Original sentence: Cells are nebulized and sent to  an argon plasma, ionizing the multi-atom metal tags, which are then analyzed by a time-of-flight mass spectrometer.In this approach, antibodies are tagged with isotopically pure rare earth elements and these are used to tag the components of cells.Mass cytometry is a mass spectrometry technique based on inductively coupled plasma mass spectrometry used for the determination of the properties of cells (cytometry).The approach overcomes limitations of spectral overlap that limit flow cytometry
Edited sentence: Hundreds of cells per second are passed through an argon plasma, ionizing the multi-atom metal tags, which are then analyzed by a time-of-flight mass spectrometer.It is an extension of flow cytometry in which antibodies are tagged with isotopically pure rare earth elements, rather than fluorophores, allowing simultaneous measurement of greater than 40 parameters while circumventing the issue of spectral overlap.Mass cytometry or CyTOF (DVS Sciences) is a single-cell multiparametric protein detection technology based on inductively coupled plasma mass spectrometry