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Related Experiment Videos

Immuno-gold labeling for flow cytometric analysis.

R M Böhmer, N J King

    Journal of Immunological Methods
    |November 16, 1984
    PubMed
    Summary

    Colloidal gold particles enhance flow cytometry signals, enabling precise cell analysis. This gold labeling method is compatible with fluorescent markers for multiparameter cell identification and sorting.

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    Area of Science:

    • Immunology
    • Biotechnology
    • Cell Biology

    Background:

    • Flow cytometry is a crucial technique for cell analysis.
    • Current methods may have limitations in signal amplification and multiparameter analysis.

    Purpose of the Study:

    • To evaluate colloidal gold particles as a novel label for flow cytometry.
    • To assess signal amplification, specificity, and compatibility with existing labels.

    Main Methods:

    • Colloidal gold particles coated with goat anti-mouse immunoglobulin antibodies were used.
    • Cells were analyzed using flow cytometry with varying laser wavelengths.
    • Labeling involved combinations of FITC- and gold-conjugated antibodies.

    Main Results:

    • Gold-labeled cells demonstrated significant signal amplification (over 10-fold) at 632.8 nm.
    • The gold label provided sufficient specificity for quantitative cell discrimination.
    • Gold and fluorescent labels did not interfere, allowing for multiparameter analysis.
    • Cell viability remained unaffected by the gold labeling process.

    Conclusions:

    • Colloidal gold is a valuable tool for enhancing flow cytometry signal detection.
    • It enables quantitative discrimination and multiparameter analysis without compromising cell viability.
    • This technique facilitates biparametric cell analysis and sorting, even with low-energy lasers.

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