analysis of the cell cycle , during differentiation induced by me2so , using thymidine incorporation , thymidine labeling index , and relative dna content per cell as measured by flow microfluorometry , demonstrates a transient inhibition of entry of cells into s-phase of the cell cycle which is detected as early as 5 hr and is maximal about 20 hr after beginning of nonsynchronous cultures .
C0007589
differentiation
C0007634
cells