satisfactory resolution of the flow cytometric detection of s-phase cells was indicated by a sorting experiment using an ortho ( system 50-h ) cell sorter which demonstrated that after [ 3h ] thymidine injection in vivo 88 % of the diploid and 84 % of the tetraploid s-phase nuclei were labelled , while labelling in the g1-fractions was only 2 and 7 % , respectively .
C0080129
s-phase
C0007610
nuclei