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Flow Cytometry

Flow Cytometry

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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Related Experiment Video

Updated: May 22, 2025

Simultaneous Assessment of Kinship, Division Number, and Phenotype via Flow Cytometry for Hematopoietic Stem and Progenitor Cells

Simultaneous Assessment of Kinship, Division Number, and Phenotype via Flow Cytometry for Hematopoietic Stem and Progenitor Cells

Published on: March 24, 2023

Single-Calibration Cell Size Measurement With Flow Cytometry.

Philip Davies¹, Massimo Cavallaro^1,2, Daniel Hebenstreit¹

¹School of Life Sciences, University of Warwick, Coventry, UK.

Cytometry. Part a : the Journal of the International Society for Analytical Cytology

|March 12, 2025

Summary

This summary is machine-generated.

Flow cytometry can now accurately measure cell size in absolute units. This calibration method ensures consistent cell size measurements across different instrument settings, improving high-throughput biological research.

Keywords:

calibration cell size computational biology flow cytometry

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Area of Science:

Biomedical Research
Cell Biology
Analytical Chemistry

Background:

High-throughput cell size measurement is crucial in biomedical research.
Current flow cytometry tools provide only arbitrary size proxies, limiting accuracy and consistency.
Instrument settings variability affects the reliability of cell size data.

Purpose of the Study:

To develop and validate a method for calibrating flow cytometry scatter signals with absolute cell diameter.
To demonstrate that this calibration is robust across different instrument settings.
To enable the recording of cell size in absolute units alongside other flow cytometry data.

Main Methods:

Flow cytometric sorting of mammalian cells based on scatter parameters.
Cell size determination using a Coulter counter for calibration.
Development of linear models to relate scatter signals to absolute cell diameter.
Implementation of a linear transformation for inter-setting calibration.

Main Results:

Successful calibration of flow cytometry scatter signals with absolute cell diameter.
Demonstration of calibration conservation across varying laser settings.
A straightforward procedure for converting arbitrary flow cytometry units to absolute cell size.
Enabling correlation of absolute cell size with fluorescence data.

Conclusions:

Flow cytometry scatter signals can be accurately calibrated to provide absolute cell size measurements.
This method enhances the reliability and comparability of cell size data in high-throughput studies.
The developed procedure allows for standardized cell size recording on flow cytometers.