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Related Concept Videos

Simple Staining Technique01:24

Simple Staining Technique

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OverviewStaining techniques in microscopy enhance the visualization of microorganisms by increasing contrast and allowing the differentiation of cellular structures. Simple staining is one of the fundamental methods used to observe the basic morphological characteristics of microorganisms, including their size, shape, and arrangement. This method relies on the application of a single dye to stain the entire cell, producing a clear contrast between the cell and the background.FixationFixation is...
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Two basic types of preparation are used to visualize specimens with a light microscope: wet mounts and fixed specimens.
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
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Mitochondria and Endoplasmic Reticulum Imaging by Correlative Light and Volume Electron Microscopy
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A OneStep Solution to Fix and Stain Cells for Correlative Live and Fixed Microscopy.

Katrina B Velle1, Carline Fermino do Rosário1, Patricia Wadsworth1

  • 1Department of Biology, University of Massachusetts, Amherst, Massachusetts.

Current Protocols
|November 26, 2021
PubMed
Summary

This study introduces a rapid, single-step protocol for fixing, permeabilizing, and staining cells directly on a microscope. This method enables quick visualization of subcellular structures and cellular dynamics, especially in organisms lacking fluorescent protein tools.

Keywords:
cell biologycorrelative microscopycytoskeletonlive imagingmicroscopystaining

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Area of Science:

  • Cell Biology
  • Microscopy Techniques
  • Molecular Biology

Background:

  • Correlating subcellular structures with cellular behaviors is challenging in organisms lacking fluorescent protein fusion tools.
  • Traditional multi-step fixation and staining protocols are time-consuming, often taking hours.
  • Existing methods limit the study of dynamic cellular processes in non-model organisms.

Purpose of the Study:

  • To develop a rapid, single-step protocol for fixing, permeabilizing, and staining cells on a microscope.
  • To enable visualization of subcellular structures and dynamic cellular behaviors in challenging model systems.
  • To streamline cell preparation for microscopy, reducing artifact identification time.

Main Methods:

  • A one-step protocol combining fixation, permeabilization, and staining of mammalian cells.
  • Utilizes well-characterized small molecules for staining nuclei, mitochondria, and actin networks.
  • Direct visualization during the process allows for rapid optimization and artifact detection.

Main Results:

  • Satisfactory cell staining achieved within minutes, significantly faster than traditional methods.
  • Enabled direct correlation of subcellular structures with dynamic cellular behaviors.
  • Facilitated rapid optimization of fixation and staining parameters.
  • Identified fixation artifacts more easily.

Conclusions:

  • The developed one-step protocol significantly accelerates cell preparation for microscopy.
  • This method is particularly valuable for studying dynamic cellular processes in organisms lacking genetic tools for fluorescent labeling.
  • It offers a faster and more efficient alternative to conventional multi-step protocols for cell fixation and staining.