain foundational knowledge of fluorescence microscopy.
  • Understanding of essential concepts and practical considerations for laboratory use.
  • Reduced barriers to entry for utilizing advanced imaging techniques.

Conclusions:

  • Fluorescence microscopy is a vital technique in modern life sciences.
  • This resource aims to empower new researchers to confidently use fluorescence microscopy.
  • Effective understanding of concepts enhances the application of this powerful technology.