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Related Experiment Videos

DAPI as a useful stain for nuclear quantitation.

B I Tarnowski1, F G Spinale, J H Nicholson

  • 1Department of Pathology, Medical University of South Carolina, Charleston 29425.

Biotechnic & Histochemistry : Official Publication of the Biological Stain Commission
|January 1, 1991
PubMed
Summary
This summary is machine-generated.

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4

Area of Science:

  • Cell Biology
  • Microscopy

Background:

  • Nuclear DNA visualization is crucial for cell studies.
  • Accurate cell counting and morphology assessment are vital.

Purpose of the Study:

  • To evaluate 4',6-diamidino-2-phenylindole (DAPI) as a nuclear stain for light and electron microscopy.
  • To assess the impact of DAPI staining on cellular ultrastructure and its utility for multiple analyses.

Main Methods:

  • Cells were stained with DAPI for nuclear visualization.
  • Light microscopy was used to count nuclei and assess cell morphology.
  • Stained cells were subsequently processed for electron microscopy to examine ultrastructure.

Main Results:

  • DAPI effectively stained nuclear DNA in both living and fixed cells.

Related Experiment Videos

  • DAPI staining allowed for accurate nucleus counting and gross cell morphology assessment.
  • No ultrastructural alterations were observed in DAPI-stained cells compared to unstained controls.

    • Conclusions:

    • DAPI is a reliable and simple fluorescent stain for nuclear DNA.
    • DAPI staining does not induce ultrastructural damage, enabling sequential light and electron microscopy.
    • This method permits multiple analyses on the same cell sample, reducing the need for duplicates.