SIGRID GOMBERT / SCIENCE PHOTO LIBRARY SIGRID GOMBERT / SCIENCE PHOTO LIBRARY
Cytology laboratory. Close-up of a technician operating a fluorescence-activated cell sorting (FACS) machine. FACS is a specialised type of flow cytometry. It provides a method for sorting a heterogeneous mixture of biological cells into two or more containers, one cell at a time, based upon the specific light scattering and fluorescent characteristics of each cell.
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