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Definition of Cell sorter, fluorescence-activated
Medically reviewed by Min Clinic Staff | Updated: January 2026
Cell sorter, fluorescence-activated: A flow cytometer (a scientific instrument used to measure the characteristics of individual cells) that is modified for the purpose of separating (sorting) cells based on the amount of light (fluorescence) emitted by each cell. The abbreviation for fluorescence-activated cell sorter is FACS (pronounced like "fax").