This protocol describes the use of bromodeoxyuridine (BrdU) uptake to permit the temporal tracking of cells that were in S phase at a specific point in time. Addition of DNA dyes and antibody labeling facilitates detailed analysis of the fate of the S phase cells at later times.
Welschinger, R., Bendall, L. J. Temporal Tracking of Cell Cycle Progression Using Flow Cytometry without the Need for Synchronization. J. Vis. Exp. (102), e52840, doi:10.3791/52840 (2015).