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Use of flow cytometry in the measurement of cell mitotic cycle.

Variations in many cellular characteristics during the cell cycle can be analyzed simply and directly by flow cytometry. Using multiparameter analysis of DNA content, RNA content, cell size and 5-bromodeoxyuridine (BrdUrd) incorporation, it is now possible to define cells' positions in the cell cycle with a precision previously unimaginable. It is also possible, by using the sorting function of the flow cytometer, to separate populations in different phases of the cell cycle for biological and biochemical studies. This review describes the technical aspects of flow cytometric instrumentation, DNA staining procedures, and the cytometric applications of both in cell cycle analysis including some of the more innovative, new approaches with antibody against BrdUrd.