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Related Concept Videos

Flow Cytometry01:23

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The development of flow cytometry techniques began in 1934 with initial attempts by Andrew Moldavan, a bacteriologist who counted the cells in a flowing capillary system. Moldavan pumped cells through a capillary tube focused under a microscope for visualization. The invention of photometry allowed the measurement of differentially-stained cells, and Louis Kamentsky developed the first multiparameter flow cytometer in 1965 to identify and count the cancer cells in cervical tissue specimens.
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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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Laser Sources for Traditional and Spectral Flow Cytometry.

William G Telford1

  • 1Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA. telfordw@mail.nih.gov.

Methods in Molecular Biology (Clifton, N.J.)
|March 25, 2024
PubMed
Summary
This summary is machine-generated.

Lasers are crucial for flow cytometry, enabling light scattering and fluorescence measurements. Choosing the right laser wavelength is vital for advanced cell analysis using conventional and spectral flow cytometry.

Keywords:
Deep ultravioletDiode-pumped solid-state laserFlow cytometryInfraredLaserLaser engineMerge moduleOptically pumped semiconductor laserSupercontinuumdiode

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Area of Science:

  • Biophotonics and Analytical Chemistry
  • Cellular and Molecular Biology
  • Instrumentation and Technology

Background:

  • Lasers are fundamental for flow cytometry, facilitating light scattering and fluorescence excitation.
  • Modern flow cytometers utilize multiple laser wavelengths to excite a diverse range of fluorescent probes.
  • The rise of spectral flow cytometry emphasizes the critical role of laser selection in multiparametric analysis.

Approach:

  • This chapter reviews available lasers for flow cytometry applications.
  • Guidance is provided for selecting laser wavelengths and characteristics tailored to modern cell analysis.
  • Recent advancements in laser technology for expanding wavelength options in cytometry are discussed.

Key Points:

  • Laser choice significantly impacts the capabilities of both conventional and spectral flow cytometry.
  • Optimizing laser selection enhances the precision and scope of multiparametric cell analysis.
  • Technological progress in laser development is continuously broadening the spectral capabilities of cytometry.

Conclusions:

  • Strategic laser selection is essential for maximizing the potential of contemporary flow cytometry techniques.
  • Understanding laser characteristics is key to achieving optimal results in advanced cell analysis.
  • Ongoing innovation in laser technology promises to further expand the applications of flow cytometry.