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A new multiparameter flow cytometer: optical and electrical cell analysis in combination with video microscopy in
J Wietzorrek1, N Plesnila, A Baethmann
1Max-Planck-Institut für Biochemie, Martinsried, Germany. jochen.wietzorrek@icf.med.uni-muenchen.de
Cytometry
|April 23, 1999
Summary
Researchers developed a novel flow cytometer combining electrical cell volume analysis with advanced optical measurements. This instrument enables simultaneous assessment of multiple physiological parameters for comprehensive biomedical research.
Area of Science:
- Biomedical Engineering
- Cell Biology
- Analytical Chemistry
Background:
- Commercially available flow cytometers often lack the capabilities for complex biomedical research.
- Investigating cell volume regulation requires simultaneous electrical volume measurement and multichannel fluorescence analysis.
Purpose of the Study:
- To design and construct a novel nonsorting flow cytometer.
- To enable simultaneous acquisition of seven parameters, including electrical cell volume and fluorescence.
- To integrate flow cytometry with imaging capabilities.
Main Methods:
- Developed a flow cytometer with a tunable argon-ion laser and arc lamp for excitation.
- Incorporated electrical Coulter principle for cell volume measurement.
- Integrated a flow video microscope with flash illumination for real-time particle imaging.
Main Results:
- Simultaneous acquisition of fluorescence, light scatter, cell volume, and flow cytometric imaging.
- Enabled flexible ratiometric fluorescence analysis using spatial filtering.
- Demonstrated particle imaging with high-speed flash illumination to prevent smear effects.
Conclusions:
- The developed instrument successfully combines Coulter measurements with flexible optical analysis.
- Integrating a video microscope bridges the gap between flow cytometry and image cytometry.
- The novel flow cytometer meets demands for advanced biomedical research.