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Related Concept Videos

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.
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...
Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
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.
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...

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Related Experiment Video

Updated: Jun 20, 2026

Quantitative Immunofluorescence to Measure Global Localized Translation
09:13

Quantitative Immunofluorescence to Measure Global Localized Translation

Published on: August 22, 2017

Quantitative fluorescence microscopy techniques.

Alessandro Esposito1, Simon Schlachter, Gabriele S Kaminski Schierle

  • 1Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK.

Methods in Molecular Biology (Clifton, N.J.)
|September 22, 2009
PubMed
Summary
This summary is machine-generated.

Quantitative fluorescence microscopy provides advanced tools for visualizing and analyzing cytoskeletal dynamics and molecular interactions within living cells. These techniques enable detailed studies of cellular processes and disease mechanisms.

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Area of Science:

  • Cell Biology
  • Biophysics
  • Microscopy

Background:

  • Fluorescence microscopy offers high-resolution, non-invasive imaging of cellular structures.
  • Recent advancements in fluorescent labeling and optical techniques have significantly improved imaging capabilities.
  • The cytoskeleton is a dynamic and highly organized structure crucial for cellular functions.

Purpose of the Study:

  • To highlight the utility of quantitative fluorescence microscopy in studying cellular structures.
  • To demonstrate how advanced techniques can quantify molecular events in living cells.
  • To explore the application of these methods in understanding cellular physiology and pathology.

Main Methods:

  • Utilizing advanced fluorescent labeling (e.g., fluorescent proteins, quantum dots).
  • Employing super-resolution and quantitative optical methods.
  • Applying techniques such as fluorescence lifetime imaging microscopy, Förster resonance energy transfer, and photobleaching kinetics (FRAP, FLIP, FLAP).

Main Results:

  • Improved imaging of cytoskeletal structures.
  • Mapping of protein-protein interactions.
  • Characterization of axonal transport and biomolecular diffusion.

Conclusions:

  • Quantitative fluorescence microscopy provides powerful tools for cellular analysis.
  • These techniques are essential for understanding molecular machineries in physiological and pathological contexts.
  • Advanced imaging enables detailed insights into the dynamic nature of the cytoskeleton.