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Related Experiment Videos

Flow cytometry: a high-resolution instrument for everyone.

H B Steen, T Lindmo

    Science (New York, N.Y.)
    |April 27, 1979
    PubMed
    Summary
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    A novel flow cytometry configuration creates a stable, flat cell stream for precise DNA analysis. This easy-to-operate instrument achieves high resolution, enhancing cellular measurements.

    Area of Science:

    • Biotechnology
    • Cell Biology
    • Analytical Chemistry

    Background:

    • Flow cytometry is a crucial technique for analyzing cell characteristics.
    • Existing flow cytometer designs can present challenges in stability and ease of operation.
    • Accurate measurement of cellular DNA content is vital for various biological studies.

    Purpose of the Study:

    • To develop a new, stable, and user-friendly flow configuration for flow cytometry.
    • To improve the resolution and accuracy of cellular DNA measurements.
    • To present an innovative approach for analyzing stained cells.

    Main Methods:

    • A novel flow configuration was designed using a pressurized water jet to create a flat, laminar cell stream on a coverslip.
    • Stained cells were contained within a narrow sector of the water stream.

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  • Fluorescence microscopy with incident illumination and a pulse photometer, coupled to a multichannel pulse height analyzer, was employed for cell analysis.
  • Main Results:

    • The developed instrument demonstrated stable operation.
    • The flow cytometer achieved a resolution equal to or better than a coefficient of variance of 1.4% in cellular DNA measurements.
    • The system proved to be easy to operate.

    Conclusions:

    • The new flow configuration offers a stable and highly resolvable method for flow cytometry.
    • This technique provides an effective and accessible tool for accurate cellular DNA analysis.
    • The design represents a significant advancement in flow cytometry instrumentation.