Immunochemical quantitation of bromodeoxyuridine: application to cell-cycle kinetics.

We have described several laboratory procedures for the immunochemical staining of the halopyrimidines, BrdUrd and IdUrd, in cell suspensions for flow cytometry and a method for staining histological sections on slides. Halogenated pyrimidine quantitation allows cell-cycle parameters, including total cell-cycle time, phase durations, and growth fraction to be determined. We have presented some flow cytometric data to demonstrate the use of these methods in determining bivariate BrdUrd/DNA histograms with CHO cells and in kinetic studies with the brown Norway rat myeloid leukemia model.