[Temporary organization of the processes of cell reproduction in the HeLa culture]

Rhythmical changes of the DNA--synthesizing and dividing cells have been identified in Hela cultures in the stationary phase of the growth. The periods of these changes were not equal to 24 hours. Synchronous quantitative changes of the DNA-synthesizing and dividing cells and the similarity in the length of their frequency periods were observed. The parameters of culture mitotic cycle: T--27--31 hr, tG2min--2hr, tG2+1/2M--4hr, ts--11 hr, tG1+1/2M--12--16 hr.