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Related Concept Videos

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...
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.
Total Internal Reflection Fluorescence Microscopy01:05

Total Internal Reflection Fluorescence Microscopy

Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
Immunogold Electron Microscopy01:20

Immunogold Electron Microscopy

Immunoelectron microscopy utilizes immunogold labeling of endogenous proteins with specific antibodies to detect and localize these proteins in cells and tissues. The procedure provides insights into the distribution and quantification of protein under different stimulation conditions offering clues about their functions. Conjugating highly electron-dense gold particles with primary or secondary antibodies allow antigen detection on and within cells, with high resolution and specificity.
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,...

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Immunofluorescence to Monitor the Cellular Uptake of Human Lactoferrin and its Associated Antiviral Activity Against the Hepatitis C Virus
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Immunofluorescence microscopy.

Diane C Shakes1, David M Miller, Michael L Nonet

  • 1Department of Biology, College of William and Mary, Williamsburg, Virginia, USA.

Methods in Cell Biology
|January 10, 2012
PubMed
Summary
This summary is machine-generated.

Researchers can improve immunofluorescence microscopy in C. elegans by using specialized fixation and permeabilization methods. These techniques overcome the worm's cuticle barrier, enhancing protein localization and expression analysis.

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Area of Science:

  • Cell Biology
  • Developmental Biology
  • Biochemistry

Background:

  • Immunofluorescence microscopy is crucial for protein localization and expression analysis.
  • The dense cuticle of C. elegans presents a significant barrier to antibody penetration.
  • Standard immunofluorescence protocols are often ineffective in C. elegans.

Purpose of the Study:

  • To outline effective fixation and permeabilization strategies for C. elegans immunofluorescence.
  • To provide a resource for antibody selection and background reduction in C. elegans studies.
  • To discuss methods for generating custom antisera against C. elegans antigens.

Main Methods:

  • Development and application of alternative fixation techniques.
  • Optimization of permeabilization protocols for whole C. elegans and freeze-fractured samples.
  • Evaluation of antibody reagents and strategies for minimizing non-specific binding.

Main Results:

  • Successful robust immunohistochemical staining of C. elegans tissues.
  • Identification of effective antibody reagents for C. elegans research.
  • Methods for reducing background noise in immunofluorescence imaging.

Conclusions:

  • Specialized protocols are essential for successful immunofluorescence in C. elegans.
  • Optimized techniques enable accurate assessment of protein localization and expression.
  • This work provides valuable methods for the C. elegans research community.