Flow cytometry
![Front view of a desktop flow cytometer - the Becton-Dickinson Fluorescence activated cell sorter (FACSCalibur)](/Images/godic/202501/07/FACS-toestel2149.JPG")
![Analysis of a marine sample of photosynthetic picoplankton by flow cytometry showing three different populations (Prochlorococcus, Synechococcus, and picoeukaryotes)](/Images/godic/202501/07/Picoplancton_cytometrie2149.jpg")
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![Use of flow cytometry to measure copy number variation of a specific DNA sequence (Flow-FISH)](/Images/godic/202501/07/Flow-FISH_12149.JPG")
In biotechnology, flow cytometry is a laser- or impedance-based, biophysical technology employed in cell counting, cell sorting, biomarker detection and protein engineering, by suspending cells in a stream of fluid and passing them by an electronic detection apparatus. It allows simultaneous multiparametric analysis of the physical and chemical characteristics of up to thousands of particles per second.